CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Ex 9(i)

Odisha State Board Elements of Mathematics Class 12 Solutions CHSE Odisha Chapter 9 Integration Ex 9(i) Textbook Exercise questions and Answers.

CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Exercise 9(i)

Evaluate the following Integrals.
Question 1.
I = \(\int_1^3\)5x2 dx
Solution:
Here a = 1, b = 3, f(x) = 5x2
⇒ nh = b – a = 3 – 1 = 2
CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Ex 9(i) Q.1

Question 2.
I = \(\int_{-1}^1\)ex dx
Solution:
Here a = -1, b = 1, f(x) = x, nh = b – a = 2
CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Ex 9(i) Q.2

CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Ex 9(i)

Question 3.
I = \(\int_0^6\)x dx
Solution:
Here a = 0, b = 6, f(x) =x, nh = b – a = b
CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Ex 9(i) Q.3

Question 4.
I = \(\int_0^4\)(x2 + 2x + 4) dx
Solution:
Here a = 0, b = 4, f(x) = x2 + 2x + 4 and nh = b – a = 4
CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Ex 9(i) Q.4

BSE Odisha 10th Class Life Science Important Questions Chapter 2 ଶ୍ବସନ

Odisha State Board BSE Odisha 10th Class Life Science Important Questions Chapter 2 ଶ୍ବସନ Important Questions and Answers.

BSE Odisha Class 10 Life Science Important Questions Chapter 2 ଶ୍ବସନ

Objective Type Questions with Answers 

A ଗୋଟିଏ ବାକ୍ୟରେ ଉତ୍ତର ଦିଅ

1. ‘ଶକ୍ତିକେନ୍ଦ୍ର’ ଓ ‘ଶକ୍ତିମୁଦ୍ରା’ କାହାକୁ କୁହାଯାଏ ?
ଉ-
ଜୀବକୋଷରେ ରହିଥ‌ିବା ମାଇଟୋକଣ୍ଡ୍ରି ଆକୁ ‘ଶକ୍ତିକେନ୍ଦ୍ର’ ଓ ATPକୁ ‘ଶକ୍ତିମୁଦ୍ରା’ କୁହାଯାଏ ।

2. ‘ଶକ୍ତିକେନ୍ଦ୍ର’ ଓ ATPକୁ ‘ଶକ୍ତିମୁଦ୍ରା’ କୁହାଯାଏ । ଗୋଟିଏ ATP ଅଣୁରୁ କେତେ ପରିମାଣର ଶକ୍ତି ମିଳେ ?
ଉ-
ଗୋଟିଏ ATP ଅଣୁ ଭାଙ୍ଗି ADP ଓ Pi ରେ ପରିଣତ ହେଲେ 30.5 କିଲୋ -ଜୁଲ ଶକ୍ତି ନିର୍ଗତ ହୁଏ ।

BSE Odisha 10th Class Life Science Important Questions Chapter 2 ଶ୍ବସନ

3. ଉଭିଦ ଓ ପ୍ରାଣୀଙ୍କ ଶ୍ଵାସକ୍ରିୟାରେ ଥ‌ିବା ପାର୍ଥକ୍ୟ ସମ୍ବନ୍ଧରେ ଲେଖ ।
ଉ-
ଉଭିଦ ଓ ପ୍ରାଣୀଙ୍କ ଶ୍ଵାସକ୍ରିୟାରେ ପାର୍ଥକ୍ୟ ହେଲା; ଉଦ୍ଭିଦରେ ଷ୍ଟୋମାଟା ଦେଇ ଅମ୍ଳଜାନ ଓ ଅଙ୍ଗାରକାମ୍ଳ ଗ୍ୟାସ୍ ବିନିମୟ ହୁଏ, କିନ୍ତୁ ବିଭିନ୍ନ ପ୍ରାଣୀ ଶରୀରରେ .ଏଥ‌ିପାଇଁ ଭିନ୍ନ ଭିନ୍ନ ଅଙ୍ଗ ରହିଛି ।

4. ମଣିଷର ଶ୍ବାସତନ୍ତ୍ରର ବିଭିନ୍ନ ଅଂଶର ନାମ ଲେଖ ।
ଉ-
ମନୁ ଷ୍ୟ ଶରୀରରେ ଥ‌ିବା ଶ୍ଵାସତନ୍ତ୍ରର ବିଭିନ୍ନ ଅଂଶଗୁଡ଼ିକର ନାମ ହେଉଛି-
ଅଂଶଗୁଡ଼ିକର ନାମ ହେଉଛି-

  • ନାସାରନ୍ଧ୍ର,
  • ନାସାପଥ,
  • ଗ୍ରସନୀ,
  • ଶ୍ଵାସନଳୀ,
  • ଶ୍ଵାସନଳିକା,
  • ଫୁସ୍‌ଫୁସ୍ ।

5. ନାସାରନ୍ଧ୍ରର ଗଠନ ସମ୍ବନ୍ଧରେ ଲେଖି ।
ଉ-
ପାଟି ଉପରେ ଶ୍ୱାସପଥର ଦ୍ଵାରଭାବେ ଦୁଇଟି ନାସାରନ୍ଧ୍ର (ନାକପୁଡ଼ା) ରହିଛି । ଏଥିରୁ ଶ୍ଵାସପର୍ଥ ଆରମ୍ଭ ହୁଏ । ନାକପୁଡ଼ା ଦୁଇଟିର ଅଗ ଉପାସ୍ଥି ଦ୍ବାରା ଗଠିତ ।

6. ନାସା-ଗ୍ରେସନୀ ଓ ମୁଖ-ଗ୍ର ସନୀ କାହାକୁ କୁହାଯାଏ ?
ଉ-
ନାସାପଥ ନିକଟରେ ଥ‌ିବା ଗ୍ରସନୀର ଅଂଶକୁ ନାସା – ଗ୍ରସନୀ ଓ ମୁଖଗହ୍ଵର ନିକଟରେ ଥ‌ିବା ଅଂଶକୁ ମୁଖ- ଗ୍ରସନୀ କୁହାଯାଏ ।

7. ଗ୍ଲଟିସ୍ ଓ ଗଲେଟ୍ କାହାକୁ କୁହାଯାଏ ?

ଗ୍ରସନୀର ଶେଷ ଭାଗରୁ ଖାଦ୍ୟନଳୀ ଓ ଶ୍ଵାସନଳୀ ଆରମ୍ଭ ହୋଇଥାଏ ଏବଂ ଶ୍ଵାସନଳୀର ଦ୍ବାରକୁ ଗ୍ଲଟିସ୍ ଓ ଖାଦ୍ୟନଳୀର ଦ୍ଵାରକୁ ଗଲେଟ୍ କୁହାଯାଏ ।

BSE Odisha 10th Class Life Science Important Questions Chapter 2 ଶ୍ବସନ 1ଲେଖ ।
ଉ-
ଶ୍ଵାସନଳୀର ଆରମ୍ଭରେ ସ୍ୱରପେଟିକା ରହିଥାଏ ଏବଂ ଏଥିରେ ଥିବା ସରୁ ସରୁ ସୂତାପରି ସ୍ୱରତନ୍ତ୍ରୀ ବା ଭୋକାଲ କର୍ଡ଼ର କମ୍ପନଦ୍ବାରା ଧ୍ଵନି ସୃଷ୍ଟି ହୁଏ ।

B ଗୋଟିଏ ଶବ୍ଦରେ ଉତ୍ତର ଦିଅ ।

1. କେଉଁ ଧମନୀଦ୍ଵାରା ହୃତ୍‌ପିଣ୍ଡରୁ CO2 ଯୁକ୍ତ ଫୁସ୍‌ଫୁସ୍‌ ଆସିଥାଏ ?
2. ଜୀବକୋଷରେ କାହାକୁ ଶକ୍ତିମୁଦ୍ରା କୁହାଯାଏ ?
3. ଜୈବିକ ଜାରଣ ପାଇଁ ଆବଶ୍ୟକ ବିପାଚକ କେଉଁ ଅଙ୍ଗିକାରେ ଥାଏ ?
4. ବେଙ୍ଗଫୁଲା ଓ ମାଛ କାହାଦ୍ଵାରା ଶ୍ଵାସକ୍ରିୟା କରନ୍ତି ?
5. ଶୀତସୁପ୍ତି ସମୟରେ ବେଙ୍ଗ କାହାଦ୍ଵାରା ଶ୍ଵାସକ୍ରିୟା କରେ ?
6. ଉଦ୍ଭଦର ଷ୍ଟୋମାଟା ଖୋଲିବା ଓ ବନ୍ଦ ହେବା କାହା ଉପରେ ନିର୍ଭର କରେ ?
7. ଜିଆ, ଜୋକ ଓ ବେଙ୍ଗ କେଉଁ ଅଙ୍ଗଦ୍ଵାରା ଶ୍ଵାସକ୍ରିୟା କରନ୍ତି ?
8. କଇଁଛ, କୁମ୍ଭୀର, ତିମି କାହାଦ୍ଵାରା ଶ୍ଵାସକ୍ରିୟା ସମ୍ପାଦନ କରନ୍ତି ?
9. ସାର ହାନ୍ସ କ୍ରେବସ୍‌ କେଉଁ ମସିହାରେ ନୋବେଲ ପୁରସ୍କାର ପାଇଥିଲେ ?
10. ବେଙ୍ଗ କାହାଦ୍ଵାରା ଶ୍ଵାସକ୍ରିୟା କରେ ?
11. ଜୀବ ଶରୀରରେ ହେଉଥ‌ିବା ଦହନ ପ୍ରକ୍ରିୟାକୁ କ’ଣ କୁହାଯାଏ ?
12. ଜୈବ ରାସାୟନିକ ପ୍ରକ୍ରିୟାରୁ ଉତ୍ପନ୍ନ ଶକ୍ତି କେଉଁ ଅଣୁରେ ବାନ୍ଧିହୋଇ ରହେ ?
13. ଜୀବକୋଷରେ କେଉଁ ଅଙ୍ଗିକା ଶକ୍ତିକେନ୍ଦ୍ର ରୂପେ କରେ ?
14. ମନୁଷ୍ୟ ଶ୍ଵାସପଥର ପ୍ରଥମ ଭାଗକୁ କ’ଣ କୁହାଯାଏ ?
15. ବକ୍ଷଗହ୍ଵର ମଧ୍ୟରେ ମନୁଷ୍ୟ ଶରୀରରେ କେତୋଟି ଫୁସ୍‌ଫୁସ୍ ଥାଏ ?
16. ଶ୍ଵାସନରେ ଉତ୍ପନ୍ନ ଶକ୍ତି କ’ଣ ଗଠନରେ ବ୍ୟବହୃତ ??

BSE Odisha 10th Class Life Science Important Questions Chapter 2 ଶ୍ବସନ 2

C. ଶୂନ୍ୟସ୍ଥାନ ପୂରଣ କର ।

1. ଜୀବକୋଷରେ ଖାଦ୍ୟର ଜାରିତ ହୋଇ ସେଥୁ ………………….. ନିର୍ଗତ ହୁଏ ।
2. ଯେଉଁ ପ୍ରଣାଳୀରେ ଖାଦ୍ୟରୁ ଶକ୍ତି ନିର୍ଗତ ହୁଏ ତାହାକୁ ………………….. କୁହାଯାଏ ।
3. ଶ୍ୱସନ ଏକ ………………….. ପ୍ରକ୍ରିୟା ଅଟେ ।
4. ଅମ୍ଳଜାନର ଉପସ୍ଥିତିରେ ହେଉଥ‌ିବା ଶ୍ଵାସନକୁ ………………….. କୁହାଯାଏ ।
5. ଅମ୍ଳଜାନର ଅନୁପସ୍ଥିତିରେ ହେଉଥ‌ିବା ଶ୍ବସନକୁ କୁହାଯାଏ । ………………….. ସମ୍ପାଦିତ ହୁଏ ।
6. ଗ୍ଲାଇକୋଲି ସିସ୍ ଜୀବକୋଷର …………………. ଠାରେ ସମ୍ପାଦିତ ହୁଏ ।
7. କ୍ରେବସ୍ ଚକ୍ର ଜୀବକୋଷର ଜାଚକ୍ରେ।ସେର …………………. ଠାରେ ସମ୍ପାଦିତ ହୁଏ ।
8. କ୍ରେ ବସ୍ ଚକ୍ର ………………….. ମାସଦ୍ଵାରେ ଅଲିଫୁବା ହୋଇଥିଲା ।
9. ଷ୍ଟୋମାଟୋ ଖୋଲିବା ଓ ବନ୍ଦ ହେବା ………………….. ନିର୍ଭରଶୀଳ ।
10. ହାଇଡ୍ରାଜାତୀୟ ପ୍ରାଣୀ …………………. କରେ ।
13. ଅସରପା …………………. ଦ୍ଵାରା ଶ୍ଵାସକ୍ରିୟା କରେ ।
14. ଚିଙ୍ଗୁଡ଼ି ……………………… ଦ୍ଵାରା ଶ୍ଵାସକ୍ରିୟା କରେ ।
15. ପାରା …………………… ଦ୍ଵାରା ଶ୍ଵାସକ୍ରିୟା କରେ ।
16. ATP କୁ …………………… କୁହାଯାଏ ।
17. ମାଇଟୋକଣ୍ଡ୍ରିଆକୁ ……………… କୁହାଯାଏ ।
18. ଗୋଟିଏ ATP ଅଣୁରୁ ……………………. KJ ଶକ୍ତି ନିର୍ଗତ ହୁଏ ।
19. ନାକପୁଡ଼ା 2ଟିର ଅଗ …………………… ଦ୍ଵାରା ଗଠିତ ।
21. ପାଟି ଉପରେ ଶ୍ୱାସପଥର ଦ୍ଵାର ଭାବେ ଦୁଇଟି – ………………….. ରହିଛି ।
22. ନାସାପଥଦେଇ ବାୟୁ ଗଲାବେଳେ ଧୂଳିକଣା ଓ ଜୀବାଣୁ ରେ ଲାଗିଯାଆନ୍ତି ।
23. ନାସାପଥ ନିକଟରେ ଥ‌ିବା ଗ୍ରସନୀର ଅଂଶକୁ ………………………. କୁହାଯାଏ ।
24. ଗ୍ରସନୀର ପଛକାନ୍ଥରେ ଏକ ଯୋଡ଼ା ……………………… ରହିଛି ।
25. ଶ୍ଵାସନଳୀର ଦ୍ବାରକୁ ………………………. କୁହାଯାଏ ।
26. ଖାଦ୍ୟନଳୀର ଦ୍ବାରକୁ ……………………… କୁହାଯାଏ ।
27. ଶ୍ଵାସନଳୀର ଦ୍ଵାର ………………………. ନାମକ ଏକ ପରଦାଦ୍ଵାରା ବନ୍ଦ ରହେ ।
28. ଶ୍ଵାସନଳୀର ଆରମ୍ଭରେ ………………… ରହିଥାଏ ।
29. ସ୍ଵର ପେଟିକାରେ ………………………. ରାଳମନଦ୍ଵାରା ଶ୍ୱାନି ସୃଷ୍ଟିହୁଏ ।
Answer:
1. ଶକ୍ତି
2. ଶ୍ବସନ
3. ଅପଚୟ
4. ବାୟୁ ଉପଜୀବୀ ଶ୍ଵାସନ
5. ବାୟୁ ଅପଜୀବୀ ଶ୍ୱସନ
6. କୋଷଜୀବକ
7. ମାଇଟୋକଣ୍ଡ୍ରିଆ
8. 1953
୨. ଆଲୋକ ଓ ତାପମାତ୍ରା
10. ବିସରଣ
11. ?
12. ?
13. ଶ୍ଵାସରନ୍ଧ୍ର
14. ଗାଲି
15. ଫୁସ୍‌ଫୁସ୍
16. ଶକ୍ତିମୁଦ୍ରା
17. ଶକ୍ତିକେନ୍ଦ୍ର
19. ଉପାସ୍ଥି
18. 30.5
21. ନାସାରନ୍ଧ୍ର
22. ଶ୍ଳେଷ୍ମକ ଝିଲ୍ଲୀ
23. ନାସା ଗ୍ରସନୀ
24. ଟନ୍‌ସିଲ୍
25. ଗ୍ଲଟିସ୍
26. ଗଲେଟ୍
27. ଅଧ୍ହ୍ବା
28. ସ୍ୱରପେଟିକା
29. ଭୋକାଲ୍ କର୍ଡ଼

BSE Odisha 10th Class Life Science Important Questions Chapter 2 ଶ୍ବସନ

D ଠିକ୍ ଉକ୍ତି ପାଇଁ (√ ) ଓ ଭୁଲ୍ ଭକ୍ତି ପାଇଁ (X) ଚିହ୍ନ ଦିଅ ।

1. ଅମ୍ଳଜାନର ଅନୁପସ୍ଥିତିରେ ଶ୍ୱସନ ପ୍ରକ୍ରିୟା ସମ୍ଭବ ନୁହେଁ ।
2. ବେଳେବେଳେ ପେଶୀକୋଷରେ ଅମ୍ଳଜାନ ଅଭାବରେ ପାଇରୁଭେଟ୍ ଅଣୁ ଭାଙ୍ଗି ତିନି ଅଙ୍ଗାରକ ବିଶିଷ୍ଟ ଲାକୁ କ୍ ଅମ୍ଳରେ ପରିଣତ ହୁଏ ।
3. ବାୟୁ ଉପଜୀବୀ ଶ୍ଵାସନରେ ମାଇଟୋକଣ୍ଡ୍ରି ଆରେ ଅନେକ ପ୍ରକାର ଏନ୍‌ଜାଇମ୍ ଓ କୋଏନ୍‌ଜାଇମ୍ ଥିବା ଯୋଗୁଁ ପାଇରୁଭେଟ୍‌ ସାଇଟ୍ରିକ୍ ଅମ୍ଳ ଓ ପରେ ପରେ ବିଭିନ୍ନ ଅମ୍ଳ ଚକ୍ରାକାରରେ ସୃଷ୍ଟି ହୁଏ ।
4. ଛିଦ୍ରାଳ ଓ ହାଇଡ୍ରାଜାତୀୟ ପ୍ରାଣୀଙ୍କର ସ୍ଵତନ୍ତ୍ର ଶ୍ୱସନ ଅଙ୍ଗ ଥାଏ ।
5. ପ୍ରଶ୍ଵାସ ଏକ ଶିଳନ ପ୍ରକ୍ରିୟା ।
6. ମନୁଷ୍ୟର ପାଟି ଉପରେ ଶ୍ଵାସପଥର ଦ୍ଵାରଭାବେ ନାସାରନ୍ଧ୍ର ରହିଥାଏ ।
7. BSE Odisha 10th Class Life Science Important Questions Chapter 2 ଶ୍ବସନ 14 ଗ୍ରସନୀ କୁହାଯାଏ ।
8. ଶ୍ଵାସନଳୀର ଦ୍ବାରକୁ ଗଲେଟ୍ କୁହାଯାଏ ।
9. ଶ୍ଵାସନଳୀର ଦ୍ବାର ଅଧ୍ୱଜିହ୍ଵା ନାମକ ଏକ ପରଦାଦ୍ୱାରା ବନ୍ଦ ରୁହେ । ରନ୍ଦ କୁ6ହ।
10. ମନୁଷ୍ୟ ଶ୍ଵାସକ୍ରିୟା 3 ପର୍ଯ୍ୟାୟ ବିଶିଷ୍ଟ ଅଟେ ।
11. ଜଣେ ସୁସ୍ଥ ବ୍ୟକ୍ତିର ପ୍ରଶ୍ଵାସ ଓ ନିଃଶ୍ଵାସ ହାର ମିନିଟ୍‌କୁ
10. BSE Odisha 10th Class Life Science Important Questions Chapter 2 ଶ୍ବସନ 15 12 ଥର ।
12. ସଂବାତନ 4 ପର୍ଯ୍ୟାୟ ବିଶିଷ୍ଟ ଘଟଣା ଅଟେ ।
13. ଅଧ୍ୱଜିହ୍ଵା ଥିବାରୁ ଖାଦ୍ୟ ଶ୍ଵାସନଳୀ ମଧ୍ୟରେ ପ୍ରବେଶ କରିପାରେ ନାହିଁ ।
14. ଗ୍ରସନୀର ଶେଷ ଭାଗରେ ଥ‌ିବା ଖାଦ୍ୟନଳୀ ଦ୍ଵାରକୁ ଗଲେଟ୍ କୁହାଯାଏ ।
15. ମୁଖଗହ୍ଵର ନିକଟରେ ଥ‌ିବା ଗ୍ରସନୀର ଅଂଶକୁ ମୁଖଗ୍ରସନୀ କୁହାଯାଏ ।
16. ନାକପୁଡ଼ା ଦୁଇଟିର ଅଗ ତରୁଣାସ୍ଥିଦ୍ୱାରା ଗଠିତ ହୋଇଥାଏ ।
17. ବିସରଣ ଶ୍ଵାସନର ପର୍ଯ୍ୟାୟ ନୁହେଁ ।
18. ଏକ ବାୟୁ ଅପଜୀବୀ ଶ୍ଵାସନରେ 16ଟି ATP ଉତ୍ପନ୍ନ ହେଲେ ୫ଟି ଗ୍ଲା କୋଜ ଭାଙ୍ଗିଥାଏ । କ୍ରି
19.BSE Odisha 10th Class Life Science Important Questions Chapter 2 ଶ୍ବସନ 4
20. ତିମି ଫୁସ୍‌ଫୁସ୍ ଦ୍ୱାରା ଶ୍ଵାସକ୍ରିୟା କରେ ।
21. ଧାନ ଉଭିଦର ପତ୍ରର ଉଭୟ ପୃଷ୍ଠରେ ଷ୍ଟୋମାଟା ଥାଏ ।
22. ପ୍ରଶ୍ଵାସ ସମୟରେ ବକ୍ଷଗହ୍ବରର ଆୟତନ 60% ବୃଦ୍ଧିପାଏ ।
23. ଫୁସ୍‌ଫୁସ୍ ଚାରିପଟେ ଫୁସ୍‌ଫୁସ୍ ଧମନୀ ରହିଥାଏ ।
24. ବ୍ରୋନ୍‌ କଲ୍ ଶାଖାପ୍ରଶାଖାରେ ବିଭକ୍ତ ହୋଇ ଶୂନ୍ୟସ୍ଥାନ ପୂରଣ କର ।
Answer:
1. (x)
2. (√)
3.(√)
4.(×)
5. (x)
6. (√)
7. (×)
8.(×)
9.(√)
10. (√)
11. (×)
12. (×)
13. (√)
14. (√)
15. (√)
16. (×)
17. (√)
18. (√)
19. (√)
20. (√)
21. (√)
22. (×)
23. (×)
24. (√)

E ‘କ’ ସ୍ତମ୍ଭରେ ପ୍ରଥମ ଯୋଡାର ସମ୍ପର୍କକୁ ଲକ୍ଷ୍ୟକରି ‘ଖ’ ସ୍ତମ୍ଭରେ ଦ୍ବିତୀୟଟିରେ ଶୂନ୍ୟସ୍ଥାନ ପୂରଣ କର ।

‘କ’ ସ୍ତମ୍ଭ – ‘ଖ’ ସ୍ତମ୍
ଇଷ୍ଟ : ସୁରାସାର କିଣ୍ବନ ଶ୍ଵାସନଳୀ ଦ୍ଵାର :
ମାଛ : ଗାଲି ପେଶୀ :
ଖାଦ୍ୟନଳୀର ଦ୍ଵାର : ଗଲେଟ୍ ସାପ :
ସ୍ୱରପେଟିକା : ସ୍ଵର ନିୟନ୍ତ୍ରଣ ଅଧ୍ୱଜିହ୍ଵା :
ଶକ୍ତିକେନ୍ଦ୍ର : ମାଇଟୋକଣ୍ଡ୍ରିଆ ଶକ୍ତିମୁଦ୍ରା :

Answer:

ଉ ‘କ’ ସ୍ତମ୍ଭ ‘ଖ’ ସ୍ତମ୍
ଖାଦ୍ୟନଳୀର ଦ୍ଵାର : ଗଲେଟ୍‌ ଶ୍ଵାସନଳୀ ଦ୍ଵାର : ଗ୍ଲଟିସ୍
ଇଷ୍ଟ : ସୁରାସାର କିଣ୍ବନ ପେଶୀ : ଲାକ୍‌ଟିକ୍ ଅମ୍ଳ କିଣ୍ବନ
ମାଛ ଗାଲି ସାପ : ଫୁସ୍‌ଫୁସ୍‌
ସ୍ୱରପେଟିକା : ସ୍ଵର ନିୟନ୍ତ୍ରଣ ଅଧ୍ୱଜିହ୍ଵା : ଖାଦ୍ୟ ନିୟନ୍ତ୍ରଣ
ଶକ୍ତିକେନ୍ଦ୍ର : ମାଇଟୋକଣ୍ଡ୍ରିଆ ଶକ୍ତିମୁଦ୍ରା : ATP

2.

‘କ’ ସ୍ତମ୍ଭ ‘ଖ’ ସ୍ତମ୍
ବକ୍ଷଗହ୍ଵର ଆଗପଟ : ଷ୍ଟରନମ୍ ପଛପଟ :
ବିଶୁଦ୍ଧ ରକ୍ତ : ଦୂଷିତ ରକ୍ତ ଫୁସ୍‌ଫୁସ ଶିରା :
ପ୍ରଶ୍ଵାସ : ନିଃଶ୍ବାସ ସକ୍ରିୟ :
ଜୋକ : ବୁଢ଼ୀଆଣୀ ଚର୍ମ :
ଲାକଟିକ୍ ଅମ୍ଳ : ସୁରାସାର : 3C:

Answer:

‘କ’ ସ୍ତମ୍ଭ ‘ଖ’ ସ୍ତମ୍
ବକ୍ଷଗହ୍ଵର ଆଗପଟ : ଷ୍ଟରନମ୍ ପଛପଟ : ମେରୁଦଣ୍ଡ
ବିଶୁଦ୍ଧ ରକ୍ତ : ଦୂଷିତ ରକ୍ତ ଫୁସ୍‌ଫୁସ ଶିରା : ଫୁସ୍‌ଫୁସ୍ ଧମନୀ
ପ୍ରଶ୍ଵାସ : ନିଃଶ୍ବାସ ସକ୍ରିୟ : ନିଷ୍କ୍ରିୟ
ଜୋକ : ବୁଢ଼ୀଆଣୀ ଚର୍ମ : ଶ୍ଵାସରନ୍ଧ୍ର
ଲାକଟିକ୍ ଅମ୍ଳ : ସୁରାସାର 3C : 2C

Multiple Choice Questions (Mcqs) With Answers

1. ନିମ୍ନୋକ୍ତ କାହାଦ୍ଵାରା ହୃତ୍‌ପିଣ୍ଡରୁ CO<sub>2</sub> ଯୁକ୍ତ ରକ୍ତ ଫୁସ୍‌ଫୁସ୍‌ ଆସିଥାଏ ?
(A) ଫୁସ୍‌ଫୁସ୍ ଶିରା
(B) ଫୁସ୍‌ଫୁସ୍ ଧମନୀ
(C) ଊର୍ଦ୍ଧ୍ଵ ମହାଶିରା
(D) ନିମ୍ନ ମହାଶିରା
Answer:
(B) ଫୁସ୍‌ଫୁସ୍ ଧମନୀ

2. ଗ୍ରସନୀର ପଛ କାନ୍ଥରେ ଏକଯୋଡ଼ା କ’ଣ ରହିଥାଏ ?
(A) ଟନ୍‌ସିଲ୍
(B) ଗ୍ଲଟିସ୍
(C) ଗଲେଟ୍
(D) ଅଧ୍ୱଜିହ୍ଵା
Answer:
(A) ଟନ୍‌ସିଲ୍

3. ବେଙ୍ଗଫୁଲା କାହା ସାହାଯ୍ୟରେ ଶ୍ଵାସକ୍ରିୟା କରେ ?
(A) ନାସାରନ୍ଧ୍ର
(B) ନାସାପଥ
(C) ଗାଲି
(D) ପୁପ୍ ଫୁ ପ୍
Answer:
(C) ଗାଲି

4. ଜୀବକୋଷରେ ନିମ୍ନୋକ୍ତ କାହାକୁ ଶକ୍ତ ମୁଦ୍ର କୁହାଯାଏ ?
(A) ATP
(B) ADP
(C) RNA
(D) DNA
Answer:
(A) ATP

5. ଜୈବିକ ଜାରଣ ପାଇଁ ଆବଶ୍ୟକ ବିପାଚକ କେଉଁ ଅଙ୍ଗିକାରେ ଥାଏ ?
(A) ଲବକ
(B) ରସଧାନୀ
(C) ରାଇବୋଜାମ୍
(D) ମାଇଟୋକଣ୍ଡ୍ରିଆ
Answer:
(D) ମାଇଟୋକଣ୍ଡ୍ରିଆ

6. ବେଙ୍ଗଫୁଲା ଓ ମାଛ କାହାଦ୍ଵାରା ଶ୍ଵାସକ୍ରିୟା କରନ୍ତି ?
(A) ଚର୍ମ
(C) ଶ୍ଵାସରନ୍ଧ୍ର
(B) ଗାଲି
(D) ଫୁସ୍‌ଫୁସ୍
Answer:
(B) ଗାଲି

BSE Odisha 10th Class Life Science Important Questions Chapter 2 ଶ୍ବସନ

7. ଶୀତସୁପ୍ତି ସମୟରେ ବେଙ୍ଗ କାହାଦ୍ଵାରା ଶ୍ଵାସକ୍ରିୟା କରେ ?
(A) ଚର୍ମ
(B) ଫୁସ୍‌ଫୁସ୍
(C) ଗାଲି
(D) ଶ୍ଵାସରନ୍ଧ୍ର
Answer:
(A) ଚର୍ମ

8. ଉଭିଦର ଷ୍ଟୋମାଟା ଖୋଲିବା ଓ ବନ୍ଦହେବା ନିମ୍ନୋକ୍ତ କାହା ଉପରେ ନିର୍ଭର କରେ ?
(A) ଅମ୍ଳଜାନ
(B) ଆଲୋକ
(C) ତାପମାତ୍ରା
(D) ଆଲୋକ ଓ ତାପମାତ୍ରା
Answer:
(D) ଆଲୋକ ଓ ତାପମାତ୍ରା

9. ଜିଆ, ଜୋକ୍ ଓ ବେଙ୍ଗ କେଉଁ ଅଙ୍ଗଦ୍ଵାରା ଶ୍ଵାସକ୍ରିୟା କରନ୍ତି ?
(A) ଗାଲି
(B) ଚର୍ମ
(C) ଫୁସ୍‌ଫୁସ୍
(D) ଶ୍ଵାସରନ୍ଧ୍ର
Answer:
(B) ଚର୍ମ

10. କଇଁଛ, କୁମ୍ଭୀର ଓ ତିମି କାହାଦ୍ଵାରା ଶ୍ଵାସକ୍ରିୟା ସମ୍ପାଦନ
(A) ଗାଲି
(B) ଚର୍ମ
(C) ଫୁସ୍‌ଫୁସ୍
(D) ଶ୍ବାସରନ୍ଧ୍ର
Answer:
(C) ଫୁସ୍‌ଫୁସ୍

11. ସାର ହାନ୍ସ କ୍ରେବସ୍ କେଉଁ ମସିହାରେ ନୋବେଲ ପୁରସ୍କାର ପାଇଥିଲେ ?
(A) 1950
(B) 1952
(C) 1953
(D) 1950
Answer:
(C) 1953

12. ନିମ୍ନୋକ୍ତ କେଉଁଟି କ୍ରେବସ୍ ଚକ୍ରର ଅନ୍ୟ ନାମ ଅଟେ ?
(A) ସାଇଟ୍ରିକ୍ ଅମ୍ଳଚକ୍ର
(B) ଫରମିକ୍ ଅମ୍ଳ ଚକ୍ର
(C) ଲାକ୍‌ଟିକ୍ ଅମ୍ଳ ଚକ୍ର
(D) ଏସିଟିକ୍ ଅମ୍ଳ ଚକ୍ର
Answer:
(A) ସାଇଟ୍ରିକ୍ ଅମ୍ଳଚକ୍ର

13. କେଉଁଟି ଉଭିଦ କୋଷ ମଧ୍ୟକୁ ଗ୍ୟାସ୍ ଓ ଜଳୀୟବାଷ୍ପ ଯିବା ଆସିବା ପାଇଁ ଦ୍ଵାର ସଦୃଶ କାର୍ଯ୍ୟ କରେ ?
(A) ଗ୍ରସନୀ
(B) ଗ୍ରହଣୀ
(C) ଷ୍ଟେମାଟା
(D) ଲବକ
Answer:
(C) ଷ୍ଟେମାଟା

14. ବେଙ୍ଗ ନିମ୍ନୋକ୍ତ କାହାଦ୍ଵାରା ଶ୍ଵାସକ୍ରିୟା କରେ ?
(A) ଶ୍ଵାସରନ୍ଧ୍ର
(B) ଗାଲି
(C) ମୁଖଗହ୍ଵର
(D) ମୁଖଗହ୍ଵର ଓ ଫୁସ୍‌ଫୁସ୍
Answer:
(D) ମୁଖଗହ୍ଵର ଓ ଫୁସ୍‌ଫୁସ୍

15. ଜୀବ ଶରୀରରେ ଦହନ ପ୍ରକ୍ରିୟାକୁ କେଉଁ ପ୍ରକ୍ରିୟା କୁହାଯାଏ ?
(A) କାରଣ
(B) ଜୈବିକ ଜାରଣ
(C) ଅଜୈବିକ ଜାରଣ
(D) ସ୍ବତଃ ଜାରଣ
Answer:
(B) ଜୈବିକ ଜାରଣ

16. ଜୈବ ରାସାୟନିକ ପ୍ରକ୍ରିୟାରୁ ଉତ୍ପନ୍ନ ଶକ୍ତି କେଉଁ ଅଣୁରେ ବାନ୍ଧିହୋଇ ରହେ ?
(A) RNA
(B) DNA
(D) HIV
(C) ATP
Answer:
(C) ATP

17. ଜୀବକୋଷରେ କେଉଁ ଅଙ୍ଗିକା ଶକ୍ତିକେନ୍ଦ୍ର ରୂପେ କାର୍ଯ୍ୟ କରେ ?
(A) ଲବକ
(B) ରସଧାନୀ
(C) ମାଇଟୋକଣ୍ଡ୍ରିଆ
(D) ଗୁଣସୂତ୍ର
Answer:
(C) ମାଇଟୋକଣ୍ଡ୍ରିଆ

18. ମନୁଷ୍ୟ ଶ୍ଵାସପଥର ପ୍ରଥମ ଭାଗକୁ କ’ଣ କୁହାଯାଏ ?
(A) ନାସାରନ୍ଧ୍ର
(C) ଗ୍ରସନୀ
(B) ନାସାପଥ
(D) ଶ୍ଵାସନଳୀ
Answer:
(B) ନାସାପଥ

19. ଶ୍ଵାସନଳୀର ଆରମ୍ଭରେ କ’ଣ ରହିଥାଏ ?
(A) ନାସାରନ୍ଧ୍ର
(B) ସ୍ୱରପେଟିକା
(C) ନାସାପଥ
(D) ଗ୍ରସନୀ
Answer:
(B) ସ୍ୱରପେଟିକା

20. ବକ୍ଷଗହ୍ଵର ମଧ୍ୟରେ ମନୁଷ୍ୟ ଶରୀରରେ କେତୋଟି ଫୁସ୍‌ଫୁସ୍ ଥାଏ ?
(A) 1
(C) 3
(B) 2
(D) 4
Answer:
(B) 2

BSE Odisha 10th Class Life Science Important Questions Chapter 2 ଶ୍ବସନ

21. ଶ୍ଵାସନରେ ଉତ୍ପନ୍ନ ଶକ୍ତି କ’ଣ ଗଠନରେ ବ୍ୟବହୃତ ହୁଏ ?
(A) RNA
(B) DNA
(C) ATP
(D) ADP
Answer:
(C) ATP

22. ମନୁଷ୍ୟର ପାଟି ଉପରେ ଶ୍ୱାସପଥର ଦ୍ବାରଭାବେ କେଉଁ ଅଙ୍ଗ ରହିଥାଏ ?
(A) ନାସାରନ୍ଧ୍ର
(B) ନାସାପଥ
(C) ଗ୍ରସନୀ
(D) ସ୍ୱରପେଟିକା
Answer:
(A) ନାସାରନ୍ଧ୍ର

23. ନାସାପଥ ନିକଟରେ ଥ‌ିବା ଗ୍ରସନୀର ଅଂଶକୁ କ’ଣ କୁହାଯାଏ ?
(A) ମୁଖ ଗ୍ରସନୀ
(B) ନାସାଗ୍ରସନୀ
(C) ଟସିଲ୍
(D) ଗଲେଟ
Answer:
(B) ନାସାଗ୍ରସନୀ

24. ଶ୍ଵାସନଳୀର ଦ୍ଵାରକୁ କ’ଣ କୁହାଯାଏ ?
(A) ଗ୍ଲଟିସ୍
(B) ଗେଟ୍
(C) ଟନ୍‌ସିଲ୍
(D) ଗ୍ରସନୀ
Answer:
(A) ଗ୍ଲଟିସ୍

25. ଶ୍ଵାସନଳୀର ଦ୍ଵାର କେଉଁ ପରଦାଦ୍ଵାରା ବନ୍ଦ ରୁହେ ?
(A) ଅଧ୍ୱଜିହ୍ବା
(B) ଜିହ୍ବା
(C) ଗ୍ଲଟିସ୍
(D) ଗଲେଟ୍
Answer:
(A) ଅଧ୍ୱଜିହ୍ବା

26. ମନୁଷ୍ୟ ଶ୍ଵାସକ୍ରିୟା କେତେ ପର୍ଯ୍ୟାୟ ବିଶିଷ୍ଟ ଅଟେ ?
(A) 1
(C) 3
(B) 2
(D) 4
Answer:
(C) 3

27. ଜଣେ ସୁସ୍ଥ ବ୍ୟକ୍ତିରେ ପ୍ରଶ୍ଵାସ ଓ ନିଃଶ୍ଵାସ ହାର ମିନିଟ୍‌କୁ କେତେ ଥର ?
(A) 10-12
(B) 15-20
(C) 20-25
(D) 25-30
Answer:
(B) 15-20

28. ସଂବାତନ କେତେ ପର୍ଯ୍ୟାୟ ବିଶିଷ୍ଟ ଘଟଣା ଅଟେ ?
(A) 1
(B) 2
(C) 3
(D) 4
Answer:
(B) 2

29. ନିମ୍ନୋକ୍ତ କାହାଯୋଗୁଁ ଖାଦ୍ୟ ଶ୍ଵାସନଳୀ ମଧ୍ଯରେ ପ୍ରବେଶ କରିପାରେ ନାହିଁ ?
(A) ଅଧ୍ୱଜିହ୍ବା
(B) ଜିହ୍ବା
(C) ଗ୍ଲଟିସ୍
(D) ଗଲେଟ୍
Answer:
(A) ଅଧ୍ୱଜିହ୍ବା

30. ଗ୍ରସନୀର ଶେଷ ଭାଗରେ ଥ‌ିବା ଖାଦ୍ୟନଳୀ ଦ୍ଵାରକୁ କ’ଣ କୁହାଯାଏ ?
(A) ଗ୍ଲଟିସ୍
(B) ଗଲେଟ୍
(C) ଟସିଲ୍
(D) ଅଧ୍ଵଜହ୍ବା
Answer:
(B) ଗଲେଟ୍

31. ମଣିଷର ଶ୍ଵାସତନ୍ତ୍ର ସମ୍ପର୍କିତ ନିମ୍ନୋକ୍ତ କେଉଁ ଉକ୍ତିଟି ଠିକ୍ ଅଟେ ?
(A) ଶ୍ଵାସପଥର ଦ୍ଵାର ଭାଗରେ ଗୋଟିଏ ନାସାରନ୍ଧ୍ର ଅଛି ।
(B) ନାକପୁଡ଼ା ଦୁଇଟିର ଅଗ ଅସ୍ଥି ଦ୍ବାରା ଗଠିତ ।
(C) ଶ୍ଵାସପଥର ଦ୍ବିତୀୟଭାଗ ନାସାପଥ ଅଟେ ।
(D) ଗ୍ରସନୀ ଏକ ପେଶୀବହୁଳ ନଳୀ ଅଟେ ।
Answer:
(D) ଗ୍ରସନୀ ଏକ ପେଶୀବହୁଳ ନଳୀ ଅଟେ ।

32. ବିଭିନ୍ନ ପ୍ରାଣୀମାନଙ୍କ ଶ୍ଵାସକ୍ରିୟା ସମ୍ପର୍କିତ ନିମ୍ନୋକ୍ତ କେଉଁ ଉକ୍ତିଟି ଠିକ୍ ନୁହେଁ ?
(A) ହାଇଡ୍ରା ବିସରଣ ପ୍ରକ୍ରିୟାରେ ଦ୍ରବୀଭୂତ ଅମ୍ଳଜାନ ଗ୍ରହଣ କରେ ।
(B) ଜୋକ ଚର୍ମଦ୍ଵାରା ଶ୍ଵାସକ୍ରିୟା କରେ ।
(C) ବେଙ୍ଗ କେବଳ ଫୁସଫୁସ୍ ଦ୍ୱାରା ଶ୍ଵାସକ୍ରିୟା କରେ ।
(D) ଅସରପା ଶ୍ଵାସରନ୍ଧ୍ର ଦ୍ଵାରା ଶ୍ଵାସକ୍ରିୟା କରେ ।
Answer:
(C) ବେଙ୍ଗ କେବଳ ଫୁସଫୁସ୍ ଦ୍ୱାରା ଶ୍ଵାସକ୍ରିୟା କରେ ।

BSE Odisha 10th Class Life Science Important Questions Chapter 2 ଶ୍ବସନ

33. ନିମ୍ନୋକ୍ତ କେଉଁ ଉକ୍ତିଟି ଶ୍ଵାସନର ବିଶେଷତ୍ଵ ନୁହେଁ ?
(A) ଗ୍ଲାଇକୋଲିସିସ୍ କୋଷ ଜୀବକରେ ସମ୍ପାଦିତ ହୁଏ ।
(B) ଅପଜୀବୀ ଶ୍ଵାସନରେ ଗୋଟିଏ ପାଇରୁଭେଟ ହୁଏ ।
(C) ବାୟୁ ଅପଜୀବୀ ଶ୍ୱସନକୁ ସୁରାସାର କିଣ୍ବନ ମଧ୍ୟ
(D) ଉପଜୀବୀ ଶ୍ଵାସନରେ 38 ଟି ଓ ଅପଜୀବୀ ଶ୍ଵସନରେ 2 ଟି ATP ଅଣୁ ସୃଷ୍ଟି ହୁଏ ।
Answer:
(B) ଅପଜୀବୀ ଶ୍ଵାସନରେ ଗୋଟିଏ ପାଇରୁଭେଟ ହୁଏ ।

34. ନିମ୍ନୋକ୍ତ କେଉଁ ତଥ୍ୟଟି ବାୟୁ ଅପଜୀବୀ ଶ୍ଵାସନ ସମ୍ପର୍କିତ ସଠିକ୍ ଉକ୍ତି ନୁହେଁ ?
(A) ଏଥ‌ିପାଇଁ CO2 ଆବଶ୍ୟକ
(B) ଏଥୁରୁ 2 ଟି ATP ଅଣୁ ଉତ୍ପନ୍ନ ହୁଏ
(C) ଏଥିରେ ଇଥାନଲ ଓ ସୁରାସାର ସୃଷ୍ଟି ହୁଏ
(D) ଏଥିରେ ଗ୍ଲା କୋଜର ଅସଂପୂର୍ଣ୍ଣ ଜାରଣ ହୁଏ
Answer:
(A) ଏଥ‌ିପାଇଁ CO2 ଆବଶ୍ୟକ

35. ନିମ୍ନୋକ୍ତ କେଉଁ ତଥ୍ୟଟି ବାୟୁ ଉପଜୀବୀ ଶ୍ବସନ ସମ୍ପର୍କିତ ସଠିକ୍ ଉକ୍ତି ନୁହେଁ ?
(A) ଏଥିପାଇଁ O2 ଆବଶ୍ୟକ
(B) ଏଥରୁ 38 ଟି ATP ଅଣୁ ଉତ୍ପନ୍ନ ହୁଏ
(C) ଏଥିରେ CO2 + ଜଳ ମୁକ୍ତ ହୁଏ
(D) ଏଥିରେ ଗ୍ଲୁକୋଜର ଅସଂପୂର୍ଣ ଜାରଣ ହୁଏ
Answer:
(D) ଏଥିରେ ଗ୍ଲୁକୋଜର ଅସଂପୂର୍ଣ ଜାରଣ ହୁଏ

36. କେଉଁଟି ବାୟୁ ଉପଜୀବୀ ଶ୍ୱସନ ପ୍ରକ୍ରିୟାର ରାସାୟନିକ ସମୀକରଣ ଅଟେ ?

Answer:
BSE Odisha 10th Class Life Science Important Questions Chapter 2 ଶ୍ବସନ 7

37. କେଉଁଟି ବାୟୁ ଅପଜୀବୀ ଶ୍ଵାସନରେ ଇଷ୍ଟରେ ଶର୍କରାର ଅନ୍ତିମ ପରିଣତି ଅଟେ ?
(A) ଲାକ୍‌ଟିକ୍ ଅମ୍ଳ + CO2 + ଶକ୍ତି
(B) ଇଥାନଲ୍ + CO2 + ଶକ୍ତି
(C) ଲାକ୍‌ଟିକ୍ ଅମ୍ଳ + CO2 + ଶକ୍ତି
(D) ଇଥାନଲ୍ + CO2 + ଶକ୍ତି
Answer:
(D) ଇଥାନଲ୍ + CO2 + ଶକ୍ତି

38. କେଉଁଟି ବାୟୁ ଉପଜୀବୀ ଶ୍ଵାସନରେ ଶର୍କରାର ଅନ୍ତିମ ପରିଣତି ଅଟେ ?
(A) CO2 + ଜଳ + ଶକ୍ତି
(B) CO2 + ଜଳ + ଶକ୍ତି
(C) O2 + ଜଳ + ଶକ୍ତି
(D) O2 + ଜଳ + ଶକ୍ତି
Answer:
(B) CO2+ ଜଳ + ଶକ୍ତି

39. ନିମ୍ନୋକ୍ତ କେଉଁଟି ମନୁଷ୍ୟର ଶ୍ଵାସତନ୍ତ୍ର ସହିତ ସଂଶ୍ଳିଷ୍ଟ ନୁହେଁ ?
(A) ନାସାର ନ୍ଧ୍ର -ନାସା ପଥ-ଗ୍ରସନୀ – ଶ୍ଵାସନଳୀ –
(B) ନାସାରନ୍ଧ୍ର – ନାସାପଥ – ଗ୍ରସନୀ – ଶ୍ଵାସନଳୀ – ଫୁସଫୁସ୍
(C) ନାସାପଥ – ଗ୍ରସନୀ – ଗାଲି – ଶ୍ଵାସନଳୀ – ଫୁସଫୁସ୍
(D) ନାସାପଥ – ଗ୍ରସନୀ – ଶ୍ଵାସନଳୀ – ଫୁସଫୁସ୍
Answer:
(A) ନାସାର ନ୍ଧ୍ର -ନାସା ପଥ-ଗ୍ରସନୀ – ଶ୍ଵାସନଳୀ –

40. କେଉଁଟି ବାୟୁ ଅପଜୀବୀ ଶ୍ଵାସନରେ ପେଶୀକୋଷର ଶର୍କରାର ଅନ୍ତିମ ପରିଣତି ଅଟେ ?
(A) ଇଥାନଲ୍ + ଶକ୍ତି
(B) ଲାକ୍‌ଟିକ୍ ଅମ୍ଳ + ଶକ୍ତି
(C) CO2 ଜଳ + ଶକ୍ତି
(D) CO2 ଜଳ + ଶକ୍ତି
Answer:
(B) ଲାକ୍‌ଟିକ୍ ଅମ୍ଳ + ଶକ୍ତି

41. ନିମ୍ନୋକ୍ତ ମଧ୍ୟରୁ କେଉଁ ଜୀବ ଦ୍ଵାରା ଶ୍ଵାସକ୍ରିୟା କରେ ?
(A) ବେଙ୍ଗ
(B) ସାପ
(C) ଅସରପା
(D) ମାଙ୍କଡ଼
Answer:
(A) ବେଙ୍ଗ

42. ହିମୋଗ୍ଲୋବିନ୍ ଅକ୍‌ସିଜେନ୍ ଗ୍ରହଣକରି କେଉଁଥ‌ିରେ ପରିଣତ ହୁଏ ?
(A) କାର୍ବୋକ୍‌ ହିମୋଗ୍ଲୋବିନ୍
(B) ହାଇଡ୍ରୋହିମୋଗ୍ଲୋବିନ
(C) ଅକ୍‌ସିହିମୋଗ୍ଲୋବିନ୍
(D) କାର୍ବନ ଡାଇଅକ୍‌ସାଇଡ୍
Answer:
(C) ଅକ୍‌ସିହିମୋଗ୍ଲୋବିନ୍

43. ନିମ୍ନୋକ୍ତ ମଧରୁ କେଉଁଟି ଶ୍ଵାସନର ପର୍ଯ୍ୟାୟ ନୁହେଁ ?
(A) 169
(B) ଗ୍ୟାସ୍ବିନିମୟ
(C) ଗ୍ୟାସ୍‌ରିଚଳନ
(D) ବିସରଣ
Answer:
(D) ବିସରଣ

BSE Odisha 10th Class Life Science Important Questions Chapter 2 ଶ୍ବସନ

44. କ୍ରେବସ୍ ଚକ୍ରକୁ ଅନ୍ୟ କେଉଁ ନାମରେ କରାଯାଇଛି ?
(A) ଏସିଟିକ୍ ଏସିଡ୍ ଚକ୍ର
(B) ସାଇଟ୍ରିକ୍ ଅମ୍ଳ
(C) ଅକ୍‌ଲିକ୍ ଏସିଡ଼ଚକ୍ର
(D)କୌଣସିଟି ନୁହେଁ
Answer:
(B) ସାଇଟ୍ରିକ୍ ଅମ୍ଳ

45. ଏକ ବାୟୁ ଅପଜୀବୀ ଶ୍ଵାସନରେ 16ଟି ATP ଉତ୍ପନ୍ନ ହେଲେ କେତୋଟି ଗ୍ଲୁକୋଜ ଭାଙ୍ଗିଥାଏ ?
(A) 8
(B) 6
(C) 16
(D) 18
Answer:
(A) 8

46. 4ଟି ATPରୁ କେତେ କିଲୋଜୁଲ ଶକ୍ତି ମିଳେ ?
(A) 61
(B) 122
(C) 120
(D) 124
Answer:
(B) 122

47. ନିମ୍ନୋକ୍ତ ମଧ୍ୟରୁ କେଉଁ ପ୍ରାଣୀ ଫୁସ୍‌ଫୁସ୍ ଦ୍ୱାରା ଶ୍ଵାସକ୍ରିୟା କରେ ?
(A) ଗେଣ୍ଡା
(B) କଙ୍କଡ଼ା
(C) ଶାମୁକା
(D) ତିମି
Answer:
(D) ତିମି

48. କେଉଁ ଉଭିଦର ପତ୍ରର ଉଭୟ ପୃଷ୍ଠରେ ଷ୍ଟୋମାଟା ଥାଏ ?
(A) ଧାନ
(B) ଆମ୍ବ
(C) ପଣସ
(D) ଶିମ୍ବ
Answer:
(A) ଧାନ

49. ପ୍ରଶ୍ଵାସ ସମୟରେ ବକ୍ଷଗହ୍ବରର ଆୟତନ ଶତକଡ଼ା କେତେ ବୃଦ୍ଧିପାଏ ?
(A) 80%
(B) 60%
(C) 40%
(D) 20%
Answer:
(D) 20%

50. ଫୁସ୍‌ଫୁସ୍ ଚାରିପଟେ କ’ଣ ରହିଥାଏ ?
(A) ଫୁସ୍‌ଫୁସ ଶିରା
(B) ଫୁସ୍‌ଫୁସ୍ ଧମନୀ
(C) ପୂରାଲକେଭିଟି
(D) ଷ୍ଟରନମ୍
Answer:
(C) ପୂରାଲକେଭିଟି

Subjective Type Questions With Answers

1. ମନୁଷ୍ୟର ଶ୍ଵାସତନ୍ତ୍ରର କାର୍ଯ୍ୟ ସମ୍ବନ୍ଧରେ ଆଲୋଚନା କର ।
ଉ –
ନାସାପଥ, ଗ୍ରସନୀ, ଗ୍ଲଟିସ୍, ଅଧ୍ୱଜିହ୍ନା, ସ୍ୱରପେଟିକା, ଶ୍ଵାସନଳୀ, ବ୍ରେନକାଇ, ଶ୍ଵାସନଳିକା, କୋଟରିକା, ଫୁସ୍‌ଫୁସ୍

  • ନାସାପଥ – ଏହା ମଧ୍ୟଦେଇ ବାୟୁ ଗଲାବେଳେ ଧୂଳିକଣା ଓ ଜୀବାଣୁ ମ୍ୟୁକସ୍ ଝିଲ୍ଲୀରେ ଲାଗି
  • ଗ୍ରସନୀ – ଏସ୍‌ରେ ଶ୍ଵାସନଳୀ ଓ ଖାଦ୍ୟନଳୀ ଯାଇଥାଏ ।
  • ଟନ୍‌ସିଲ୍ – ଗ୍ରସନୀର ପ୍ରାୟ ପଛ କାନ୍ଥରେ ଏକ ଯୋଡ଼ା ଟନସିଲ୍ ରହିଛି । ଏହା ଏକ ଲସିକାଭ ଅଙ୍ଗ ।
  • ଗ୍ଲଟିସ୍ – ଶ୍ଵାସନଳୀର ଦ୍ବାରକୁ ଗ୍ଲଟିସ୍ କହନ୍ତି । ଏହା କ୍ଷୁଦ୍ର ରନ୍ଧ୍ର । ଏହା ମଧ୍ୟଦେଇ ବାୟୁ ସ୍ୱରପେଟିକାରେ ପ୍ରବେଶ କରେ ।
  • ଗଲେଟ୍ – ଖାଦ୍ୟନଳୀର ଦ୍ଵାରକୁ ଗଲେଟ୍ କହନ୍ତି ।
  • ସ୍ୱରପେଟିକା – ସ୍ବରରଜୁର କମ୍ପନରୁ ଧ୍ୱନି ସୃଷ୍ଟି ହୁଏ ।
  • ଶ୍ଵାସନଳୀ – ଏହା ମଧ୍ୟଦେଇ ଫୁସ୍‌ଫୁସ୍ ମଧ୍ୟରୁ ବାହାରେ ।
  • ବ୍ରେନକାଇ – ବାମ ଓ ଦକ୍ଷିଣ ଫୁସ୍‌ଫୁସ୍‌କୁ ବାୟୁ ନିଏ ଏବଂ ଉଭୟ ଫୁସ୍‌ଫୁସ୍‌ରୁ ଏହା ମଧ୍ୟଦେଇ ବାୟୁ ବାହାରିଯାଏ ।
  • ଶ୍ଵାସନଳିକା – ଏହା ଅନେକ ଶାଖା ବିସରଣ କରେ ।
  • କୋଟରିକା – ଏହା ଛୋଟ ଛୋଟ ବାୟୁପୂର୍ଣ୍ଣ କୋଠରି । ଏହା ରକ୍ତକୈ ଶି କଦ୍ବାରା ଆବୃତ ହୋଇଥାଏ । କୋଟରିକା ଓ ରକ୍ତକୈ ଶି କ ମଧ୍ୟରେ ଗ୍ୟାସ୍ ବିନିମୟ ହୋଇଥାଏ ।

2. ଶ୍ବସନ କ’ଣ ? ଜୀବ ଶରୀରରେ ଏହାର ଆବଶ୍ୟକତା ସମ୍ବନ୍ଧରେ ସୂଚନା ପ୍ରଦାନ କର ।
ଉ-
(I) ଶ୍ବ ସନ- ଜୀବକୋଷରେ ଖାଦ୍ୟର ଜାରଣ ହୋଇ ସେଥୁରୁ ଶକ୍ତି ନିର୍ଗତ ହୁଏ । ଶରୀରର ବିଭିନ୍ନ ପ୍ରକ୍ରିୟା ଚାଲୁ ରଖିବା ପାଇଁ ଶକ୍ତି ଆବଶ୍ୟକ । ଯେଉଁ ପ୍ରଣାଳୀରେ ଖାଦ୍ୟରୁ ଶକ୍ତି ନିର୍ଗତ ହୁଏ ତାହାକୁ ଶ୍ବସନ କୁହାଯାଏ
(II) ଜୀବଶରୀରରେ ଶ୍ବସନର ଆବଶ୍ୟକତା :

  • ଶ୍ଵ ସନ ପାଇଁ ଅମ୍ଳଜାନ ଆବଶ୍ୟକ । ବେଳେବେଳେ ଏହାର ଅନୁପସ୍ଥିତିରେ ମଧ୍ୟ ଶକ୍ତି ଉତ୍ପନ୍ନ ହୋଇଥାଏ ।
  • ଗ୍ଲା କୋଜ୍ ଏକ ଛଅ ଅଙ୍ଗାରକ ବିଶିଷ୍ଟ ଯୌଗିକ । ଗାଠ ନି କ C6H12O6ଅରେ ।
  • ଅମ୍ଳଜାନ ଉପସ୍ଥିତିରେ ଗ୍ଲା କୋଜ ଅଣୁ ଭାଙ୍ଗି ଅଙ୍ଗାରକାମ୍ଳ (CO2) ଓ ଜଳ (H2O) ସୃଷ୍ଟି ହୁଏ ।
  • ଏହି ପ୍ରକ୍ରିୟାରୁ ଶକ୍ତି ମୋଚିତ ହୋଇଥାଏ । ଏହି କାରଣରୁ ଶ୍ୱସନ ଏକ ଅପଚୟ ପ୍ରକ୍ରିୟା ଅଟେ ।
  •  କୋଷ ଜୀବକରେ ଗ୍ଲୁକୋଜ ଅଣୁର ବିଘଟନ ଘଟି ପ୍ରଥମେ ଏହା ତିନି କାର୍ବନବିଶିଷ୍ଟ ଦୁଇଟି ପାଇରୁଭିକ୍ ଅମ୍ଳରେ ପରିଣତ ହୁଏ ଓ ଏହା ସବୁ ପ୍ରକାର ଶ୍ୱସନର ପ୍ରଥମ ସୋପାନ ଅଟେ ।
  • ଅମ୍ଳଜାନର ଉପସ୍ଥିତିରେ ପାଇରୁଭିକ୍ ଅମ୍ଳରୁ ଅଙ୍ଗାରକାମ୍ଳ ଓ ଜଳ ସହ ଶକ୍ତି ସୃଷ୍ଟି ହୁଏ ।
  • ଅମ୍ଳଜାନର ଅନୁପସ୍ଥିତିରେ ବା ଅଭାବରେ ଏଥୁରୁ ଅନ୍ୟ ଉତ୍ପାଦ ସହ ଶକ୍ତି ମଧ୍ୟ ସୃଷ୍ଟି ହୋଇଥାଏ ।

3. ଜୀବଶରୀରରେ ଶ୍ଵାସନର ବିଶେଷତ୍ଵ ସମ୍ବନ୍ଧରେ ବିବରଣୀ ପ୍ରଦାନ କର ।
ଊ-

  • ଶ୍ଵାସନର ପ୍ରଥମ ପର୍ଯ୍ୟାୟରେ ଗୋଟିଏ ଛଅ ଅମ୍ଳ) ଅଣୁରେ ପରି ଣତ ହୁଏ । ଏଥ‌ିରେ ଗୁ କୋଜ ଅଣୁ ଭାଙ୍ଗୁ ଥ‌ିବାରୁ ଏହାକୁ ଗ୍ଲାଇକୋଲି ସିସ୍ କୁ ହାଯାଏ । କୋଷଜୀବକରେ ସଂଘଟିତ ହୁଏ ।
  • ମୁକ୍ତ ଅମ୍ଳଜାନର ଅଭାବରେ ପାଇରୁଭେରୁ ସୃଷ୍ଟି ହୁଏ । ସାଧାରଣତଃ ଇଷ୍ଟ୍ରରେ ଏହି ପ୍ରକ୍ରିୟା ହୋଇଥାଏ । ଏହା ବାୟୁ ଅପଜୀବୀ ଶ୍ୱସନ ଅଟେ ଓ ଏହାକୁ ସୁରାସାର କିଣ୍ବନ ମଧ୍ୟ କୁହାଯାଏ ।
  • ଅମ୍ଳଜାନ ଉପସ୍ଥିତିରେ ଗୋଟିଏ ପାଇରୁଭେଟ୍ ଅଣୁରୁ ଅଙ୍ଗାରକାମ୍ଳ ଅଣୁ ସୃଷ୍ଟି ହୋଇଥାଏ; ତାହା ସହିତ ଜଳ ଓ ଶକ୍ତି ନିର୍ଗତ ହୁଏ । ଏଥିରେ ସୁରାସାର କିଣ୍ବନଠାରୁ ଅଧିକ ଶକ୍ତି ଉତ୍ପନ୍ନ ହୁଏ ।
  • ବେଳେବେଳେ ଆମ ପେଶୀକୋଷରେ ଅମ୍ଳଜାନର ଅଭାବରେ ପାଇରୁଭେଟ୍ ଅଣୁଟି ଭାଙ୍ଗି ଲାକ୍‌ଟିକ୍ ଅମ୍ଳରେ ପରିଣତ ହୁଏ । ଏହାକୁ ଲାକ୍‌ଟିକ ଅମ୍ଳ କିଣ୍ବନ କୁହାଯାଏ । ଏଥ‌ିରେ ବା କ୍ରାମ୍ପ ହୋଇଥାଏ ।
  • ଗୋଟିଏ ଗ୍ଲା କୋଜ ଅଣୁରୁ ବାୟୁ ଉପଜୀବୀ ଶ୍ୱ ସନ ରେ 38ଟି ATP ଅଣୁ ଜାତ (ଉଭୟ ସୁରାସାର କିଣ୍ବନ ଓ ଲାକ୍‌ଟିକ୍ ଅମ୍ଳ) କିଣ୍ବନରେ 2 ATP ଅଣୁ ଜାତ ହୋଇଥାଏ ।

BSE Odisha 10th Class Life Science Important Questions Chapter 2 ଶ୍ବସନ 8

1. ଜୈବିକ କାରଣ କାହାକୁ କହନ୍ତି ? ଜୀବ ଶରୀରରେ ଏହାର ଆବଶ୍ୟକତା କ’ଣ ?
ଉ-

  • ଅମ୍ଳଜାନ ଦହନରେ ସହାୟକ । ଦହନ ବେଳେ ତାପଶକ୍ତି ନିର୍ଗତ ହୋଇଥାଏ । ଜୀବ ଶରୀରରେ ଏଭଳି ଦହନ ପ୍ରକ୍ରିୟାକୁ ଜୈବିକ ଜାରଣ କୁହାଯାଏ ।
  • ଏଥପାଇଁ କେତେକ ଏନ୍‌ଜାଇମ୍ ଆବଶ୍ୟକ ପଡ଼ିଥାଏ । ଜୀବକୋଷର କୋଷଜୀବକ ଓ ମାଇଟୋକଣ୍ଡ୍ରି ଆରେ ଏଭଳି ଅନେକ ଏନ୍ ଜାଇମ୍ ରହି ଥାଏ। ସେଗୁଡ଼ିକର ଖାଦ୍ୟରୁ ଶକ୍ତି ଉତ୍ପନ୍ନ ହୁଏ । ଏହି ଶକ୍ତି ATP ଅଣୁରେ ବାନ୍ଧି ହୋଇ ର ହି ଥାଏ ତେଣୁ ଜୀବକୋଷରେ ATPକୁ ଶକ୍ତି ମୁଦ୍ର। ଓ ମାଇଟୋକଣ୍ଡ୍ରିଆକୁ ଶକ୍ତିକେନ୍ଦ୍ର କୁହାଯାଏ ।
  • ପେକିଏ ATP ଆଶ ଇଁ ନି ADP ଓ Pi କେ ପରିଣତ ହେଲେ 30.5 କିଲୋ ଜୁଲ୍ ଶକ୍ତି ନିର୍ଗତ ହୁଏ । ପେଶିର ସଂକୋଚନ ପ୍ରସାରଣ, ପୁଷ୍ଟିସାରର ସଂଶ୍ଳେଷଣ, ସ୍ନାୟବିକ ଆବେଗ ସଂଚରଣ ଭଳି ସମସ୍ତ ପ୍ରକ୍ରିୟାରେ ATP ବ୍ୟବହୃତ ହୁଏ ।

BSE Odisha 10th Class Life Science Important Questions Chapter 2 ଶ୍ବସନ

2. ଶ୍ଵାସନଳୀର ଗଠନ ଓ କାର୍ଯ୍ୟ ସମ୍ବନ୍ଧରେ ଲେଖ ।
ଊ-

  • ଶ୍ଵାସନଳୀର ଆରମ୍ଭରେ ସ୍ୱରପେଟିକା ଥାଏ । ବା ଭୋକାଲ କର୍ଡ଼ର କମ୍ପନଦ୍ବାରା ଧ୍ଵନି ସୃଷ୍ଟି ହୁଏ ।
  • ସ୍ଵର ପେଟିକା ପରେ ଶ୍ଵାସନଳୀ ଦୁଇ ବ୍ରୋକାଇ ଭାବେ ବିଭକ୍ତ ହୋଇ ପ୍ରତ୍ୟେକ ନିଜ ପଟର ଫୁସ୍‌ଫୁସ୍‌ ମଧ୍ୟକୁ ପ୍ରବେଶ କରେ ।
  • ପ୍ରତ୍ୟେକ ପଟରେ ବ୍ରେନ୍‌କାଲ୍ ଅନେକ ଶାଖା ବାୟୁ ପୂର୍ଣ୍ଣ ଛୋଟଛୋଟ କୋଠରି ବା କୋଟରିକାରେ ଖୋଲିଥାଏ ।

3. BSE Odisha 10th Class Life Science Important Questions Chapter 2 ଶ୍ବସନ 9କର ।
ଊ-

  • ଉଭିଦର ପତ୍ରରେ ଷ୍ଟୋମାଟା ରହିଥାଏ ।
  • ଏହା ଉଦ୍ଭଦକୋଷ ମଧ୍ୟକୁ ଗ୍ୟାସ୍ ଓ ଜଳୀୟବାଷ୍ପ ଯିବାଆସିବାପାଇଁ ଦ୍ଵାର ସଦୃଶ କାର୍ଯ୍ୟ କରେ ।
  • ଏହି ବାଟ ଦେଇ ଅଙ୍ଗାରକାମ୍ଳ ଓ ଅମ୍ଳଜାନ ଗ୍ୟାସ୍ ବିନିମୟ ଘଟିଥାଏ ।
  • ଅଙ୍ଗାରକାମ୍ଳ ଗ୍ରହଣ କରେ ଓ ଏହା ମଧ୍ୟ ଷ୍ଟୋମାଟା ଦେଇ ପ୍ରବେଶ କରେ ।
  • ଶ୍ଵାସନ ପ୍ରକ୍ରିୟାରେ ଅମ୍ଳଜାନ (O2) ବ୍ୟବହୃତ ହୁଏ ଓ ଅଙ୍ଗାରକାମ୍ଳ ବହିର୍ଗତ ନହୋଇ ନିଜ କୋଷ ଭିତରେ ବ୍ୟବହୃତ ହୋଇପାରେ ।
  • ଉଦ୍ଭଦ ଶରୀରରେ ଅମ୍ଳଜାନ ପ୍ରବେଶ ପାଇଁ ହୋଇଥାଏ ।

4. କ୍ରେବସ୍ ଚକ୍ର କାହାକୁ କୁହାଯାଏ ? ସଂକ୍ଷେପରେ ଲେଖ ।
ଉ-

  • ବାୟୁ ଉପଜୀବୀ ଶ୍ଵାସନରେ ମାଇଟୋକଣ୍ଡ୍ରିଆରେ ଅନେକ ପ୍ରକାର ଏନ୍‌ଜାଇମ୍ ଓ କୋଏନ୍‌ଜାଇମ୍ ଏବଂ ପରେ ପରେ ବିଭିନ୍ନ ଅମ୍ଳ ଚକ୍ରାକାରରେ ସୃଷ୍ଟି ହୁଏ ।
  • ସାର୍ ହାନ୍ସ କ୍ରେବସ୍ ଏହି ସମ୍ପର୍କରେ ଅଧିକ ଗବେଷଣା କରି ଏହାର କୌଶଳ ଦର୍ଶାଇଥିଲେ । ତେଣୁ ତାଙ୍କ ନାମାନୁସାରେ ‘ସାଇଟ୍ରିକ୍ ଅମ୍ଳ ଚକ୍ର’’ କୁ ‘କ୍ରେବସ୍ ଚକ୍ର’ କୁହାଯାଉଛି ।
  • 1953 ମସିହାରେ ଏହି ଆବିଷ୍କାର ପାଇଁ ହାନ୍ସ ଚକ୍ରକୁ ‘ସାଇଟ୍ରିକ୍ ଅମ୍ଳ ଚକ୍ର’ ମଧ୍ୟ କୁହାଯାଏ ।

5. ଗ୍ରସନୀର ଗଠନ ସମ୍ବନ୍ଧରେ ସଂକ୍ଷେପରେ ଲେଖ ।
ଊ-

  • ଗ୍ର ସନୀ ଏକ ପେଶୀବହୁଳ ନଳୀ ଓ ଏହା ନାସାପଥର ଶେଷଠାରୁ ଆରମ୍ଭ ହୋଇ
  • ନାସାପଥ ନିକଟରେ ଥ‌ିବା ଗ୍ରସନୀର ଅଂଶକୁ ନାସା -ଗ୍ରସନୀ ଏବଂ ମୁଖଗହ୍ଵର ନିକଟରେ ଥ‌ିବା ଅଂଶକୁ ମୁଖ-ଗ୍ରସନୀ କୁହାଯାଏ ।
  • ଗ୍ରସନୀର ପଛ କାନ୍ଥରେ ଏକଯୋଡ଼ା ଟନ୍‌ସିଲ୍ ରହିଛି ଓ ଏହା ଏକ ଲସିକାଭ ଅଙ୍ଗ ।
  • ଗ୍ରସନୀର ଶେଷଭାଗରୁ ଖାଦ୍ୟନଳୀ ଓ ଶ୍ଵାସନଳୀ ଆରମ୍ଭ ହୋଇଥାଏ ।
  • ଶ୍ଵାସନଳୀର ଦ୍ଵାରକୁ ଗ୍ଲଟିସ୍ ଓ ଖାଦ୍ୟନଳୀର ଦ୍ଵାରକୁ ଗଲେଟ୍ କୁହାଯାଏ ।

6. ପ୍ରଶ୍ଵାସ ଓ ନିଃଶ୍ଵାସବେଳେ ବକ୍ଷଗହ୍ବରର ଅବସ୍ଥିତି ସମ୍ବନ୍ଧରେ ଏକ ନାମାଙ୍କିତ ଚିତ୍ର ଅଙ୍କନ କର ।
ଊ-
BSE Odisha 10th Class Life Science Important Questions Chapter 2 ଶ୍ବସନ 12

7. ଫୁସ୍‌ଫୁସ୍‌ର କୋଟରିକାର ଏକ ନାମାଙ୍କିତ ଚିତ୍ର ଅଙ୍କନ କର ।
BSE Odisha 10th Class Life Science Important Questions Chapter 2 ଶ୍ବସନ 10

BSE Odisha 10th Class Life Science Important Questions Chapter 2 ଶ୍ବସନ 11

1. ମଧ୍ୟଚ୍ଛଦା କ’ଣ ? ଶରୀର ରେ ଏହାର ଆବଶ୍ୟକତା କ’ଣ ?
ଊ-

  • ମଧ୍ୟଚ୍ଛଦା ଏକ ଗମ୍ବୁଜାକୃତି, ପେଶୀବହୁଳ ପଟ୍ଟ ଅଟେ ।
  • ଏହା ବକ୍ଷଗହ୍ବର ଓ ଉଦର ଗହ୍ଵର କୁ ପରସ୍ପରଠାରୁ ପୃଥକ୍ କରିଥାଏ ।

2. ପୃଷ୍ଠକୁକ୍ଷୀୟ ଓ ସମଦ୍ବିତଳ ପତ୍ରରେ ଷ୍ଟୋମାଟାର ଅବସ୍ଥାନ କିପରି ହୋଇଥାଏ ?
ଊ-

  • ପୃଷ୍ଠକୁକ୍ଷୀୟ ପତ୍ରର କେବଳ ଉପରିଭାଗରେ ବା ପୃଷ୍ଠତଳରେ ଷ୍ଟୋମାଟା ଥାଏ । ଉଦାହରଣ ଆମ୍ବ, ପଣସପତ୍ର ।
  • ସମଦ୍ବିତଳ ପତ୍ରରେ ଷ୍ଟୋମାଟା ଉଭୟ ପୃଷ୍ଠ ଓ ନିମ୍ନତଳରେ ଥାଏ । ଉଦାହରଣ – ଧାନପତ୍ର, ଗହମ ପତ୍ର ।

3. ଗ୍ଲାଇକୋଲି ସିସ୍ କ’ଣ ? ଏହା କେଉଁଠାରେ ସମ୍ପାଦିତ ହୁଏ ?
ଊ-

  • ଯେଉଁ ପ୍ରକ୍ରିୟାରେ ଗୋଟିଏ ଗ୍ଲୁକୋଜ ଅଣୁରୁ ତିନି କାର୍ବନ ବିଶିଷ୍ଟ ଦୁଇଟି ପାଇରୁଭିକ୍ ଅମ୍ଳ ସୃଷ୍ଟି ହୁଏ । ଉକ୍ତ ପ୍ରକ୍ରିୟାକୁ ଗ୍ଲାଇକୋଲିସିସ୍ କହନ୍ତି । ଏହା ସମସ୍ତ ପ୍ରକାର ଶ୍ୱସନର ପ୍ରଥମ ସୋପାନ ।
  • ଏହା ଜୀବକୋଷରେ କୋଷ ଜୀବକରେ ସମ୍ପାଦିତ ହୁଏ ।
  • ଏଥରୁ 2ଟି ATP ଉତ୍ପନ୍ନ ହୁଏ ।

4. ମଣିଷର ଶ୍ୱସନ କଣିକା କ’ଣ ? ଏହା କେଉଁଠାରେ ଥାଏ ? ଏହାର ଆବଶ୍ୟକତା କ’ଣ ?
ଉ-

  • ମଣିଷର ଶ୍ୱସନ କଣିକା ହେଉଛି ହିମୋଗ୍ଲୋବିନ୍ (Hb) । ଏହା ଲୋହିତ ରକ୍ତକଣିକାରେ ଥାଏ ।
  • ଏହାର ଅମ୍ଳଜାନ ପ୍ରତି ଅତ୍ମକ ଆକର୍ଷଣ ଥାଏ ଏବଂ ଏହା ଫୁସ୍‌ଫୁସ୍‌ରୁ ଅମ୍ଳଜାନ ବହନ କରିନେଇ କୋଷ ନିକଟରେ ପହଞ୍ଚାଏ ।

5. ଷ୍ଟୋମାଟାର କାର୍ଯ୍ୟ କ’ଣ ? ଏହାର କାର୍ଯ୍ୟକାରିତା କେଉଁ କାରକ ଉପରେ ନିର୍ଭର କରେ ?
ଊ-

  • ଉଦ୍ଭିଦର ଗ୍ୟାସର ବିନିମୟ ଓ ଜଳୀୟବାଷ୍ପର ନିର୍ଗମନ ଷ୍ଟେମାଟାଦ୍ୱାରା ହୋଇଥାଏ ।
  • ଷ୍ଟୋମାଟା ଖୋଲିବା ବା ବନ୍ଦ ହେବା ଆଲୋକ ଓ ତାପମାତ୍ରା ଉପରେ ନିର୍ଭର କରେ ।

6. ନିମ୍ନତର ଜଳଚର ପ୍ରାଣୀ କିପରି ଶ୍ଵାସକ୍ରିୟା
ଉ-

  • ଏକକୋଷୀ, ଛିଦ୍ରାଳ ଓ ହାଇଡ୍ରା ଜାତୀୟ ପ୍ରାଣୀଙ୍କର ଶ୍ଵାସକ୍ରିୟା ପାଇଁ ନିର୍ଦ୍ଦିଷ୍ଟ ଅଙ୍ଗ ନଥାଏ ।
  • ଏମାନେ ଜଳରେ ଦ୍ରବୀଭୂତ ଅମ୍ଳଜାନ କୁ ସିଧାସଳଖ ବିସରଣ ପ୍ରକ୍ରିୟାରେ ଗ୍ରହଣ କରିଥାନ୍ତି ।

7.ଶ୍ଵାସନରେ ଉତ୍ପନ୍ନ ଶକ୍ତି ATPରେ କିପରି ବାନ୍ଧି ହୋଇଥାଏ ସମୀକରଣ ସାହାଯ୍ୟରେ ଦର୍ଶାଅ ।
ଉ-

  • ଜୀବକୋଷରେ ATP କୁ ଶକ୍ତି ମୁଦ୍ରା ଓ ମାଇଟୋକଣ୍ଡ୍ରିଆକୁ ଶକ୍ତିକେନ୍ଦ୍ର କୁହାଯାଏ ।
  • ଏଡୋନେସିନ୍ ଡାଇଫସ୍‌ଫେଟ୍ ସହ ଗୋଟିଏ ଫସ୍‌ଫେଟ୍ ଅଣୁ (Pi) ମିଶିଲେ ATP ଗଠିତ ହୁଏ ।
    BSE Odisha 10th Class Life Science Important Questions Chapter 2 ଶ୍ବସନ 13

BSE Odisha 10th Class Life Science Important Questions Chapter 2 ଶ୍ବସନ

8. ଶ୍ୱସନ ଏକ ଅପଚୟ ପ୍ରକ୍ରିୟା ଅଟେ । କାହିଁକି ?
ଉ-

  • ଶ୍ବସନ ପାଇଁ ଅମ୍ଳଜାନ ଆବଶ୍ୟକ । ଗ୍ଲା କୋଜ ଅଣୁ ଅମ୍ଳଜାନ ଉପସ୍ଥିତିରେ ଭାଙ୍ଗି ଅଙ୍ଗାରକାମ୍ଳ ଓ ଜଳ ସୃଷ୍ଟି ହୁଏ ।
  • ଏହି ପ୍ରକ୍ରିୟାରୁ ଶକ୍ତି ମୋଚିତ ହୁଏ । ଏହି କାରଣରୁ ଶ୍ୱସନ ଏକ ଅପଚୟ ପ୍ରକ୍ରିୟା ଅଟେ ।

9. ଶ୍ଵାସନର ପ୍ରକାରଭେଦ ଦର୍ଶାଅ ।
ଊ-
ଯେଉଁ ପ୍ରଣାଳୀରେ ଖାଦ୍ୟରୁ ଶକ୍ତି ନିର୍ଗତ ହୁଏ, ତାହାକୁ ଶ୍ବସନ କୁହାଯାଏ । ଏହା 2 ପ୍ରକାରର ଯଥା-

  • ବାୟୁ ଉପଜୀବୀ ଶ୍ଵାସନ
  • ବାୟୁ ଅପଜୀବୀ ଶ୍ଵାସନ

ବାୟୁ ଅପଜୀବୀ ଶ୍ଵାସନ ଅମ୍ଳଜାନର ଅନୁପସ୍ଥିତିରେ ଅମ୍ଳଜାନର ଉପସ୍ଥିତିରେ ସମ୍ପାଦିତ ହୁଏ ।

10. ସୁରାସାର କିଣ୍ବନ କାହାକୁ କୁହାଯାଏ ?
ଭ-

  • ମୁକ୍ତ ଅମ୍ଳଜାନର ଅଭାବରେ ପାଇରୁଭେ ଇଥାନଲ୍ ବା ସୁରାସାର ଓ ଅଙ୍ଗାରକାମ୍ଳ ଗ୍ୟାସ୍ ସୃଷ୍ଟି ହୁଏ ।
  • ସାଧାରଣତଃ ଇଷ୍ଟ୍ ରେ ଏହି ପ୍ରକ୍ରିୟା ହୋଇଥାଏ । ଏହା ବାୟୁ ଅପଜୀବୀ ଶ୍ଵାସନ । ଏହାକୁ ସୁରାସାର କିଣ୍ବନ ମଧ୍ୟ କୁହାଯାଏ ।

CHSE Odisha Class 12 English Extended Writing

Odisha State Board CHSE Odisha Class 12 Invitation to English 3 Solutions Extended Writing Textbook Activity Questions and Answers.

CHSE Odisha 12th Class English Extended Writing

Introduction
Writing essays, letters, applications, stories, etc. requires as much skill as in writing a paragraph. It is an art, and when accomplished, develops the writer’s intellectual horizon, especially in literature. Under the circumstances, people are required to write letters or applications for certain purposes. In order to keep in touch with their relatives, friends, or kith and kin, people are required to write letters.

Some people are required to write applications to take leave or get any grant, etc. and some others under different situations prepare reports of the job they are assigned to do. There are still some people who write short stories, dramas, articles, etc. for the purpose of their publication in newspapers, weekly/fortnightly / monthly magazines. However different types of writings under different situations require different forms and norms.

When writing is meant for a reader or a group of readers, it then follows a set of principles or conventions which bind the form of writing within specified confines. Accordingly, the writer has to follow certain norms and regulations so as to produce his / her writing in an elegant and readable form. The theme of writing a composition is firstly expressed in the first instance. When a single sentence cannot express the whole thing we want to write, then we require a number of sentences to be written which are normally linked with one another.

In course of such writing with the combination of some related sentences, we are able to express our view(s) / idea(s) exactly to the point. Writing essays, so to say, is an extended form of writing different paragraphs at one place to express the idea or subject matter neatly. Traditionally speaking, essay is an extended form of writing some paragraphs on a given topic. But, on the other hand, essay today is not confined to the four comers of set topic as was prevalent in the past.

Essay is, no doubt, a written composition less elaborate than a treaty, or it may be an experimentation of one’s intellectual depth of the domain of thinking. It is a form of free writing or development on any topic expressed in an elegant literary language. In this respect, essay has become a highly subjective and personalized form of writing bereft of any ostensible purpose at the back. Hence, it is apt to observe that essay is free from any burden or pressure or any narrowness of feeling; rather it takes its birth in one’s fanciful imagination and leisure and the essayist is in a state of ecstasy unlike ordinary human beings.

CHSE Odisha Class 12 English Extended Writing

Activity – 1

Can you now think of points for writing on “Your first day in college” ? Can you arrange these hints into points and develop them into a passage of 3 to 4 paragraphs ?

Answer:
My First Day At College
New atmosphere:
After passing the Secondary Examination, I got myself admitted to the Higher Secondary (i.e. Intermediate) class of a college in Kolkata. After admission when I attended college for the first time, I found myself in a new atmosphere. It seemed to be a different world from the one in which I had spent seven or eight years. The big building, the spacious staircase, the big classrooms, the wide corridors, the Principal’s room, the Professors’ room were in great contrast with those in my school. They left a deep impression on me.

The class arrangements:
The first interesting thing was the arrangement of classes. We had to attend school from 10.30 a.m. to 4 p.m. with no break except the recess for half an hour for tiffin and recreation. But on the first day I attended college at 1 p.m. My first class began at 1 p.m. It was a new experience to me. On the first day I had only three classes. Between two classes again there was an interval of one period.

Another difference from school life was the changing of classrooms. Instead of having all the classes in the same room, we* had to go to different rooms for different classes. A large number of students had to pass through the corridors to go from one room to another. Naturally, there was some noise. But it ceased when we took our seats in our respective classes. It was a novel experience for me.

Professors’ lectures:
We were about one hundred and fifty students in our class, so it was a very big class. It was the class of a Professor of English. He came and called our rolls. He welcomed us and gave an introductory lecture about our new life in college and how different it was from school life. He hoped that we should all follow his lecture attentively. I felt that it was not possible for him to take individual care of us as it was done in the school.

In this respect, it seemed to me that the teaching in school was better. The Professor gave his lecture in a general way. I took my seat on one of the front benches. I made it a point to listen to his lecture attentively, otherwise, I would be the loser and not him. There was no fear of punishment for neglecting lessons in the class. Hence some students sat on the back benches. They had no books. They did not seem to be attentive.

CHSE Odisha Class 12 English Extended Writing

Activity – 2

You have already read “On the Road to Jaipur”, “A Day with Magumaster” and “First Day”. All these are narrative texts. Similarly, write a narrative text on any one of the following topics.
(a) On the Road to (A place of your choice)
(b) A day with grandpa/grandma
(c) My Last Birthday

Answer:
(a) On the Road to Puri:
My place of choice is always Puri. I enjoy my journey to this world famous holy place from Cuttack. The travel is delightful to the core. On the road to Puri is Bhubaneswar, the city of temples and the capital of Odisha. N.H. 5 passes through it. The four-lane road that leads to Bhubaneswar is one of the busiest ones in India. Thousands of trucks, cars and two- wheelers ply on the road, which is the life-blood of trade and commerce.

Bhubaneswar with its beautiful building and Lingaraj temple compels any traveler’s attention. The snow-white temple of Thakur Anukulchandra never escapes anyone’s notice. From Bhubaneswar, another fine wide road takes us to Puri. On the way, I catch sight of marvelous Buddha Stupa arid Pipili which has carved a name for itself for unique canopies. From Pipili, I go to Konark. This Sun Temple is indeed a symphony in stone.

From this place, I drive towards Puri along an unbelievably scenic Marine Drive. The sight of the sea marvels me. The splendor of nature on the road to Puri fascinates me beyond imagination. At last, I reach my grand destination – Puri, a place which is visited by thousands of pilgrims every day for its world-renowned Jagannath temple and magnificent sea beach.

(b) A day with grandma:
My mind now goes back to 1990. It was Sunday. At dawn, my grandma woke up. She wanted me to take my bath as early as possible. At first, I could not understand anything. She was shivering in cold. Because it was Kartik Pumima. She was interested to take me to a temple nearby. Bitter winter prevented me from taking my bath and accompanying her to the temple. My grandma, even at the ripe old age of 92, was very stubborn.

She insisted on finishing my work. I could not but obey her. My grandma’s joy knew no bounds when I went to the temple. On the way, she told me how my grandpa was religious. She was walking very fast. We reached the temple soon. She said her prayers for some minutes. I marked, when she was praying, tears rolled down her cheeks. I felt terribly sad. We came back home. I lost my mother soon after my birth. My father was irresponsible. My grandma was dutiful to the core.

She prepared breakfast, We ate together. She seemed to be very happy. As usual, after finishing her breakfast, she read her religious books. Then she rested for some time. All of a sudden she called me in a loud voice. I rushed to her. She was feeling restless. My father was out. I felt desperate. I called one of my friends and said to him to call the doctor. I was trying to give her comfort. The doctor came and took her temperature. It was 103. He gave me a prescription and instructed me to give her medicines in time. My friend bought them at once.

I gave her medicines, water, and fruit from time to time. The news of my grandma’s illness spread thick and fast. She was an object of respect in the eyes of the villagers. They came to see my grandma. The day passed, but there was no change in her temperature. She muttered something. It was 8 p.m. Silence had descended on the village. I sat by her helplessly. Her last. words were ‘Hai Ram’. She left me forever. I wept bitterly. Years have rolled by. Her beautiful face still swims before my eyes. I still treasure her loving care and valuable advice. Her affectionate words linger in my memory.

CHSE Odisha Class 12 English Extended Writing

(c) My Last Birthday
I always look forward to enjoying a special moment in my life – my birthday. The celebration of my last birthday is an unforgettable one. It was the day when my second-year (Science) result was out. I had come out with flying colors. I felt as if I were on the moon. My entire family decided to celebrate my birthday with pomp and ceremony. The hall was exquisitely decorated with balloons and colored lights. I imagined it was heaven on earth. Guests including my lecturers, friends, and relatives reached our house in time.

It was a brilliant summer moonlit night. A gentle breeze passed through the hall. The moonlight that came through the window lent a rare beauty to that place. The moment I had been waiting for came at last. I was exactly 9 p.m. I caught my birthday cake amidst the clapping and cries, Happy birthday to you, happy birthday, Sanskar of my parents and guests. I put out the candle that surrounded it. To my untold excitement, I gently put pieces of cake into the mouths of my parents and my sister and then to the invitees. They showered their blessings on me. There were gifts all around. I was beside myself with joy when my father presented me a laptop. They all attended the dinner gleefully. The guests departed with smiles on their faces.

Activity – 3

Distribute the following topics among the members of your group, so that each one is assigned one topic. Think over your assigned topic for five minutes and write down all the ideas that come to your mind. You should not write full sentences, write only short phrases or single words. Then let each member arrange his/her ideas under some main points and discuss these main points with the members of the group. Now, develop these into paragraphs – just like the text on the thermometer. List of topics – Your ballpoint pen, Your bicycle/scooter /motorcycle, A cricket field, An alarm clock, etc.

Answer:
Your Ball-point Pen:
My ballpoint pen is a unique one. Its specialty is its German fluid ink, though it is made in India. It is made of special material. It has an orbital tip. It is very light. The color of my ballpoint pen is pink. It is glossy. It is not a ‘use and throws’ one. When the ink is finished, I put another refill into it. It looks very simple but attractive. It is remarkable for its smooth writing. My ballpoint pen is neatly designed. Near its hole where refill is put lies a round shining object.lt lends beauty to the pen. This cello ballpoint pen is my treasured possession.

Your Bicycle:
My bicycle is the cheapest and simplest form of transport on wheels. It consists of the main frame and a secondary frame both joined together and triangular in shape. The main frame has a head tube in its front. The handle of my bicycle protrudes out from the upper end of the head tube while the fork protrudes out from the lower end of the head tube. A inner bolt holds both the handle and the fork in place. At the lower end of the fork is the front axle which holds the wheel.

At the opposite end of the upper end of the head, the tube is a tube that protrudes out of the hollow of the main frame. This has a nut-bolt arrangement to hold the seat. Similarly, the peak of the triangular main frame has a hole and axle arrangement to which the crank is connected. The secondary frame has a seat-stay which serves as a support for the weight on the seat. The upper end of the seat stay is joined to the main frame while the lower end forks out into two legs which hold the rear wheel in place.

The wheels consist of a central spoke holder from which spokes radiate out into the rim of the wheel where it is screwed. The spokes keep the rim in shape and support it. Besides this, the wheel has an inflatable tube and an outer tire. The tube has a valve through which air is pumped into it. This valve emerges on to the outer side of the rim through a hole in it. The crank is held oy the main frame while the rear frame holds a sprocket wheel. A chain extends from the crank and is wound around the sprocket wheel.

The chain is fitted onto them and locked. The crank further has two pedals joined to it. When force is applied to the pedals, the crank turns and this chain transmits this force applied to the sprocket wheel which is attached to the rear wheel, thereby moving it. Consequently, the cycle moves. To facilitate proper control of the bike, there are brakes. Brake levers attached to the handle and have brake brackets with rubber on them which are fitted close to the rear and front wheels. Besides this, mudguards are provided for both wheels. Finally, a bell and a stand complete the bike. The stand serves as a prop to keep the bicycle standing.

CHSE Odisha Class 12 English Extended Writing

Your Motorcycle:
My motorcycle is one of the most popular means of conveyance. Now different brands are manufactured by different companies. Each of them has a distinctive feature. Mv motorcycle consists of various parts, such as a handle, brake, fuel tank, silencer pipe, engine (four- stroke) carburetor, clutch lever, speedometer, two tires, and indicator (front and rear) compartment. These parts are systematically set in the bike – comfortable seat, headlight, shock absorber, and so on.

Four-stroke motorbike is superior to a two-stroke one. because the former has smooth pick-up. Besides, it doesn’t produce defeaning sound: On the other hand, the motorbike having a two-stroke engine doesn’t have that smooth pick-up. It produces sound. The consumption of a four-stroke engine is better than that of a two-stroke engine. The former is economical. Replacement of engine oil at the scheduled time is of great importance. Now wherever we notice, we see varieties of wonderful bikes playing on the road.

A Cricket Field:
The expression ‘A cricket field’ excites me in great measure. Amidst thousands of spectators, it comes to life in a flash. First of all, it must be smooth and grassy -rue. The length of a cricket field is not the same in all cricket-playing nations. In India, it has about 65 yards long, but in Australia, it is 85. An essential part of a cricket field is its pitch where the players bat and run between the wickets. This pitch is 22 yards in length. It includes two batting creases on both sides.

It is IV2 yards long from three stumps which are fixed almost about 5 cm from each other. The bells are placed on them, they are called wickets. A line is drawn there. Inside it stands a batsman. In power-play, the length of the field is restricted to 30 yards. When a batsman hits that cross its boundary is called a boundary (4 runs; This means the batsman has got four runs. If he strikes the ball that goes over the boundary without touching the ground is called a sixer. Here the batsman gets six runs. The presence of two umpires, eleven fielders, and two batsmen during the match lends a rare beauty to a cricket field.

An Alarm Clock:
An alarm clock is one that wakes up at a particular time by making a noise. It comes in different designs, sizes, and colors. It is made of different materials. That depends on the manufacturers. An alarm clock has a background called a face with hands that point to the hours and minutes. A digital alarm clock shows the time as a set of numbers. It has great importance in our lives. Today, life has become a hectic one.

In times of emergency, we need an alarm clock most. When we are in a state of delicious slumber, we have an urgent call to attend at a particular time or to go to the station or airport early, its defeaning noise wakes us up. As a result, we become conscious of our duties. Because of it, we cultivate a sense of timing. Thanks to the strides made in the field of science and technology, now mobile phones are playing the role of alarm clocks.

CHSE Odisha Class 12 English Extended Writing

Activity – 4

Now, discuss any one of the following topics in your group. Generate ideas, write them down, organize them into broader sections and write down the outlines. Then distribute the broader sections among the members so that each member can write a paragraph on one of them. You have to do all these quickly so that you can beat other competing groups in the class.
Topics: Concrete
Sports and Games
The Value of Education
The Professions of your choice.

Sports and Games:
Some people seem to think that sports and games are unimportant things that people do, at times when they are not working, instead of going to the cinema, listening to the radio, or sleeping. But in actual fact, sports and games can be of great value, especially to people who work with their brains most of the day, and should not be treated only as amusements. Sports and games make our bodies strong, prevent us from getting too fat, and keep us healthy. But these are not their only uses.

They give us valuable practice in making eyes, brains and muscles work together. In tennis, our eyes see the ball coming, judge its speed and direction, and pass this information on to the brain. The brain then has to decide what to do, and to send its orders to the muscles of the arms, legs, and so on, so that the ball is met and hit back where it ought to go. All this must happen with very great speed, and only those who have had a lot of practice at tennis can carry out this complicated chain of events successfully. For those who work with their brains most of the day, the practice of such skills is especially useful.

Sports and games are also very useful for character training. In their lessons at school, boys and girls may learn about such virtues as unselfishness, courage, discipline, and love of one’s country. But what is learned in books cannot have the same deep effect on a child’s character as what is learned by experience. The ordinary day school cannot give much practical training in living, because most of the pupils’ time is spent in classes, studying lessons.

So it is what the pupils do in the spare time that really prepares them to take their place in society as citizens when they grow up. If each of them learns to work for his team and not for himself on the football field, he will later find it natural to work for the good of his country instead of only for his own benefit.

CHSE Odisha Class 12 English Extended Writing

Answer:
The prospect of defeat in sports and games should not unnerve us. Sometimes we fear failure. Failures are a part and parcel of life. We forget it: ‘hopes are dupes’, fears may be bias. Moreover, defeat should not disappoint us. Sports and games teach us the way to face failure which we come across as an enemy comer. We live in an era of globalization. We should move with changing times. George Orwell, one of the most eminent English writers, satirized sports and games. Let us forget it. We believed in one world. Sports and games pave the way for our cosmopolitan outlook. Men may come and men may go, but they go on forever.

CHSE Odisha Class 12 English Writing Note-making and Summarizing

Odisha State Board CHSE Odisha Class 12 Invitation to English 3 Solutions Writing Note-making and Summarizing Textbook Activity Questions and Answers.

CHSE Odisha 12th Class English Writing Note-making and Summarizing

Introduction
Summarization is an important skill in writing. While summarizing a given version, look to the pith and substance leaving out irrelevant and unneccessary details so as to form a relevant and condensed paragraph of the original topic. Summary writing has no fixed length. It may be half, one-third or a quarter of the given version. It depends on the kind of writing we are assigned to or the purpose for which we are writing the summary. The following points are to be taken note of while writing a summary :
(a) Go through the original passage as many times as is possible.
(b) Notice the main theme of the topic first.
(c) Note down the important points leaving out the unnecessary elaboration,
(d) First prepare a draft using your points.
(e) Avoid long phrases and substitute shorter ones or single word expressions.
(f) If you feel necessary, make some changes in the body of your summary.
(g) Avoid adjectival expressions if not absolutely essential.
(h) Read the draft to see if any important point is omitted.
(i) Finally, using the above guidelines, write a neat and orderly summary.

CHSE Odisha Class 12 English Writing Note-making and Summarizing

Activity – I

Mr M R Fatnaik, the Press Secretary to the Industries Minister, came across the following letter in the The Times of India. Mr Patnaik went through the letter and prepared notes as in (b). Later, using his notes,he prepared a summary (c) for the Minister. Examine the contents of the letter, the notes and the summary.

(a) The letter : Failure of Public Sector Industries
Sir.
It is sad to note that the public sector industries in India are a failure.
There are several shortcomings which have contributed to the failure of these industries. Some of these shortcomings are as follows : First they run on government funds, under the control of autonomous corporations, which have their peculiar ways of functioning i.e. on non-business-like principles. In other words, it may be said tht they are not run on a commercial basis.

It is incorrect to believe that they are managed on non-commercial lines, as they have shown some profits. If run on commercial lines they can show still better results. Secondly they are generally run by bureaucrats who do not possess adequate business and managerial skills. The result is that there is too much red-tapism that mars the efficiency of these undertakings. These undertakings can show much better results, if their management is entrusted to professional managers.

Thirdly, in many cases it is found that these public sector undertakings are not working to their full capacity. Under-utilization of capacity can never be considered a sound commercial practice, whatever the reasons. Lastly, these undertakings, being autonomous bodies, pay high salaries and allowances to their staff. This breeds inefficiency. It suggests that corrective measures by the Government and the industries should immediately be taken to remove these shortcomings. These measures should be taken before things go out of control.
Bandana Mishra
Talcher

(b) Notes : Failure of Public Sector Industries
1. Reasons:
(i) run by autonomous corporations on non-commercial basis
(ii) run by bureaucrats without business expertise and managerial skill
(iii) most industries work below capacity
(iv) pay high salary and perks to the staff

2. Steps for improvement:
Government and industries to take immediate corrective measures

(c) Final Summary:
Our Public Sector Industries are a failure for the following reasons. They are controlled by autonomous bodies and are run on non-commercial basis. The autonomous bodies, in turn, are manned by bureaucrats having little business expertise or skill. Besides, many of these industries work below capacity and pay high salary and perks to the staff. The Government and the industries should take immediate steps to remove these shortcomings.

Language notes : Notice how longer expressions have been replaced by shorter in the final summary.

Longer expressions Changed to
  •          the public sector industries in India
  •          our public sector industries
  •      run … under the control of autonomous corporations
  •         controlled by autonomous bodies
  •         not on a commercial basis
  •          on non-commercial basis
  •       bureaucrats who do not possess adequate business and managerial skill
  •          bureaucrats having little business expertise
  •          not working to their full capacity
  •         work below capacity
  •         corrective measures by the Government and the industries should immediately be taken to remove
  •          the Government and the industries should take immediate steps to remove

Activity – 2

CHSE Odisha Class 12 English Writing Note-making and Summarizing

The editor of a leading newspaper finds the following report too long to publish. He, therefore, asks the sub-editor to cut it short so that it can be published. Imagine that you are the sub-editor. Read the report and prepare a summary.

(a) The Report

Killing tracks

Every now and then, an elephant gets run over on the 100-year-old railway track bisecting UP’s Rajaji National Park. Over 20 elephants have been killed and many more maimed in the past two decades. Unless something ugrent is done about it, the poor animals in the park are sure to perish soon. In order to save these elephants, the railway authorities may consider implementing the following proposals. This accident-prone area within the park should be declared a caution zone.

The speed of the trains in this area should be decreased. They should be allowed to run at 20 Kmph. Although this would involve an additional 20 minutes of running time, it is worth it considering the fact that the track runs through a national park. Another proposal is to sensitise the railway staff and give every train driver a high frequency whistle to alert the elephants and to keep them away from the track. Despite their huge fan-like ears, elephants can hear only high frequency sounds.

Another suggestion is to build trenches along the track to prevent elephants from walking onto the track. It is also suggested that ridges along the track be levelled out in order to facilitate free movement for the animals. In the historic city of Heidelberg in Germany, signs warn motorists to stop their cars to allow frogs to cross the road. No motorists dare break this rule, and drivers apparently are known to stop and actually assist the forgs in crossing the busy road. Rajaji Park is the last bastion where elephants still survive in north west India. Surely, it is not too much to ask that we allow these majestic animals to live With dignity and without fear.
Rashmi Sehgal

(b) Examine the following notes. (You should read the report again before examining the notes.)

1. Problem of elephnats :
(i) The Rajaji National Park railway track, a killer track.
(ii) Elephants frequently get killed and maimed.

2. Proposals to save the animals :
(i) the area to be declared a caution zone where maximum speed to be 20 kmph.
(ii) drivers to be given high frequency whistles to alert elephants.
(iii) trenches to be built and ridges to be levelled out along the track.
(iv) in Heidelberg in Germany cars stop for frogs to cross to the road.

CHSE Odisha Class 12 English Writing Note-making and Summarizing

3. Appeal :
Let these animals live with dignity and without fear.

(c) Summary:
The following in the summary of the report in (a). But there are blanks for you to fill in. Fill in the blanks by re-reading the report and the notes. Remember each dash ( ) stands for a single word only.

The ________ old ________ railway track has turned into a ________ track, where elephants get ________ and ________ very ________. To save these ________ from ________ this park area should be declared ________, ________ , ________ where trains should ________ maximum at a ________, ________ 20 kmph. ________ should be given a ________, ________,________ to keep elephants away ________, ________, ________. The other measures should include ________, ________, ________and ________, ________, ________ along the track. This is not much as ________, ________ in Germany cars stop for ________ to ________, ________, ________. We should let these ________,________,________,________.

Answer:
The 100 year old Rajaji National Park railway track has turned into a killer track, where elephants get killed and maimed very frequently. To save these elephants from death, this park area should be declared a caution zone, where trains should run maximum at a speed of 20 kmph. Drivers should be given a high frequency whistles to keep elephants away from the tracks. The other measures should include trenches along tracks and leveling of ridges along the tracks. This is not much as in Heidelberg in Germany -cars stop for frogs to cross the road. We should let these animals live with dignity.

Activity – 3

Here is a report about jailbreaks in Odisha. Read it carefully, paying particular attention to the various recommendations made by the jail staff and the police.

a. The Report

Lax Security leads to Odisha, Jail breaks

There is little security in Odisha jails as has been shown by the spurt in jailbreaks in the recent years. Altogether 72 prisoners, undertrials and convicts have escaped from various jails in seven major jailbreaks during the last five years. A senior jail staff blames the Government of Odisha for neglecting the jails. Officers have recommended the introduction of closed circuit televisions in the prisons along with very high frequency communication systems as a part of modernisation of the prisons.

They have also asked for the old-fashioned 410 musket rifles to be replaced with 303 rifles with catridges to deal with prison riots. Police say that a nexus between jail staff and prisoners cannot be ruled out. The recent incident at Kodala jail clearly indicates that the jail staff, indeed, help prisoners to escape, say the police. If the jail staff are more alert, such incidents can be averted.
H. Mohanty

b. Notes
The following are the main points of the report. Notice that there are blanks in the notes for you to fill in. Complete the notes by filling in the blanks.

Lax Security Leads to Odisha jailbreaks

Topic : Little jail security in Odisha as shown by jailbreaks

Recommendations to improve jail security :
a. by ____________.
i. Government to improve jail conditions.
ii. __________ and __________ to be introduced.
iii. _____________________________.
b. by ________________.
i. No nexus between jail staff and ___________.
ii. _____________________________.

Recommendations to improve Jail Security
(a) by modernisation
(i) Government to improve jail condition
(ii) Closed-circuit televisions and high-frequency communication systems are to be introduced.
(iii) 410 musket rifles must be replaced by 303 rifles with cartridges.
(b) by prevention
(i) No nexus between jail staff and prisoners be allowed
(ii) Jail staff must be more alert to avert escape of prisoners.

c. Summary
Basing on the above notes, write a brief summary of the report to be faxed to the Home Ministry in New Delhi.
Summary :
Jailbreaks in Odisha are a result of lax security. Jail officials blame the government for neglecting jails, which need modernisation by the introduction of closed circuit televisions, high frequency communications system and replacement of the musket rifles by 303 rifles with cartridges. They also add that by preventing any nexus between jail officials and prisoners and by remaining ever alert, such incidents can be averted.

CHSE Odisha Class 12 English Writing Note-making and Summarizing

Activity – 4

Here is another report. It is about genetically modified food. Read it carefully while paying attention to the following questions.
How is food genetically modified ? What are the advantages and disadvantages of genetically modified food?
a. The report

Watch out for genetically modified food

What is genetical engineering and why are consumer groups up in arms against such genetically modified foods or gene foods ? Well, to put in a nushell, it is a process of extracting genes bearing a specific, hereditary trait from one organism and artificially inserting them into a completely different organism. There are several possible benefits from such genetic engineering.

You could have foods whose nutritional values are enhanced. Scientists, for example, are reported to be working on iron- and vitamin-fortified rice. Similarly, you could develop crops that are resistant to pests and give higher yields, or those that survive extreme weather conditions. You could even provide edible vaccines through such engineering.

But, on the other hand, when you start tinkering with nature, you could also be exposing yourself to unknown and unforeseen health and environment risks, which may not be immediately apparent, but in the long run turn out to be not just hazardous, but uncontrollable. Currently, the known health risks from genetically modified foods are the possibility of food allergies and increased resistance to antibiotics. However, in the absence of long term safety testing, no one can know for certain what their harmful effects may be.

Besides, growing genetically modified crops on a large scale can have certain serious implications for bio-diversity, wild-life, balance of nature-and environment. Because of these questions consumer groups around the globe are now forcing governments to introduce mandatory labelling of genetically modified foods. Consumers have a right to information, safety and choice. And labelling gives them the choice to buy or reject genetically modified foods. Puspa Girimaji

b. Notes
Complete the notes given bleow.

Watch out for Genetically modified Foods

1. What is genetical engineering ?
_____________________________
2. What are the advantages of genetically modified foods ?
i. _____________________________
ii. _____________________________
iii. _____________________________
3. What are their disadvantages ?
i. : _____________________________
ii. : _____________________________
4. What do the consumer groups around the world demand ?
i. _____________________________
ii. _____________________________

c. The Summary
Ans. You are a junior scientist in the RRL, Bhubaneswar. You are interested in genetically modified foods and want to preserve the contents of this report for your future use. For this purpose, write a brief summary of the report.

CHSE Odisha Class 12 English Writing Note-making and Summarizing

(b) Notes

Question 1.
What is genetical engineering ?
Answer:
Genetical engineering is the method by which the genes of one organism having a particular trait is artificially inserted into another organism.

Question 2.
What are the advantages of genetically modified foods ?
Answer:
(i) Nuritional value of food can be increased.
(ii) Crops resistant to pests or high yielding crops or those surviving extreme weather conditions can be developed.
(iii) Edible vaccines can be developed.

Question 3.
What are their disadvantages ?
Answer:
(i) allergic to food
(ii) resistant to antibiotics
(iii) have serious implications for bio-diversity, wild-life balance of nature and environment.

Question 4.
What do consumer groups around the world demand ?
Answer:
(i) labelling of genetically modified foods
(ii) right to information and choice

(c) The Summary :
You are a junior scientist in the RRL, Bhubaneswar. You are interested in genetically modified foods and want to preserve the contents of this report for your future use. For this purpose, write a brief summary of the report. Gene foods- Genetically modified food-stuffs are produced by genetical engineering. This is a process by which genes of one organism, possessing a particular hereditary trait is extracted and then inserted artificially into a different organism.

This makes it possible to increase the nutritional value of food, develop high-yielding pest resistant crops as well as crops suited to extreme weather conditions. Yet the process could adversely affect the environment and create health hazards like food allergies and resistance to antibiotics. Consumer groups are therefore lobbying to make it mandatory for gene foods to be labelled, thereby protecting the consumers right of information and choice.

CHSE Odisha Class 12 English Writing Note-making and Summarizing

Activity – 5

Read the following news report and write a summary of it in about 60 words. Your summary should include information about the following:
The manner in which (i) patients are duped (ii) the doctors and others are benefited. It has been reported that in Cuttack, Sambalpur and Rourkela doctors are duping illiterate village patients by prescribing cheap and false medicines. This is facilitated by the nexus between doctors, medicines shops and drug inspectors. Doctors ask patients to buy medicine from specific shop(s) near hospitals and clinic which drug inspectors seldom check. Thus, each earns profit besides this.

You may make notes on the important points in the box beside the report. Begin your summary thus :
“It has been reported that ………………………………………………………. ”
Doctors duping patients
From our correspondent

Berhampur:
Jan. 13, Though medicine has advanced by leaps and bounds, the poor villagers are not educated to distinguish between genuine and fake medicines, letting doctors, both Government and private, force them to buy fake medicines and earn huge amounts in the bargain. Cases of doctors duping the patients in this manner has come to light in Cuttack, Sambalpur and Rourkela.

The doctors in collusion with certain medical shop owners prescribe cheap quality medicines to the patients and insist that they buy them from specified shops. Medical shops are run in clinic and hospital compounds, forcing patients to buy medicines there. The doctors even get additional return like letter pads, in the form of gifts, from these shops. Drug Inspectors are allegedly involved as they are rarely seen checking these shops.

Doctors duping patients:
Ans. It has been reported that illiterate, uneducated villagers are being duped by doctors in Cuttack, Sambalpur and Rourkela. This is facilitated by a nexus between doctors, medicine shops and drug inspectors. Doctors prescribe cheap or fake medicines and ask the illiterate patient to buy it from specific shops near their hospitals and clinics which drug inspectors seldom check. Thus each one profits from this. Besides, doctors also get gifts from the shops.

CHSE Odisha Class 12 English Writing Note-making and Summarizing

Activity – 6

Read the following passage on ‘Indian Bamboo’ and write notes on it. Then write a summary of the whole passage in not more than 5 paragraphs.

Indian Bamboo

Grown extensively in the north-east and in the Western Ghats, bamboo covers nearly ten million hectares of India’s forest area. More than one hundred species, ranging from the gigantic 30-to-40 metre tall Dendrocalamus giganteus to the one-metre high Arundinaria densifolia with an eight millimetre girth, are found in the country. We produce about 3.2 million tonnes of bamboo annually. Though more than half the bamboo produced in India is turned into paper, the plant has other uses too-for weapons, tools and as food and construction material.

The Monpas of Assam build suspension bridges with bamboo and in Bihar Bamboo is replacing steel in tube well pipes because it is cheaper, rust-free and more durable. Viklang Kendra, a rehabilitation centre for the handicapped in Allahabad, makes artificial limbs from bamboo which are lighter and cheaper than conventional prostheses. Pickled or stewed bamboo shoots are regarded as delicacies in some parts of the country. The fleshy fruits of the ‘muli’ bamboo of Assam are eaten raw or cooked.

During droughts, it seeds are eaten by people as a substitute for rice. Tabasheer’ or ‘banslochan’ a fine siliceous matter found in the stem of the bamboo is used in Ayurvedic drugs to treat cough and asthma. Associated with several myths, the bamboo is often wershipped to ward off evil spirits. In Bengal during ‘Mark Sankaranthi’ people pray to bamboo as ‘vastu the abode of God. Adivasis in some regions plant bamboo on the outskirts of their village to protect them from their enemies.

Even as new uses are being found for the bamboo-scientists are Forest Research Institute, Dehra Dun, are working on bamboo reinforced cement concrete and the extraction, of diesel fuel from the plant’s many-jointed stem. India’s bamboo reserves are slowly dwindling, unfortunately, efforts to cultivate bamboo on a large scale have so far not succeeded.
Padma Sastry

1. Growth :
(i) grown extensively in north-east and Western Ghats
(ii) covering ten million hectares of country’s forest area
(iii) more than one hundred species
2. Size and production :
(i) 30 to 40 metre tall
(ii) about 3.2 million tonnes annually
3. Uses :
(i) paper manufacturing
(ii) making weapons, tools
(iii) making construction materials and artificial limbs
4. Food :
(i) pickled or stewed shoots
(ii) fleshy fruits of the ‘muli’ bamboo (eaten raw or cooked)
(iii) seeds
5. Drug :
a selicious matter in bamboo stem used in Ayurvedic drugs to treat cough and asthma.
6. Myths :
(i) worshipped to drive away evils spirits
(ii) ‘vastu’, the abode of God
(iii) planting bamboo by Adivasis on the outskirts of villages for protection from enemies.
7. New uses :
extraction of diesel fuel

CHSE Odisha Class 12 English Writing Note-making and Summarizing

Summary :
India produces 3.2 million tonnes of bamboo every year. Extensively grown in the north-east and the western ghats, bamboos cover ten million hectares of India’s forest and contain more than one hundred varieties. Mostly used to produces paper, bamboos are also used as weapons, tools, construction material as well as for building bridge, as tube well pipes and even as artifical limbs. Besides, bamboo shoots, fruits, seeds are consumed as food in different places and by different people.

In addition the siliceous matter found in its stem is used as medicine.Bamboo is also endowed with mythical and religious significance. New uses like using it in reinforcing concrete and extracting diesel from its stem are also being worked on by scientists. However, bambo resources are gradually depleting and simultaneously, efforts to cultivate it on a large scale has failed.

CHSE Odisha Class 12 English Grammar Phrasal Verbs

Odisha State Board CHSE Odisha Class 12 Invitation to English 4 Solutions Grammar Phrasal Verbs Textbook Activity Questions and Answers.

CHSE Odisha 12th Class English Grammar Phrasal Verbs

Phrasal verbs are characterised by the following :

They consist of two and only two items. The first is an item which on its own functions as a verb and the second is an adverbial particle.
Put aside = forget
Put (verb) + aside (adverbial particle)
We should put aside our differences and make a new beginning.
Break down = stop because of a mechanical fault.
break (verb) + down (adverbial particle)
His can broke down on the way.

These verbs can be either transitive of intransitive. For example,
Fall through = Fail (intransitive)
My plans fell through.
Turn down = reject (transitive)
I turned down his request.

In some cases, the same phrasal verb can be used both as a transitive and as an intransitive verb. For example,
Work out = solve (transitive)
They have worked out all these sums in one hour.
= go on well or otherwise (intransitive)

Nothing worked out well after the new principal took over.
(i) If the direct object is a noun or a noun-phrase, it can be placed either before or after the adverbial particle. For example,
My sister gave away the books.
My sister gave the books away.
(ii) If the object happens to be a very long and complicated noun phrase, it should come only after the adverbial particle. She gave away all these rare books she had bought during the last five years.
(iii) If the direct object happens to be a pronoun it can come only before the adverbial particle. For example,
My brother gave up it. (Incorrect)
My brother gave it up. (Correct)

CHSE Odisha Class 12 English Grammar Phrasal Verbs

Phrasal – Prepositional verbs
Those verbs consist of three words in their base form but prepositional verbs and similarly phrasal verbs consist of only two words.

Prepositional – Phrasal verbs
Break in upon = disturb, interrupt
A continuous loud noise on the road broke in upon our discussion.

Prepositional verbs.
My friend is done for.

Phrasal verb
(i) Intransitive
The roof of that house caved in after the heavy rainfall.
(ii) Transitive
He looked into the matter.

Look at the sun diagram below and make ten phrasal verbs by combining the verb “look” with the other items.

CHSE Odisha Class 12 English Grammar Phrasal Verbs

Now make meaningful sentences using the ten phrasal verbs.
Answers
1. Mother looks after the household affairs.
2. I am looking forward to getting a letter from my father.
3. The police are looking into the case.
4. He looked over the surface and found nothing.
5. After scoring 10,000 run, he never looked back.
6. We shouldn’t look down on the poor.
7. Look out. There might be snakes here.
8. I looked through the pages to find the appropriate word.
9. The child looked to the facial expression of its mother.
10. He looked upto him for help, but in vain.

CHSE Odisha Class 12 English Grammar Phrasal Verbs

Activity- 1
See how many phrasal verbs you can make in the following grid by joining the verbs in the left column with the prepositions or adverbial particles on the topmost now. If a phrasal verb is possible, mark the sequare with a number and write an example sentence beneath the grid. (One has been done for you as an example.)

about at by for from in of out to with
break 1
bring 2
cut 3
get 4
give 5
keep 6
let 7
put 8
set 9
take 10

1. The thieves broke in through the kitchen window.
2. The Publisher brought out the book in time
3. Don’t cut in while they are talking.
4. He could easily get at the point in issue.
5. The Soldiers gave in unconditonally.
6. In our country the traffic keeps to the left.
7. He let out a portion of his flat (on rent).
8. The firemen put out the fire quickly.
9. The winter has already set in.
10. He has taken to smoking.

Activity- 2
Choose a verb from box A and a preposition or adverbial particle from box B. Use them in the blank spaces of the sentences given below :

A B
brush brought away away
catch called down down
gave cut off off
let get on on
put gone up up

(i) Father __________  ___________ has our headmaster yesterday.
(ii) This milk has ______________  ___________.
(iii) Some learners _______________ ______________ very quickly.
(iv) Our players have ___________ us ___________.
(v) I have to ___________ ___________ my English.
(vi) He was ___________ ____________ in a remote village.
(vii) The match has been ______________ ___________ till next week.
(viii) His cough __________ __________ his hiding place.
(ix) it has been a busy day; i need to __________ __________ for a while.
(x) I am running short of money: I must _____________ _______________ my expenses.

Answers
(i) called  on
(ii) gone  down
(iii) catch  up
(iv) brought…. off
(v) brush  away
(vi) brought up
(vii) put  off
(viii) gave  away
(ix) get  away
(x) cut  down

CHSE Odisha Class 12 English Grammar Phrasal Verbs

Activity- 3
Match the phrasal verbs in column A with their meanings given in column B. The first one has done for you.

A B
1. call off a. become airborne
2. carry on b. boastfully display
3. come across c. Cancel
4. fall out d. continue
5. go through e. end a telephone call
6. hang up f. examine carefully
7. show off g. have an argument
8. take off h. meet by chance
9. turn down i. reject
10. turn off j. disconnect a switch

Answer:

1 2 3 4 5 6 7 8 9 10 Phrasal Verbs
c d h g f e b a i j Put the meaning in this row

Use the above phrasal verbs in meaningful sentences.
1 . The meeting was called off.
2. The workers carried on their work till evening.
3. I came across an old photograph of my grandmother’s.
4. My neighbours never: fall out with me.
5. The police are going through the case records.
6. The disease hung up and he was treated by a doctor.
7. We should never show off.
8. He took off his shoes and entered inside.
9. The manager turned down my request.
10. He turned off the switches and went to bed.

Use Of Some Phrasal Verbs

Add up = find the sum of
He made a mistake in adding up in figures

Back out =fail to keep a promise; withdraw from a promise or understanding
He promised to help me compute my data, but later he backed out

Back up = support
These days it is difficult to get a top job unless you have a minister to back you up.

Barge into = (i) intrude
We were discussing something when he suddenly barged in.
(ii) interrupt clumsily.
You should not barge into other people’s conversation like this.

CHSE Odisha Class 12 English Grammar Phrasal Verbs

Bear out =support, confirm
I hope Dr. Joseph will bear me out if I say that it is a very useful project.
The facts gathered by you do not bear out your hypothesis.

Bear up =be brave, not show feelings of sorrow or despair.
A truly dedicated scientist would bear up well against all academic opposition.

Blow out=(i) be destroyed (said of tyre and electrical appliances)
(a) I’m late because one of my tyres blew out.
(b) Because of a fault in the electric boiler the fuse blew out in the middle of the experiment.
(ii) put out
The wind blew out all the candles soon after the table was set for dinner.

Blow up =(i) explode
If you light a match here, the whole laboratory will blow up.
The captain ordered the soldier to blow up the bridge.
(ii) become very angry
My supervisor blew up when he came to know that the explosion in the laboratory was due to my carelessness.

Break down=(i) analyze into details
He just gave me the total of his expenses. He did not want to break them down into food, transport, and so on.
(ii) stop because of a mechanical fault
His car broke down on the way.
(iii) give way to one’s feeling
Mrs Joseph broke down and started weeping when we told her the news.

Break out =(i) start suddenly
A big riot broke out during the night.
(ii) escape
Several prisoners have broken out of prison again.

Break up =(i) decompose, split, break into small pieces.
The ship broke up during a violent storm.
(ii) end, disperse.
When is the meeting likely to break up?

Bring down= (i) cause to fall
He was awarded a medal for skill fully bringing down a number of hostile aircrafts.
(ii) lower
The government is doing its best to bring down the price of medicines

Bring forth = Produce, give birth to
He brought forth a brilliant suggestion during the discussion yesterday.

Bring forward = Produce, supply
He tried to argue his case but brought forward no evidence in support of his argument.
Can you bring forward any proof of what you have said?

Bring out= (i) publish
I hope the publishers will soon bring out his new book on nuclear chemistry.
(ii) produce, cause to appear
He is trying to find out whether the use of certain photo-electric devices can bring out mango blossoms a month earlier than usual

Bring up= introduce into a discussion
May I just bring up one small point before the Chainman closes the discussion?

Brush up= Study or practice something in order to revive one’s knowledge or skills
If you are going to Germany, you should brush up your German.

Build up= develop, cause to grow
Within five years he built up an excellent business and very good reputation.

CHSE Odisha Class 12 English Grammar Phrasal Verbs

Call off= (i) withdraw, stop
The strike will perhaps be called off tomorrow.
(ii) order soldiers, policemen, etc. to stop
After an hour’s encounter with the smugglers, the inspector called the
policemen off.

Call out= (i) summon
The army had to be called out to restore law and order.
(ii) read out in a loud voice.
Would you please call out the names of the successful candidates?

Catch on= become popular
His new song caught on very fast.

Carry out= (i) give effect to, put into practice
It is not enough to make plans; you should know how to carry them out.
(ii) perform
Experiments carried out at Oxford have shown that ants can make their way
over tough ground with unerring accuracy towards their nest.

Cave in= fall down, collapse
The roof of that house caved in after the heavy rainfall.

Come down= (i) become lower or cheaper
The price of gold is not likely to come down this year.
(ii) lose dignity or social position.
Since that unprovoked quarrel with his neighbour he has come down in the eyes of his friends.

Come out = be published
His book on nuclear chemistry has come out now.

Come up = begin to grow
The seeds I sowed last week haven’t come up yet.

Cool down = become calm.
He is trrrible speaker; he needs half an hour to warm up and then two hours to cool down.

Cut off = disconnect, remove
After five minutes of conversation the operator suddenly cut us off.

Light up= (i) to apply flame to a cigarette, a cigar or a stove
He sat comfortably in one of the beautiful arm chairs and then lit up one of his expensive cigars.
(ii) brighten
Her face lit up with a smile for a minute and then she sank again into an endless gloom.

Lock out= (i) lock the door from inside so as to prevent someone from entering
The warden said that he would lock us out if we did not return till 11 p.m.
(ii) lose the key and thus be stopped from entering I was locked out last night and was compelled to break the lock.

Lock up=(i) lock doors properly
Lock up the rooms properly before you go out.
(ii) make safe by placing in a locker or a box etc.
You must lock up all these confidential documents before you go.
(iii) imprison
The student leaders were locked upon for their acts of violence.

Look up= (i) search for (a word in a dictionary, facts in a reference book, etc.)
Look up this word in the dictionary.
You could look up some of these details in an encyclopedia.
(ii) pay a visit to someone, call on
Would you please look him up when you are in Kolkata next month?
Look me up next time you’re in London.
(iii) improve in price or prosperity.
The shares of the petro-chemical industry in India have started looking up now.
Business conditions are beginning to look up.

Make out= Understand
I cannot make out what he says.
Your handwriting is so bad that I can hardly make it out.

CHSE Odisha Class 12 English Grammar Phrasal Verbs

Make up= (i) make good
It is impossible for him to make up the losses he sufferered last year.
(ii) invent
I don’t think what he says is true. I think he has made up this story.
(iii) apply cosmetics
No sensible girl would like to make herself up in public.

Pass out= (i) distribute
The teacher passed the examination papers out.
(ii) distribute generously as a gift.
You can save a lot of money if you stop passing out drinks.
(iii) faint
Mrs Jones passed out when she heard the news of her son’s death.

Patch up= settle
They have patched up their differences now.

Pick out = select
All these books are equally good. It is difficult to pick out any one them.

Pick up= (i) collect, stop to give a lift to
I will pick you up at 2 o’clock.
Please do pick up, my children on your way.
(ii) take hold of and lift
Pick up all these books and files and take them to my study room.
(iii) learn without taking lessons
He did not learn French in school, he picked it up during his stay in Paris.
(iv) recover
His health picked up after a month at the hill station.
(v) increase, accelerate
The bus moved slowly at the beginning but picked up spread later.

Pile up = (i) accumulate
He is on leave these days and so his work is piling up.
(ii) crash into each other
Several cars piled up on this road during the fog yesterday.

Pin down = be precise about
I hate that man but I find it difficult to pin down the reason for it.

Put across = convey
In spite of his best efforts, he could not put across his ideas to the audience.

Put aside = (i) save
She has put aside a large sum of money.
(ii) disregard, ignore
He put aside all your valuable suggestions.

Put forward = advance, explain something and ask people to consider it.
When Darwin put forward his theory of evolution, he met with a lot of opposition.

Put in = (i) submit
Have you put in an application for that job?
(ii) do, perform
He will be paid a handsome allowance for putting in an extra hour of work every evening.

Put off = delay, postpone
For diplomatic reasons, the Minister put off his journey for about a week.

CHSE Odisha Class 12 English Grammar Phrasal Verbs

Put out = (i) blow out, extinguish, switch off
At 10 p.m. the nurse drew the curtains and put out the lights.
(ii) issue, publish
The government has put out an advertisement inviting applications for the post.
The Ministry of Finance has put out a pamphlet giving details of the new regulations.

Put up = (i) lodge and entertain.
My friend can put you up for the week-end.
(ii) take up one’s lodging at
Where are you going to put up during your stay in London?
He put up at an inn for the night.

Rally round = make a joint effort to help at a time of difficulty.
All his colleagues rallied round him when his officer wanted to suspend him.

Ring in = Celebrate the arrival of
Ring out the old and ring in the new.

Ring off = replace the receiver, end the telephone call.
I am sorry I will have to ring off now. I have an important visitor waiting for me in the drawing room.

Ring out = celebrate the departure of
Ring out the old and ring in the new.

Ring up = call someone on phone
Please ring me a bit later.
He does not want people to ring him up after 11 p.m.

Rope in = persuade a person to join a movement, a project etc.
You will have a better chance of success if you can rope in some more talented persons like him.

Run away = (i) steal and disappear
The laboratory assistant ran away with all the expensive chemicals.
The servant ran away with all her jewels.
(ii) recede, go away from.

MultipIe Choice Questions (MCQs) with Answers

Question 1.
He _________ a brave fight.
(A) put up with
(B) put up
(C) put down
(D) put off
Answer:
(B) put up

Question 2.
We need two players to ____________ the team.
(A) make out
(B) make of
(C) made from
(D) make up
Answer:
(D) make up

Question 3.
His plan __________.
(A) fell through
(B) fell down
(C) fell off
(D) fell upon
Answer:
(A) fell through

Question 4.
He always _________ late.
(A) turns out
(B) turns down
(C) turns up
(D) none of these
Answer:
(C) turns up

CHSE Odisha Class 12 English Grammar Phrasal Verbs

Question 5.
The strike has been ___________.
(A) called out
(B) called off
(C) called in
(D) called upon
Answer:
(B) called off

Question 6.
It is high time the caste system was ___________.
(A) done away with
(B) done for
(C) done out
(D) none of these
Answer:
(A) done away with

Question 7.
It is very difficult for me to __________ early.
(A) get down
(B) get over
(C) get up
(D) get on
Answer:
(C) get up

Question 8.
Winter has ___________.
(A) set out
(B) set in
(C) set up
(D) set out for
Answer:
(B) set in

Question 9.
We will ___________ you in your hour of crisis.
(A) stand out
(B) run down
(C) bring up
(D) stand by
Answer:
(D) stand by

Question 10.
The old building has been ___________.
(A) thrown out
(B) fallen out
(C) pulled down
(D) pulled up
Answer:
(C) pulled down

Question 11 .
My brother has _________ a temple.
(A) made up
(B) set up
(C) put up with
(D) none of these
Answer:
(B) set up

Question 12.
I cannot,___________ what you say.
(A) make from
(B) spring up
(C) make out
(D) make for
Answer:
(C) make out

CHSE Odisha Class 12 English Grammar Phrasal Verbs

Question 13.
A horde of robbers __________ him.
(A) got on
(B) kept on
(C) set upon
(D) made away with
Answer:
(C) set upon

Question 14.
This factory ___________ 100 cars a day.
(A) turns out
(B) makes up
(C) drops in
(D) draws on
Answer:
(A) turns out

Question 15.
I shall ___________Kolkata tomorrow.
(A) go off
(B) make for
(C) set out for
(D) none of these
Answer:
(C) set out for

Question 16.
The President _______________ the people to serve their country.
(A) called in
(B) called on
(C) called upon
(D) called out
Answer:
(C) called upon

Question 17.
The girl _________ in the middle of the speech.
(A) fell off
(B) broke off
(C) broke out
(D) broke in
Answer:
(B) broke off

Question 18.
He finds himself ________ from the outside world.
(A) get down
(B) do out
(C) cut off
(D) break off
Answer:
(C) cut off

CHSE Odisha Class 12 English Grammar Phrasal Verbs

Question 19.
The house is on fire, __________the fire-brigade at once.
(A) call out
(B) look up
(C) look down
(D) call in
Answer:
(D) call in

Question 20.
________your expenditure on smoking.
(A) cut off
(B) put out
(C) put down
(D) cut down
Answer:
(D) call in

BSE Odisha 10th Class Physical Science Solutions Chapter 2 ଅମ୍ଳ, କ୍ଷାରକ ଓ ଲବଣ

Odisha State Board BSE Odisha 10th Class Physical Science Solutions Chapter 2 ଅମ୍ଳ, କ୍ଷାରକ ଓ ଲବଣ Textbook Exercise Questions and Answers.

BSE Odisha Class 10 Physical Science Solutions Chapter 2 ଅମ୍ଳ, କ୍ଷାରକ ଓ ଲବଣ

Question 1.
ଗୋଟିଏ ଦ୍ରବଣ ଲାଲ୍ ଲିଟ୍‌ସ୍‌କୁ ନୀଳରେ ପରିଣତ କରେ, ଏହାର pH ସମ୍ଭବତଃ ହୋଇଥିବ :
(a) 1
(b) 4
(c) 5
(d) 10
ଉ-
(d) 10
BSE Odisha Class 10 Physical Science Solutions Chapter 2 img-1

Question 2.
ଗୋଟିଏ ଦ୍ରବଣ ଅଣ୍ଡା ଏହା ଚୂନପାଣିକୁ ଦୁଧ୍ଵ ଖୋଳପା ଖଣ୍ଡ ଗୁଡ଼ିକ ସହିତ ରାସାୟନିକ ପ୍ରତିକ୍ରିୟା କରି ଏକ ଗ୍ୟାସ୍ ଉତ୍ପନ୍ନ କରେ । କରିଦିଏ । ଏହି ଦ୍ରବଣଟିରେ ଅଛି :
(a) NaCl
(b) HCl
(c) LiCl
(d) KCl
ଉ-
(b) HCl
BSE Odisha Class 10 Physical Science Solutions Chapter 2 img-2

Question 3.
10 ମିଲି ଲି. NaOHର ଏକ ଦ୍ରବଣ 8 ମିଲି ଲି. ପରିମାଣର ଦିଆଯାଇଥ‌ିବା ଏକ HCl ଦ୍ରବଣଦ୍ବାରା ସମ୍ପୂର୍ଣ୍ଣ ଭାବେ ପ୍ରଶମିତ ହୋଇଯାଏ । 20 ମିଲି ଲି. ପରିମାଣର ସେହି NaOH ଦ୍ରବଣକୁ ସମ୍ପୂର୍ଣ୍ଣ ଭାବରେ ପ୍ରଶମିତ କରିବା ପାଇଁ ଆବଶ୍ୟକ ପଡୁଥ‌ିବା ଉକ୍ତ HCl ଦ୍ରବଣର ପରିମାଣ ହେବ :
(a) 4 ମିଲି ଲି.
(b) 8 ମିଲି ଲି.
(c) 12 ମିଲି ଲି.
(d) 16 ମିଲି ଲି.
ଉ-
(d) 16 ମିଲି ଲି.
BSE Odisha Class 10 Physical Science Solutions Chapter 2 img-3

Question 4.
ନିମ୍ନଲିଖତ ଔଷଧଗୁଡ଼ିକ ମଧ୍ୟରୁ କେଉଁଟି ଅଜୀର୍ଣ୍ଣ ରୋଗକୁ ଚିକିତ୍ସା କରିବା ପାଇଁ ବ୍ୟବହାର କରାଯାଏ ?
(a) ପ୍ରତି ଜୈବିକୀ (Antibiotics)
(b) ପ୍ର1ଡ଼|ତାର1 (Analgestic)
(c) ପ୍ରତି- ଅମ୍ଳ (Antacid)
(d) ଡ1ବାଣ୍ଡକଣକ (Antiseptic)
Answer:
(c) ପ୍ରତି- ଅମ୍ଳ (Antacid)

BSE Odisha 10th Class Physical Science Solutions Chapter 2 ଅମ୍ଳ, କ୍ଷାରକ ଓ ଲବଣ

Question 5.
ରାସାୟନିକ ପ୍ରତିକ୍ରିୟା ପାଇଁ ଶବ୍ଦ-ସମୀକରଣ ଏବଂ ତା’ପରେ ସମତୁଲ ସମୀକରଣ ଲେଖ ଯେତେବେଳେ :
(a) ଲଘୁ ସଲ୍‌ଫ୍ୟୁରିକ୍ ଏସିଡ୍ ଜିକ୍ କଣିକାଗୁଡ଼ିକ ସହିତ ରାସାୟନିକ ପ୍ରତିକ୍ରିୟା କରେ ।
(b) ଲଘୁ ହାଇଡ୍ରୋକ୍ଲୋରିକ୍ ଏସିଡ୍ ମ୍ୟାଗ୍ନେସିୟମ୍ ପାତ ସହିତ ରାସାୟନିକ ପ୍ରତିକ୍ରିୟା କରେ ।
(c) ଲଘୁ ସଫ୍ୟୁରିକ୍ ଏସିଡ୍ ଏଲୁମିନିୟମ୍ ଗୁଣ୍ଡ ସହିତ ରାସାୟନିକ ପ୍ରତିକ୍ରିୟା କରେ ।
(d) ଲଘୁ ହାଇଡ୍ରୋକ୍ଲୋରିକ୍ ଏସିଡ୍ ଲୁହାଗୁଣ୍ଡ ସହିତ ରାସାୟନିକ ପ୍ରତିକ୍ରିୟା କରେ ।
Answer:
(a) ଜିଙ୍କ୍ + ଲଘୁ ସଫ୍ୟୁରିକ୍ ଏସିଡ୍ → ଜିଙ୍କ୍ ସଲଫେତ୍ + ତାଜତ୍ରୋଜେନ୍‌
Zn + H2SO4 → ZnSO4 + H2

(b) ମ୍ୟାଗ୍ନେସିୟମ୍ + ଲଘୁ ହାଇଡ୍ରୋକ୍ଲୋରିକ୍ ଏସିଡ୍ → ମ୍ୟାଗ୍ନେସିୟମ୍ କ୍ଲୋରାଇଡ୍ + ହାଇଡ୍ରୋଜେନ୍
Mg + 2HCl → MgCl2 + H2

(c) ଏଲୁମିନିୟମ + ଲଘୁ ସଫ୍ୟୁରିକ ଏସିଡ୍ → ଏଳୁମିନିୟମ୍ ସଳ୍ଫେଟ୍ + ହାଇଡ୍ରୋଜେନ୍
2Al + 3H2SO4 → Al2(SO4)3 + 3H2,

(d) ଲୁହାଗୁଣ୍ଡ + ହାଇଡ୍ରୋକ୍ଲୋରିକ୍ ଏସିଡ୍ → ଫେରିକ୍ କ୍ଲୋରାଇଡ୍ + ହାଇଡ୍ରୋଜେନ୍
2Fe + 6HCl → 2FeCl3 + 3H2

Question 6.
ଆଲ୍‌କହଲ୍ ଏବଂ ପ୍ଲା କୋଜ୍ ଭଳି ଯୌଗିକଗୁଡ଼ିକରେ ମଧ୍ୟ ହାଇଡ୍ରୋଜେନ୍ ଅଛି କିନ୍ତୁ ସେଗୁଡ଼ିକୁ ଅମ୍ଳର ଶ୍ରେଣୀଭୁକ୍ତ କରାଯାଇ ନାହିଁ । ଏହାକୁ ପ୍ରମାଣ କରିବା ପାଇଁ ଏକ ‘ତୁମ ପାଇଁ କାମ’’ ପରୀକ୍ଷା ବର୍ଣ୍ଣନା କର ।
ପର1ଫ୍ରା:
ଗ୍ଲୁକୋଜ୍, ଆଲକହଲ୍, ହାଇଡ୍ରୋକ୍ଲୋରିକ୍ ଏସିଡ୍, ସଲଫ୍ୟୁରିକ୍ ଏସିଡ଼୍ ଇତ୍ୟାଦିର ଦ୍ରବଣ ନିଆଯାଉ ।
ଗୋଟିଏ ଠିପିରେ ଦୁଇଟି କଣ୍ଟା ଲଗାଇ, ତାକୁ ଏକ 100 ମିଲି. ଲି. ବିକର ମଧ୍ଯରେ
ଚିତ୍ରରେ ଦର୍ଶାଯାଇଥବା ଭଳି ଗୋଟିଏ ବଲ୍‌ବ ଓ ଗୋଟିଏ ସୁଇଚ୍ ମଧ୍ୟଦେଇ କଣ୍ଟା ଦୁଇଟିକୁ 6 ଭୋଲ୍ଟ ବ୍ୟାଟେରୀର ଦୁଇ ବିପରୀତ ଅଗ୍ର ସହିତ ସଂଯୁକ୍ତ କରାଯାଉ ।
ବର୍ତ୍ତମାନ ବିକର ମଧ୍ୟକୁ ଅଲ୍‌ କହଲ୍ର ଦ୍ରବଣ ଢଳାଯାଉ ଏବଂ ସୁଇଚ୍ ଦବାଇ ବିଦ୍ୟୁତ୍ ପ୍ରବାହ ଚାଲୁ କରାଯାଉ ।
ପୁନଶ୍ଚ ଗ୍ଲୁକୋଜ୍‌ ଦ୍ରବଣ ନେଇ ଏହି ପରୀକ୍ଷା କରାଯାଉ ।
BSE Odisha Class 10 Physical Science Solutions Chapter 2 img-4
ଉଦାହରଣ:
ଦୁଇଟିଯାକ କ୍ଷେତ୍ରରେ ବଲ୍‌ବ ଜଳିବ ନାହିଁ ।

ହଦ୍ଧତ୍ତ୍ର:
ଏହି ପରୀକ୍ଷାରୁ ଜଣାଗଲା ଯେ, ଉଭୟ ଅଲ୍‌କହଲ୍ ଓ ଗ୍ଲୁକୋଜର ଦ୍ରବଣ ବିଦ୍ୟୁତ ପରିବହନ କରେ ନାହିଁ, କାରଣ ଅଲକହଲ୍ (C2H5OH) ଓ ଗ୍ଲ କୋଡ (C6H12O6) ସହ ସଂଯୋଜ୍ୟ ଯୌଗିକ ହୋଇଥିବାରୁ ଜଳୀୟ ଦ୍ରବଣରେ ବିୟୋଜିତ ହୁଅନ୍ତି ନାହିଁ । ଆଲକହଲ୍ ଗ୍ଲା କୋଜ ହାଇଡ୍ରୋଜେନ ଧାରଣ କରିଥିଲେ ମଧ୍ୟ ସେଗୁଡ଼ିକର ଜଳୀୟ ଦ୍ରବଣ ଅମ୍ଳୀୟ ଗୁଣ ଦେଖାନ୍ତି ନାହିଁ ।

Question 7.
ପାତିତ ଜଳ ବିଦ୍ୟୁତ୍ ପରିବହନ କରିପାରେ ନାହିଁ, କିନ୍ତୁ ବର୍ଷାଜଳ ତାହା କରିପାରେ କାହିଁକି ?
Answer:
(i) ଅମ୍ଳୀୟ ଦ୍ରବଣ, କ୍ଷାରୀୟ ଦ୍ରବଣ ଲବଣ ମିଶ୍ରିତ ଜଳ ବିଦ୍ୟୁତ୍ ପରିବହନ କରିଥାଏ । ପାତିତ ଜଳ ଅମ୍ଳୀୟ କିମ୍ବା କ୍ଷାରୀୟ ନୁହେଁ କିମ୍ବା ଏଥ‌ିରେ କୌଣସି ଲବଣ ମିଶି ନ ଥାଏ । ଏହା ନିଜେ ବିଶ୍ଳେଷିତ ହୋଇପାରେ ନାହିଁ କିମ୍ବା ଏଥ‌ିରେ କୌଣସି ଲବଣର ଆୟନ ନ ଥିବାରୁ ଏହା ବିଦ୍ୟୁତ ପରିବହନ କରିପାରେ ନାହିଁ ।

(ii) କିନ୍ତୁ ବର୍ଷାଜଳରେ ବାୟୁମଣ୍ଡଳୀୟ ଅଙ୍ଗାରକାମ୍ଳ, ନାଇଟ୍ରୋଜେନ୍ ଡାଇଅକ୍‌ସାଇଡ୍ ଓ ସଲ୍‌ଫର୍ ଡାଇଅକ୍‌ସାଇଡ୍ ଆଦି ଗ୍ୟାସ୍ ସହ ମିଶି ଯଥାକ୍ରମେ କାର୍ବୋନିକ୍ ଅମ୍ଳ, ନାଇଟ୍ରିକ୍ ଅମ୍ଳ ଓ ସଫ୍ୟୁରିକ୍ ଅମ୍ଳ ସୃଷ୍ଟି କରେ । ବିଭିନ୍ନ ଲବଣ ଦ୍ରବୀଭୂତ ହୋଇ ରହିଥିବାରୁ ଏହା ବିଘଟିତ ହୋଇ ଆୟନ ଦେଇଥାଏ । ତେଣୁ ଏହା ବିଦ୍ୟୁତ୍ ପରିବହନ କରିଥାଏ ।

Question 8.
ଅମ୍ଳଗୁଡ଼ିକ ଜଳ ଅନୁପସ୍ଥିତିରେ କାହିଁକି ଅମ୍ଳୀୟ ପ୍ରକୃତି ପ୍ରଦର୍ଶନ କରନ୍ତି ନାହିଁ ?
Answer:
ଅମ୍ଳଗୁଡ଼ିକ ଜଳର ଉପସ୍ଥିତିରେ ବିଘଟିତ ହୋଇ H+ ଆୟନ ଦିଅନ୍ତି । ଜଳର ଅନୁପସ୍ଥିତିରେ ଅମ୍ଳଗୁଡ଼ିକ ବିଘଟିତ ହୋଇ H+ ଆୟନ ଦିଅନ୍ତି ନାହିଁ । ତେଣୁ ଜଳର ଅନୁପସ୍ଥିତିରେ ଏହା ଅମ୍ଳୀୟ ପ୍ରକୃତି ପ୍ରଦର୍ଶନ କରନ୍ତି ନାହିଁ ।

BSE Odisha 10th Class Physical Science Solutions Chapter 2 ଅମ୍ଳ, କ୍ଷାରକ ଓ ଲବଣ

Question 9.
A, B, C, D ଓ E ଚିହ୍ନିତ ପାଞ୍ଚଟି ଦ୍ରବଣକୁ ସର୍ବଜନୀନ ସୂଚକରେ ପରୀକ୍ଷା କଲେ pH ଯଥାକ୍ରମେ 4, 1, 11, 7 ଓ 9 ବୋଲି ଜଣାପଡ଼େ । କେଉଁ ଦ୍ରବଣଟି :
(a) ଅମ୍ଳୀୟ ନୁହେଁ କି କ୍ଷାରୀୟ ନୁହେଁ ?
(b) ସବଳ କ୍ଷାରୀୟ ?
(c) ସବଳ ଅମ୍ଳୀୟ ?
(d) ଦୁର୍ବଳ ଅମ୍ଳୀୟ ?
(e) ଦୁର୍ବଳ କ୍ଷାରୀୟ ?
pH ଗୁଡ଼ିକୁ ହାଇଡ୍ରୋଜେନ୍-ଆୟନ ଗାଢ଼ତାର ବୃଦ୍ଧି କ୍ରମରେ ସଜାଇ ଲେଖ ।
Answer:
BSE Odisha Class 10 Physical Science Solutions Chapter 2 img-5
PH ଗୁଡ଼ିକୁ ସେମାନଙ୍କ ହାଇଡ୍ରୋଜେନ ଆୟନର ଗାଢ଼ତାର ବୃଦ୍ଧି କ୍ରମରେ ସଜାଇ ଲେଖିଲେ ହେବ: 11 < 9<7<4< 1 (pH ମୂଲ୍ୟ)

Question 10.
ସମାନ ଲମ୍ବ ବିଶିଷ୍ଟ ମ୍ୟାଗ୍‌ନେସିୟମ୍ ପାତ ପରୀକ୍ଷାନଳୀ A ଓ Bରେ ନିଆଯାଇଛି । ହାଇଡ୍ରୋକ୍ଲୋରିକ୍ ଏସିଡ୍ (HCl) ପରୀକ୍ଷାନଳୀ, Àରେ ଯୋଗ କରାଯାଇଥିବାବେଳେ ଏସିଟିକ୍ ଏସିଡ୍ (CH3COOH) ପରୀକ୍ଷାନଳୀ, ପରୀକ୍ଷାନଳୀରେ ଗ୍ୟାସ୍ ଅଧ‌ିକ ତୀବ୍ର ବେଗରେ ବୁଦ୍ ବୁଦ୍ ହୋଇ ବାହାରିବ ଏବଂ କାହିଁକି ?
Answer:
(i) ପରୀକ୍ଷାନଳୀ ‘A’ ରେ ହେଉଥ‌ିବା ରାସାୟନିକ ପ୍ରତିକ୍ରିୟା :
BSE Odisha Class 10 Physical Science Solutions Chapter 2 img-6

(ii) ପରୀକ୍ଷାନଳୀ ‘B’ ରେ ହେଉଥ‌ିବା ରାସାୟନିକ ପ୍ରତିକ୍ରିୟା :
BSE Odisha Class 10 Physical Science Solutions Chapter 2 img-7

(iii) HCl (ହାଇଡ୍ରୋକ୍ଲୋରିକ୍ ଏସିଡ୍) ଏକ ସବଳ ଅମ୍ଳ, ମାତ୍ର ଏସିଟିକ୍ ଏସିଡ୍ (CH3COOH) ଏକ ଦୁର୍ବଳ ଅମ୍ଳ ।

(iv) ସେଥ‌ିପାଇଁ HCl ଶୀଘ୍ର ବିଘଟିତ ହୋଇ H+ ଓ Cl ଆୟନ ଦେଇପାରେ ମାତ୍ର CH3COOH ଏକ ଦୁର୍ବଳ ଅମ୍ଳ (Organic Acid) ହୋଇଥିବାରୁ ଏହାର ବିଘଟନ ଶୀଘ୍ର ହୁଏ ନାହିଁ ।

(v) ମ୍ୟାଗ୍ନେସିୟମ୍ ଧାତୁ (Mg) ଶୀଘ୍ର HCl ରୁ ହାଇଡ୍ରୋଜେନ୍‌କୁ ବିସ୍ଥାପିତ କରିପାରେ । ସେଥ‌ିପାଇଁ ପରୀକ୍ଷାନଳୀ (A)ରେ ଗ୍ୟାସ୍ ଅଧ୍ବକ ତୀବ୍ର ବେଗରେ ବୁଦ୍ ବୁଦ୍ ହୋଇ ବାହାରେ ।

Question 11.
ତଟକା କ୍ଷୀରର pH, 6 ଅଟେ । ଏହା ଦହିରେ ପରିଣତ ହେଉଥ‌ିବାବେଳେ ଏହାର pH କିପରି ବଦଳୁଥ‌ିବ ବୋଲି ତୁମେ ଭାବୁଛ ? ଉତ୍ତର ବୁଝାଇ ଲେଖ ।
Answer:
(i) , ଦହି ହେଉଛି ଏକ ଏସିଡ୍ । ଏହାର ନାମ ‘ଲାକ୍‌ଟିକ୍ ଏସିଡ୍’ । ଲାକ୍ସୋବାସିଲସ୍ ନାମକ ଅଣୁଜୀବଦ୍ଵାରା ଦୁଧ ଦହିରେ ପରିଣତ ହୋଇଥାଏ ।
(ii) ତଟକା କ୍ଷୀରର pH 6 । ଏହା ଦହିରେ ପରିଣତ ହେଉଥ‌ିବାବେଳେ ଏହାର pH ନିଶ୍ଚିତ ଭାବରେ ଠିରୁ ଜମୁଥୁବ । (ଅମ୍ଳର pH 7ରୁ କମ୍ ହୋଇଥାଏ ।) । କାରଣ କ୍ଷୀର ଅପେକ୍ଷା ଦହି ଅଧିକ ଅମ୍ଳୀୟ । ଅମ୍ଳରେ ପରିଣତ ହୁଏ ।

BSE Odisha 10th Class Physical Science Solutions Chapter 2 ଅମ୍ଳ, କ୍ଷାରକ ଓ ଲବଣ

Question 12.
ଜଣେ କ୍ଷୀରବାଲା ତଟକା କ୍ଷୀରରେ ଖୁବ୍ କମ୍ ପରିମାଣର ଖାଇବା ସୋଡ଼ା ମିଶାଏ ।
(a) ସେ କାହିଁକି ତଟକା କ୍ଷୀରର pH, 6ରୁ ସମାନ୍ୟ କ୍ଷାରୀୟ ଅବସ୍ଥାକୁ ପରିବର୍ତ୍ତନ କରିଦିଏ ?
(b) ଏହି କ୍ଷୀର, ଦହିରେ ପରିଣତ ହେବା ପାଇଁ କାହିଁକି ଅଧ୍ଵ ସମୟ ନିଏ ।
Answer:
ଖାଇବା ସୋଡ଼ା (NaHCO)ର ରାସାୟନିକ ନାମ ‘ ସୋଡ଼ିୟମ୍ ବାଇକାର୍ବୋନେଟ୍ ’’ । ଧାତବ ଲବଣଗୁଡ଼ିକ (ଧାତବ କାର୍ବୋନେଟ୍ ବା ଧାତବ ବାଇକାର୍ବୋନେଟ୍) ସାଧାରଣତଃ କ୍ଷାରୀୟ ହୋଇଥାନ୍ତି । (a) ତଟକା କ୍ଷୀର (pH = 6) ରେ ସାମାନ୍ୟ ଖାଇବା ସୋଡା ମିଶାଇଲେ ତାହା ସାମାନ୍ୟ କ୍ଷାରୀୟ ଅବସ୍ଥା (pH > 7)କୁ ପରିବର୍ତ୍ତିତ ହୋଇଥାଏ । ଏହାଫଳରେ କ୍ଷୀର ସହଜରେ ଛିଣ୍ଡି ଯାଏ ନାହିଁ କିମ୍ବା ନଷ୍ଟ ହୁଏ ନାହିଁ ।

(b)ଦହି ଏକ ଏସିଡ୍ ଯାହାକି ଏକ ଜୈବିକ ଅମ୍ଳ (Organic Acid) । ଏହାର pH, ତଟକା କ୍ଷୀରର pH ଠାରୁ ଯଥେଷ୍ଟ କମ୍ । ଲାକ୍ସୋବାସିଲସ୍ ନାମକ ଅଣୁଜୀବ ଦ୍ଵାରା ତଟକା କ୍ଷୀର ଦହିକୁ ପରିବର୍ତ୍ତିତ ହୋଇଥାଏ । ଏହାଫଳରେ ସୃଷ୍ଟି ହେଉଥ‌ିବା ଲାକ୍‌ଟିକ୍ ଏସିଡ଼, ବେକିଂ ସୋଡ଼ା ସହ ରାସାୟନିକ ପ୍ରତିକ୍ରିୟା କରିଥାଏ । ତେଣୁ କ୍ଷୀର, ଦହିରେ ପରିଣତ ପାଇଁ ଅଧ‌ିକ ସମୟ ଲାଗିଥାଏ ।

Question 13.
ପ୍ଲାଷ୍ଟର ଅଫ୍ ପ୍ୟାରିସ୍‌କୁ ଏକ ଆର୍ଦ୍ରତା-ପ୍ରତିରୋଧ ପାତ୍ରରେ ରଖୁବା ଉଚିତ । କାହିଁକି ବୁଝାଇ ଲେଖ ।
Answer:
(i) ପ୍ଲାଷ୍ଟର ଅଫ୍ ପ୍ୟାରିସ (CaSO4\(\frac { 1 }{ 2 }\)H2O) ଜଳ ସଂସ୍ପର୍ଶରେ ଆସିଲେ ଜିପସମ୍‌ରେ (CaSO4 2H2O) ପରିବର୍ତ୍ତିତ ହୋଇ କଠିନ ହୋଇଯାଏ ।
BSE Odisha Class 10 Physical Science Solutions Chapter 2 img-8

(ii) ସେଥ‌ିପାଇଁ ପ୍ଲାଷ୍ଟର ଅଫ୍ ପ୍ୟାରିସ୍‌କୁ ଆର୍ଦ୍ରତା-ପ୍ରତିରୋଧ ପାତ୍ରରେ ରଖୁବା ଉଚିତ ।

Question 14.
ପ୍ରଶମନୀକରଣ ରାସାୟନିକ ପ୍ରତିକ୍ରିୟା କ’ଣ ? ଦୁଇଟି ଉଦାହରଣ ଦିଅ ।
Answer:
ଯେଉଁ ପ୍ରତିକ୍ରିୟାରେ ଅମ୍ଳ କ୍ଷାରକ ସହ ପ୍ରତିକ୍ରିୟା କରି ଲବଣ ଓ ଜଳ ସୃଷ୍ଟି କରେ, ତାହାକୁ ପ୍ରଶମନୀକରଣ କୁହାଯାଏ ।
ଉଦାହରଣ:
BSE Odisha Class 10 Physical Science Solutions Chapter 2 img-9

Question 15.
ଧୋଇବା ସୋଡ଼ା ଓ ଖାଇବା ସୋଡ଼ାର ଦୁଇଟି ଲେଖାଏଁ
Answer:
ଧୋଇବା ସୋଡ଼ାର ବ୍ୟବହାର:
ବ୍ୟବହାର ଲେଖ ।
(i) ଜଳର ସ୍ଥାୟୀ ଖରତ୍ଵ ଦୂର କରିବା ପାଇଁ ଏହାକୁ ବ୍ୟବହାର କରାଯାଏ ।

(ii) ବୋରାକସ୍ ପରି ସୋଡ଼ିୟମ୍‌ ଯୌଗିକଗୁଡ଼ିକୁ ଉତ୍ପାଦନ ପାଇଁ ଏହା ବ୍ୟବହୃତ ହୁଏ ।

ଖ|ଇବା ପେ|ଡ୍|ରେ ବ୍ୟବହାର:
(i) ଖାଇବା ସୋଡ଼ା (NaHCO3) ଉତ୍ତପ୍ତ ଅବସ୍ଥାରେ ବିଘଟିତ ହୋଇ CO2 (କାର୍ବନ ଡାଇଅକ୍‌ସାଇଡ୍) ବୁଦ୍‌ବୁଦ୍ ଆକାରରେ ଛାଡ଼େ ଓ ପାଉଁରୁଟି, କେକ୍, ବିସ୍କୁଟ୍ ଆଦିକୁ ଫୁଲାଇଦେଇ ନରମ ଓ ସଚ୍ଛିଦ୍ର

(ii) ପେଟରେ ଅମ୍ଳୀୟ ଦୋଷକୁ ଦୂର କରିବାପାଇଁ ଏହା ଔଷଧ ଭାବରେ ବ୍ୟବହାର କରାଯାଏ ।

BSE Odisha 10th Class Physical Science Solutions Chapter 2 ଅମ୍ଳ, କ୍ଷାରକ ଓ ଲବଣ

ପ୍ରଶ୍ନ|ବ୍ଲ1 ଓ ରତ୍ତର:

Question 1.
ତୁମକୁ ତିନୋଟି ପରୀକ୍ଷାନଳୀ ଦିଆଯାଇଛି । ସେଥୁରୁ ଗୋଟିକରେ ପାତିତ ଜଳ ଏବଂ ଅନ୍ୟ ଦୁଇଟିରେ ଯଥାକ୍ରମେ ଅମ୍ଳୀୟ ଦ୍ରବଣ ଏବଂ କ୍ଷାରୀୟ ଦ୍ରବଣ ଅଛି । ଯଦି ତୁମକୁ କେବଳ ଲାଲ୍ ଲିଟ୍‌ସ୍ କାଗଜ ଦିଆଯାଏ, ତେବେ ତୁମେ ପ୍ରତ୍ୟେକ ପରୀକ୍ଷାନଳୀରେ କ’ଣ ଅଛି କିପରି ଚିହ୍ନଟ କରିପାରିବ ?
Answer:
(i) ପ୍ରଥମେ ଲାଲ୍ ଲିଟ୍‌ସ୍ କାଗଜକୁ ପ୍ରତ୍ୟେକ ପରୀକ୍ଷାନଳୀରେ ବୁଡ଼ାଇଲେ, ଯେଉଁ ପରୀକ୍ଷାନଳୀରେ ଲାଲ୍ ଲିଗ୍‌ସ୍ କାଗଜ ନୀଳ ବର୍ଣ୍ଣ ହେବ ତାହା କ୍ଷାରୀୟ ଦ୍ରବଣ ସୂଚାଇବ ।

(ii) ଏହି ନୀଳ ବର୍ଷ ଧାରଣ କରିଥିବା ଲିଟ୍‌ସ୍ କାଗଜକୁ ଅନ୍ୟ ଯେଉଁଥରେ ଏହା ପୁନର୍ବାର ଲାଲ୍‌ବର୍ଣ୍ଣ ଧାରଣ କରିବ, ତାହା ଦୁଇଟି ପରୀକ୍ଷାନଳୀରେ ବୁଡ଼ାଇଲେ କାଗଜଟି ଅମ୍ଳୀୟ ଦ୍ରବଣ ସୂଚାଇବ ।

(iii) ବାକି ପରୀକ୍ଷାନଳୀରେ ନୀଳ କିମ୍ବା ଲାଲ୍ ଲିଟ୍‌ସ୍ କାଗଜକୁ ବୁଡ଼ାଇଲେ ତା’ର ରଙ୍ଗରେ କୌଣସି ପରିବର୍ତ୍ତନ ନ ଘଟିଲେ ତାହା ପାତିତ ଜଳ ବୋଲି ଜଣାପଡ଼ିବ ।

Question 2.
ପିତ୍ତଳ (Brass) ଏବଂ ତମ୍ବା (Copper) ପାତ୍ରରେ କାହିଁକି ଦହି ଓ ଖଟା ଜିନିଷ ରଖାଯାଏ ନାହିଁ ?
Answer:
(i) ଦହି ଓ ଅନ୍ୟାନ୍ୟ ଖଟା ଜିନିଷରେ ବିଭିନ୍ନ ପ୍ରକାର ଅମ୍ଳ ଥ‌ିବାରୁ, ସେଗୁଡ଼ିକ ତମ୍ବା ଓ ପିତ୍ତଳ (Cu + Zn) ପାତ୍ରର ପୃଷ୍ଠ ସହିତ ପ୍ରତିକ୍ରିୟା କରି କପର (II) ଓ ଜିଙ୍କ୍ (II) ଯୌଗିକ ଗଠନ କରନ୍ତି ।
(ii) ଏହି ଯୌଗିକଗୁଡ଼ିକ ମନୁଷ୍ୟ ଶରୀର ପାଇଁ ବିଷ ଭଳି କାର୍ଯ୍ୟ କରୁଥ‌ିବାରୁ ଉପରୋକ୍ତ ପାତ୍ରଗୁଡ଼ିକରେ ଦହି ଓ ଖଟା ଜିନିଷ ରଖାଯାଏ ନାହିଁ ।

Question 3.
ଗୋଟିଏ ଅମ୍ଳ ଗୋଟିଏ ଧାତୁ ସହିତ ରାସାୟନିକ ପ୍ରତିକ୍ରିୟା କଲେ ସାଧାରଣତଃ କେଉଁ ଗ୍ୟାସ୍ ଉଦାହରଣ ସାହାଯ୍ୟରେ ବୁଝାଇ ଦିଅ । ଏହି ଗ୍ୟାସ୍‌ର ଉପସ୍ଥିତି କିପରି ପରୀକ୍ଷା କରିବ ?
Answer:
ଅମ୍ଳ ଧାତୁ ସହ ପ୍ରତିକ୍ରିୟା କଲେ ହାଇଡ୍ରୋଜେନ୍ ଗ୍ୟାସ୍ ନିର୍ଗତ ହୁଏ ।
ଉଦାହରଣ :
ଜିଙ୍କ୍ ଭଳି କ୍ରିୟାଶୀଳ ଧାତୁ ଅମ୍ଳରୁ ହାଇଡ୍ରୋଜେନ୍‌କୁ ଗ୍ୟାସ୍ ରୂପେ ବିସ୍ଥାପିତ କରେ । ଅମ୍ଳର ଅବଶିଷ୍ଟ ଅଂଶ ସହ ଧାତୁ ସଂଯୁକ୍ତ ହୋଇ ଲବଣ ଗଠନ କରେ ।
BSE Odisha Class 10 Physical Science Solutions Chapter 2 img-10

ଗ୍ୟାସ୍‌ର ଉପସ୍ଥିତି ପରୀକ୍ଷା:
ନିର୍ଗତ ଗ୍ୟାସ୍‌କୁ ସାବୁନ ପାଣି ମଧ୍ୟରେ ପ୍ରବାହିତ କଲେ ଦ୍ରବଣ ମଧ୍ଯରେ ଗ୍ୟାସ୍‌ର ଫୋଟକା ସୃଷ୍ଟି ହେବ । ଗ୍ୟାସ୍‌ପୂର୍ଣ୍ଣ ଫୋଟକାଗୁଡ଼ିକ ନିକଟକୁ ଜଳନ୍ତା ମହମବତୀ ଆଣିଲେ ଫୋଟକାଗୁଡ଼ିକ ପପ୍ ଶବ୍ଦ କରି ଫାଟିଯିବ ଏବଂ ମହମବତୀର ଶିଖା ମଧ୍ୟ ଲିଭିଯିବ । ଏଥିରୁ ଜଣାଯାଏ ଯେ ନିର୍ଗତ ଗ୍ୟାସ୍ ହେଉଛି ହାଇଡ୍ରୋଜେନ୍ ।

Question 4.
ଏକ ଧାତବ ଯୌଗିକ À, ଲଘୁ ହାଇଡ୍ରୋକ୍ଲୋରିକ୍ ଏସିଡ୍ ସହ ରାସାୟନିକ ପ୍ରତିକ୍ରିୟା କରି ବୁଦ୍‌ଦନ (effervescence) ସୃଷ୍ଟି କରେ । ନିର୍ଗତ ହେଉଥ‌ିବା ଗ୍ୟାସ୍ ଏକ ଜଳୁଥିବା ମହମବତୀକୁ ଲିଭାଇ ଦିଏ । ଯଦି ଉତ୍ପନ୍ନ ହୋଇଥିବା ଯୌଗିକଗୁଡ଼ିକ ମଧ୍ୟରୁ ଗୋଟିଏ କ୍ୟାଲ୍‌ସିୟମ୍ କ୍ଲୋରାଇଡ୍ ହୋଇଥାଏ, ତେବେ ଏହି ରାସାୟନିକ ପ୍ରତିକ୍ରିୟା ପାଇଁ ସମତୁଲ ସମୀକରଣଟି ଲେଖ ।
Answer:
କ୍ୟାଲ୍‌ସିୟମ୍ କାର୍ବୋନେଟ୍ ଲଘୁ ହାଇଡ୍ରୋକ୍ଲୋରିକ୍ ଏସିଡ଼୍ ସହ ରାସାୟନିକ ପ୍ରତିକ୍ରିୟା କଲେ ବୁଦ୍‌ଦନ ସୃଷ୍ଟି ହେବା ସହିତ କ୍ୟାଲ୍‌ସିୟମ୍ କ୍ଲୋରାଇଡ୍, ଜଳ ଓ ଅଙ୍ଗାରକାମ୍ଳ ଗ୍ୟାସ୍ ଉତ୍ପନ୍ନ ହୁଏ |
BSE Odisha Class 10 Physical Science Solutions Chapter 2 img-11

Question 5.
HCl, HNO3, ଇତ୍ୟାଦି ଜଳରେ ଦ୍ରବୀଭୂତ ହୋଇ ଅମ୍ଳୀୟ ଲକ୍ଷଣ ପ୍ରଦର୍ଶନ କରନ୍ତି, ଆଲ୍‌କହଲ୍ ଏବଂ ଗ୍ଲା କୋଜ୍ ଭଳି ଯୌଗିକଗୁଡ଼ିକର ଜଳୀୟ ଦ୍ରବଣ ଅମ୍ଳୀୟ ଲକ୍ଷଣ ଦେଖାନ୍ତି- ନାହିଁ; କାହିଁକି ?
Answer:
(i) HCl ଓ HNO3, ହେଉଛନ୍ତି ସବଳ ଅମ୍ଳ । ଏଗୁଡ଼ିକ ଜଳରେ ବିଘଟିତ ହୋଇ ସହଜରେ H+ ଆୟନ ଦେଇଥା’ନ୍ତି । ତେଣୁ ଅମ୍ଳୀୟ ଲକ୍ଷଣ ପ୍ରଦର୍ଶନ କରନ୍ତି ।
HCI (aq) → H+ (aq) + Cl (aq)
HNO3(aq) → H+ (ag) + NO3(aq)

(ii) ଆଲକହଲ୍ (C2H5OH) ଏବଂ ଗ୍ଲ କୋଜ୍ (C6H12O6) ପରି ଜୈବିକ ଅମ୍ଳ (organic acid) ସହ ସଂଯୋଜ୍ୟ ଯୌଗିକ ଅଟନ୍ତି, ତେଣୁ ଏଗୁଡ଼ିକ ଜଳରେ ସହଜରେ ବିଘଟିତ ହୋଇ H+ ଆୟନ ଦେଇପାରନ୍ତି ନାହିଁ କିମ୍ବା ଜଳୀୟ ଦ୍ରବଣରେ ବିଦ୍ୟୁତ୍ ପରିବହନ କରନ୍ତି ନାହିଁ । ଏଗୁଡ଼ିକ ହାଇଡ୍ରୋଜେନ୍ ଧାରଣ କରିଥିଲେ ମଧ୍ୟ ଏଗୁଡ଼ିକ ଜଳୀୟ ଦ୍ରବଣରେ ଅମ୍ଳୀୟ ଲକ୍ଷଣ ଦେଖାନ୍ତି ନାହିଁ ।

Question 6.
ଗୋଟିଏ ଅମ୍ଳର ଜଳୀୟ ଦ୍ରବଣ ବିଦ୍ୟୁତ୍ ପରିବହନ କରିପାରେ କାହିଁକି ?
Answer:
ଗୋଟିଏ ଅମ୍ଳ ଜଳରେ ବିଘଟିତ ହୋଇ H+ ଆୟନ ଦେଇଥାଏ । HCl (aq) → H+ (aq) + Cl(aq)
ଅମ୍ଳର ଜଳୀୟ ଦ୍ରବଣରେ ବିଦ୍ୟୁତ୍ ପ୍ରବାହ ଘଟିଲେ H+(aq) ଆୟନଗୁଡ଼ିକ କ୍ୟାଥୋଡ଼ଠାରେ ପହଞ୍ଚାନ୍ତି ଏବଂ ପ୍ରତ୍ୟେକ H+(ag) ଆୟନ କ୍ୟାଥୋଡ଼ରୁ ଗୋଟିଏ ଇଲେକ୍‌ଟ୍ରନ ଗ୍ରହଣ କରି ହାଇଡ୍ରୋଜେନ (H2) ଗ୍ୟାସ୍‌ରେ ପରିଣତ ହୁଏ । 2H+2 → H2 ସେଥ‌ିପାଇଁ ଅମ୍ଳର ଜଳୀୟ ଦ୍ରବଣ ବିଦ୍ୟୁତ୍ ପରିବହନ କରିପାରେ ।

Question 7.
ଶୁଷ୍କ HCI ଗ୍ୟାସ୍ ଶୁଷ୍କ ଲିସ୍ କାଗଜର ବର୍ଣ୍ଣ ବଦଳାଇ ପାରେ ନାହିଁ କାହିଁକି ?
Answer:
HCI ଏକ ସହସଂଯୋଗ୍ୟ ଯୌଗିକ ହୋଇଥିବାରୁ ଶୁଷ୍କ HCI ଗ୍ୟାସ୍ H+ ଆୟନ ଓ Cl ଆୟନକୁ ବିୟୋଜିତ ହୋଇପାରେ ନାହିଁ । ଜାରଣ ହରାଇଥିବା ଇଲେକ୍‌ଟ୍ରନ ଗ୍ରହଣ କରି HCI ଅଣୁ ଗଠନ କରିବା ପାଇଁ H+ ଆୟନର ଉଚ୍ଚଗାଢ଼ତା ବିଶିଷ୍ଟ ଯୁକ୍ତାତ୍ମକ ଚାର୍ଜ Cl ଆୟନ ସହ ସଂଯୁକ୍ତ ହୋଇଥାଏ ।

Question 8.
ଏକ ଅମ୍ଳର ଗାଢ଼ତା ହ୍ରାସ କରିବା ପାଇଁ ପରାମର୍ଶ ଦିଆଯାଇଥାଏ ଯେ ଅମ୍ଳକୁ ଜଳରେ ମିଶାଇବା ଉଚିତ କିନ୍ତୁ ଜଳକୁ ଅମ୍ଳରେ ନୁହେଁ; କାହିଁକି ?
Answer:
ଅମ୍ଳର ଜଳ ସହିତ ମିଶ୍ରଣ ଏକ ତାପ ଉତ୍ପାଦୀ ପ୍ରତିକ୍ରିୟା । ଯଦି ଗାଢ଼ H2SO4 ବା ଗାଢ଼ HCI ରେ ଜଳ ମିଶାଯାଏ, ମିଶ୍ରଣରେ ପ୍ରଚୁର ତାପ ଉତ୍ପନ୍ନ ହେତୁ ମିଶ୍ରଣ ଏପଟେ ସେପଟେ ଛିଟିକି ପଡ଼ିବ ଏବଂ ବେଳେବେଳେ ଅମ୍ଳଥବା କାଚ ପାତ୍ରଟି ଭାଙ୍ଗିପାରେ । ଏଣୁ ଜଳକୁ ଅନବରତ ଭାବରେ ଘାଣ୍ଟୁଥ‌ିବା ଅବସ୍ଥାରେ ଧରେ ଧୂରେ ଗାଢ଼ ଅମ୍ଳକୁ ଜଳରେ ମିଶାଇବା ଉଚିତ୍‌ ।

BSE Odisha 10th Class Physical Science Solutions Chapter 2 ଅମ୍ଳ, କ୍ଷାରକ ଓ ଲବଣ

Question 9.
ଏକ ଅମ୍ଳୀୟ ଦ୍ରବଣର ଲଘୁକରଣ ପ୍ରକ୍ରିୟାଦ୍ଵାରା ହାଇଡ୍ରୋନିୟମ୍‌ (H3O+) ଆୟନର ଗାଢ଼ତା କିପରି ପ୍ରଭାବିତ ହୋଇଥାଏ ?
Answer:
ଅମ୍ଳୀୟ ଦ୍ରବଣର ଲଘୁକରଣ ପ୍ରକ୍ରିୟାଦ୍ଵାରା H+ ଆୟନର ଗାଢ଼ତା ହ୍ରାସ ପାଇଥାଏ । ଅମ୍ଳଟି ଜଳର ଉପସ୍ଥିତିରେ ହିଁ H+ ଆୟନ ଦେଇଥାଏ । H+ + H2O → H3O+ ତେଣୁ H3O+ ଆୟନର ଗାଢ଼ତା ହ୍ରାସ ପାଇଥାଏ ।

Question 10.
ଅଧିକ ପରିମାଣର କ୍ଷାରକ, ସୋଡ଼ିୟମ୍‌ ହାଇଟ୍ରକ୍‌ସାଇଡ୍ ଦ୍ରବଣରେ ଦ୍ରବୀଭୂତ ହେଲେ ହାଇଡ୍ରକ୍‌ସାଇଡ୍ (OH) ଆୟନର ଗାଢ଼ତା କିପରି ପ୍ରଭାବିତ ହୁଏ ?
Answer:
BSE Odisha Class 10 Physical Science Solutions Chapter 2 img-12
ଆୟନ ଦେଇଥା’ନ୍ତି । ତେଣୁ (OH) ଆୟନର ଗାଢ଼ତା ବୃଦ୍ଧିପାଏ ।

Question 11.
A ଓ B ଦୁଇଟି ଦ୍ରବଣ ଅଛି । ଦ୍ରବଣ Aର pH ହେଉଛି 6 ଏବଂ ଦ୍ରବଣ Bର pH ହେଉଛି 8 । କେଉଁ ଦ୍ରବଣରେ ହାଇଡ୍ରୋଜେନ୍ ଆୟନର ଗାଢ଼ତା ଅଧ୍ଵ ? ଏହି ଦୁଇଟି ମଧ୍ୟରୁ କେଉଁଟି ଅମ୍ଳୀୟ ଏବଂ କେଉଁଟି କ୍ଷାରୀୟ ?
Answer:
ଦ୍ରବଣ Aର ହାଇଡ୍ରୋଜେନ ଆୟନର ଗାଢ଼ତା ଅଧିକ । ଦ୍ରବଣ A ଅମ୍ଳୀୟ ଅଟେ । କାରଣ ଏହାର pH < 7 ଏବଂ ଦ୍ରବଣ B କ୍ଷାରୀୟ ଅଟେ କାରଣ ଏହାର pH > 7

Question 12.
H+(ag) ଆୟନଗୁଡ଼ିକର ଗାଢ଼ତା ଦ୍ରବଣର ପ୍ରକୃତି ଉପରେ କି ପ୍ରକାର ପ୍ରଭାବ ପକାଇଥାଏ ?
Answer:
(i) H+(ag) ଆୟନଗୁଡ଼ିକର ଗାଢ଼ତା ବୃଦ୍ଧି ପାଇଲେ ଦ୍ରବଣର pH ର ମୂଲ୍ୟ ଏହାର ଅମ୍ଳୀୟ ପ୍ରକୃତି ବୃଦ୍ଧି ପାଏ । ତେଣୁ ହ୍ରାସ ପାଇଥାଏ ।

(ii) H+(aq) ଆୟନଗୁଡ଼ିକର ଗାଢ଼ତା ହ୍ରାସ ପାଇଲେ ଦ୍ରବଣର pH ମୂଲ୍ୟ ବୃଦ୍ଧି ପାଏ ଏବଂ ଏହାର କ୍ଷାରୀୟ ପ୍ରକୃତି ବୃଦ୍ଧି ପାଏ ।

Question 13.
କ୍ଷାରୀୟ ଦ୍ରବଣଗୁଡ଼ିକରେ ମଧ୍ୟ H+(aq) ଆୟନ ଅଛି କି ? ଯଦି ହଁ, ତେବେ ଏଗୁଡ଼ିକ କ୍ଷାରୀୟ କାହିଁକି ?
Answer:
କ୍ଷାରୀୟ ଦ୍ରବଣରେ H+(aq) ଆୟନ ରହିଥିଲେ ମଧ୍ୟ ଏଗୁଡ଼ିକର ଗାଢ଼ତା କମ୍ ହୋଇଥାଏ ଏବଂ OH(aq)ର ଗାଢ଼ତା ଅଧୂକ ହୋଇଥାଏ । ଦ୍ରବଣର pH ର ମୂଲ୍ୟ 7 ରୁ ଅଧିକ ହୋଇଥିବାରୁ ଦ୍ରବଣ କ୍ଷାରୀୟ ହୋଇଥାଏ ।

Question 14.
ମାଟିର କେଉଁ ଅବସ୍ଥାରେ ଜଣେ କୃଷକ ତା’ର ଜମିରେ କଲିଚୂନ (କ୍ୟାଲ୍‌ସିୟମ୍‌ ଅକ୍‌ସାଇଡ୍ ) କିମ୍ବା ଶମିତ ଚୂନ (କ୍ୟାଲ୍‌ସିୟମ୍ ହାଇଡ୍ରକ୍‌ସାଇଡ୍) କିମ୍ବା ଚକ୍ (କ୍ୟାଲ୍‌ସିୟମ୍ କାର୍ବୋନେଟ୍) ପ୍ରୟୋଗ କରିବ ବୋଲି ତୁମେ ଭାବୁଛ ?
Answer:
(i) ଉଭିଦ ସାଧାରଣତଃ ଅଧିକ ଅମ୍ଳୀୟ ବା କ୍ଷାରୀୟ ମାଟିରେ ବୃଦ୍ଧି ହୋଇପାରେ ନାହିଁ । କାରଣ ମାଟି ତାର ଉର୍ବରତା ହରାଇଥାଏ ।

(ii) ଯଦି କୌଣସି କାରଣରୁ ମାଟି ମଧ୍ଯରେ ଅମ୍ଳର ପରିମାଣ ବୃଦ୍ଧିପାଏ, ତେବେ ତାହାକୁ ପ୍ରଶମିତ କରିବାପାଇଁ କଲିଚୂନ (CaO) କିମ୍ବା ଶମିତ ଚୂନ [Ca(OH2)] ପରି କ୍ଷାର କିମ୍ବା କ୍ୟାଲ୍‌ସିୟମ କାର୍ବୋନେଟ୍ ପରି (CaCO3) ଧାତବ ଯୌଗିକ ମାଟିରେ ପ୍ରୟୋଗ କରାଯାଏ ।

BSE Odisha 10th Class Physical Science Solutions Chapter 2 ଅମ୍ଳ, କ୍ଷାରକ ଓ ଲବଣ

Question 15.
ଯୌଗିକ CaOCl2 ର ସାଧାରଣ ନ|ମ CaOCl, କ’ଣ
Answer:
ଯୌଗିକ CaOCl2 ର ସାଧାରଣ ନାମ ବ୍ଲିଚିଂ ପାଉଡର ।

Question 16.
କେଉଁ ପଦାର୍ଥ କ୍ଲୋରିନ୍ ସହ ରାସାୟନିକ ପ୍ରତିକ୍ରିୟା କରି ବ୍ଲିଚିଂ ପାଉଡ଼ର ଉତ୍ପନ୍ନ କରେ ?
Answer:
କ୍ୟାଲ୍‌ସିୟମ୍ ହାଇଡ୍ରିକସାଇଡ୍ (Ca (OH)2) ବା ଶମିତ ଚୂନ ଓ କ୍ଲୋରିନ୍‌ର ରାସାୟନିକ ପ୍ରତିକ୍ରିୟା ଫଳରେ କ୍ଲିଚିଂ ପାଉଡ଼ର ପ୍ରସ୍ତୁତ ହୁଏ ।
BSE Odisha Class 10 Physical Science Solutions Chapter 2 img-13

Question 17.
ଖରଜଳକୁ ମୃଦୁଜଳରେ ପରିଣତ କରିବା ପାଇଁ ଯେଉଁ ସୋଡ଼ିୟମ୍‌ ଯୌଗିକ ବ୍ୟବହାର କରାଯାଏ, ତା’ର
ନାମ କ’ଣ ?
Answer:
ଖରଜଳକୁ ମୁହୁଜଳରେ ପରିଣତ କରିବା ପାଇଁ ଧୋଇବା ସୋଡ଼ା ବା ସୋଡ଼ିୟମ୍ କାର୍ବୋନେଟ୍ Na2CO3 ବ୍ୟର୍ ର୍ତ୍ବତ ଜରାଯାଏ |

Question 18.
ସୋଡ଼ିୟମ୍‌ ହାଇଡ୍ରୋଜେନ୍ କାର୍ବୋନେଟ୍‌ର ଦ୍ରବଣକୁ ଗରମ କଲେ କ’ଣ ଘଟିବ ? ସମ୍ପୃକ୍ତ ରାସାୟନିକ ପ୍ରତିକ୍ରିୟା ପାଇଁ ସମୀକରଣଟି ଲେଖ ।
Answer:
ସୋଡ଼ିୟମ୍‌ ହାଇଡ୍ରୋଜେନ୍‌ କାର୍ବୋନେଟ୍‌ର ଦ୍ରବଣକୁ ଗରମ କଲେ ସେଥୁରୁ ସୋଡ଼ିୟମ୍‌ କାର୍ବୋନେଟ୍, କାର୍ବନ ଡାଇଅକ୍‌ସାଇଡ୍ ଗ୍ୟାସ୍ ଓ ଜଳ ବାହାରିବ ।
BSE Odisha Class 10 Physical Science Solutions Chapter 2 img-14

Question 19.
ପ୍ଲାଷ୍ଟର ଅଫ୍ ପ୍ୟାରିସ୍ ଓ ଜଳ ମଧ୍ୟରେ ରାସାୟନିକ ପ୍ରତିକ୍ରିୟାକୁ ଦର୍ଶାଇବା ପାଇଁ ଏକ ସମୀକରଣ ଲେଖ ।
Answer:
BSE Odisha Class 10 Physical Science Solutions Chapter 2 img-15

କାର୍ଯ୍ୟାବଳୀ (ACTIVITY):

କର୍ଯ୍ୟାବଳୀ-1 (Activity-1)

  • ବିଜ୍ଞାନ ପରୀକ୍ଷାଗାରରୁ ହାଇଡ୍ରୋକ୍ଲୋରିକ୍ ଏସିଡ୍, ସଫ୍ୟୁରିକ୍ ଏସିଡ୍, ନାଇଟ୍ରିକ୍ ଏସିଡ୍, ଏସିଟିକ୍ ଏସିଡ୍, ସୋଡ଼ିୟମ୍‌ ହାଇଡ୍ରକ୍‌ସାଇଡ଼, କ୍ୟାସିୟମ୍‌ ହାଇଡ୍ରକ୍‌ସାଇଡ଼, ପୋଟାସିୟମ୍ ହାଇଡ୍ରକ୍‌ସାଇଡ଼, ମ୍ୟାଗ୍‌ନେସିୟମ୍ ହାଇଡ୍ରକ୍‌ସାଇଡ୍ ଏବଂ ଏମୋନିୟମ୍ ହାଇଡ୍ରକ୍‌ସାଇଡ୍ ସଂଗ୍ରହ କରାଯାଉ ।
  • ଗୋଟିଏ ଗୋଟିଏ ୱାଚଗ୍ଲାସରେ ଉପରେ ଦିଆଯାଇଥ‌ିବା ପ୍ରତ୍ୟେକ ଦ୍ରବଣରୁ ଗୋଟିଏ ଲେଖାଏଁ ବୁନ୍ଦା ରଖ୍ ‘ସାରଣୀରେ ଦର୍ଶାଯାଇଥିବା ଭଳି ସୂଚକ ଗୁଡ଼ିକରୁ ଗୋଟିଏ ଲେଖାଏଁ ବୁନ୍ଦା ମିଶାଇ ପରୀକ୍ଷା କରାଯାଉ ।

BSE Odisha Class 10 Physical Science Solutions Chapter 2 img-16
ସିଦ୍ଧାନ୍ତ:
ଏହି ସୂଚକଗୁଡିକ ନିଜର ବର୍ଷ ପରିବର୍ତ୍ତନ ଦ୍ଵାରା ଆମକୁ ଜଣାଇ ଦିଏ ଯେ ଏହା ଅମ୍ଳୀୟ କିମ୍ବା କ୍ଷାରୀୟ । କେତେକ ପଦାର୍ଥ ଅଛି ଯାହାର ଅମ୍ଳୀୟ ଓ କ୍ଷାରୀୟ ମାଧ୍ୟମରେ ଗନ୍ଧର ପରିବର୍ତ୍ତନ ହୋଇଥାଏ । ଏଗୁଡ଼ିକୁ ଘ୍ରାଣ-ସୂଚକ (Olfactory indicator) କହନ୍ତି ।

କର୍ଯ୍ୟାବଳୀ-2 (Activity-2)

  • ଗୋଟିଏ ପ୍ଲାଷ୍ଟିକ୍ ବ୍ୟାଗରେ ସରୁ ସରୁ କଟାଯାଇଥିବା ପିଆଜ ଏବଂ କିଛି ସଫା ପତଳା ଲୁଗାପଟି ରଖି ତା’ର ମୁହଁକୁ ଭଲଭାବରେ ବାନ୍ଧି ଏକ ଫ୍ରିଜ୍ ମଧ୍ଯରେ ତାକୁ ଗୋଟିଏ ରାତି ରଖାଯାଉ ।
  • ବର୍ତ୍ତମାନ ଦୁଇଟି ଲୁଗାପଟି ନେଇ ବ୍ୟାଗରୁ କାଢ଼ି ତା’ର ଗନ୍ଧକୁ ଆଘ୍ରାଣ କରାଯାଉ । ପଟିଦ୍ଵୟକୁ ଏକ ପରିଷ୍କୃତ ପୃଷ୍ଠ ଉପରେ ରଖ୍ ଗୋଟିଏ ପଟିରେ କିଛି ବୁନ୍ଦା ଲଘୁ ଲବଣାମ୍ଳ ଦ୍ରବଣ ଓ ଅନ୍ୟ ପଟିରେ କିଛି ଲଘୁ |
  • ଲୁଗାପଟି ଦ୍ଵୟକୁ ପାଣିରେ ଧୋଇ ସେଗୁଡ଼ିକର ଗନ୍ଧ ପରୀକ୍ଷା କରାଯାଉ ।
  • ବର୍ତ୍ତମାନ କିଛି ଲଘୁ ଭାନିଲା ଅତର ଏବଂ ଲବଙ୍ଗ ତେଲକୁ ନେଇ ଉପରୋକ୍ତ ପରୀକ୍ଷା କରାଯାଉ ।

ପର୍ଯ୍ୟବେକ୍ଷଣ :
ତିନୋଟି ଯାକ ପରିସ୍ଥିତି, ଯଥା – ପିଆଜ, ଭାନିଲା ଅତର ଓ ଲବଙ୍ଗ ତେଲର ଗନ୍ଧ ଲଘୁ ସୋଡ଼ିୟମ୍ ହାଇଡ୍ରେକ୍‌ସାଇଡ୍ ଦ୍ରବଣରେ ଲୋପ ପାଇଯାଇଛି ।

ସିଦ୍ଧାନ୍ତ :
ପର୍ଯ୍ୟବେକ୍ଷଣ ଅନୁସାରେ ଭାନିଲା, ପିଆଜ ଓ ଲବଙ୍ଗକୁ ଘ୍ରାଣସୂଚକ ଭାବେ ଅମ୍ଳୀୟ ଓ କ୍ଷାରୀୟ ଦ୍ରବଣକୁ ଚିହ୍ନଟ କରିବା ପାଇଁ ବ୍ୟବହାର କରାଯାଇପାରେ ।

BSE Odisha 10th Class Physical Science Solutions Chapter 2 ଅମ୍ଳ, କ୍ଷାରକ ଓ ଲବଣ

କର୍ଯ୍ୟାବଳୀ-3 (Activity-3)
ପରାକ୍ଷା:

  • ଏକ ପରୀକ୍ଷାନଳୀରେ ପ୍ରାୟ ପାଞ୍ଚ ମିଲି ଲିଟର ଲଘୁ ସଲଫ୍ୟୁରିକ୍ ଅମ୍ଳ ନେଇ ସେଥ‌ିରେ କିଛି ଜିଙ୍କ୍ ଦାନା
  • ଜିଙ୍କ୍ ଦାନା ଲଘୁ ସଲଫ୍ୟୁରିକ୍ ଅମ୍ଳ ସହ ମିଶି ଏକ ପ୍ରକାର ଗ୍ୟାସ୍ ସୃଷ୍ଟି କରିବ ।
  • ଉତ୍ପନ୍ନ ଗ୍ୟାସ୍‌କୁ ସାବୁନ୍ ଦ୍ରବଣ ମଧ୍ୟରେ ପ୍ରବାହିତ କରାଯାଉ ।
  • ଗ୍ୟାସ୍‌ପୂର୍ଣ୍ଣ ଫୋଟକାଗୁଡ଼ିକ ନିକଟକୁ ଜଳନ୍ତା ମହମବତୀ ନେଇ ପରୀକ୍ଷା କରାଯାଉ ।
  • ଗିତ୍ର ଅନ୍ତସାରେ ଭପକରଣଣ୍ଡଡ଼ିକୁ ସଜ|ଯାତ୍ |

BSE Odisha Class 10 Physical Science Solutions Chapter 2 img-17
ପର୍ଯ୍ୟବେକ୍ଷଣ :

  • ଦସ୍ତାଦାନାଗୁଡ଼ିକର ପୃଷ୍ଠ ଭାଗରେ ବର୍ଣ୍ଣହୀନ ଓ ଗନ୍ଧହୀନ ଗ୍ୟାସ୍ ଉତ୍ପନ୍ନ ହୋଇ ସାବୁପାଣି ମଧ୍ୟରେ ଫୋଟକା ସୃଷ୍ଟି ହେବ ।
  • ସାବୁନ୍ ଫୋଟକାଗୁଡ଼ିକରେ ଥ‌ିବା ଗ୍ୟାସ୍ ଜୋର୍‌ରେ ଶବ୍ଦ କରି ଜଳିବ ।

ସିଦ୍ଧାନ୍ତ :
ଧାତୁ ଅମ୍ଳ ସହ ପ୍ରତିକ୍ରିୟା କରି ଲବଣ ଓ ହାଇଡ୍ରୋଜେନ୍ ଗ୍ୟାସ୍ ସୃଷ୍ଟି କରେ ।
Zn + H2SO4 → ZnSO4 + H2
ଜିଙ୍କ୍ + ଲଘୁ ଗନ୍ଧକାମ୍ଳ → ଜିଙ୍କ୍ ସଲଫେଟ୍ + ଉଦ୍‌ଜାନ
ଧାତୁ + ଅମ୍ଳ → ଲବଣ + ହାଇଡ୍ରୋଜେନ୍ ଗ୍ୟାସ୍
BSE Odisha Class 10 Physical Science Solutions Chapter 2 img-18

କର୍ଯ୍ୟାବଳୀ-4 (Activity-4)
ପରୀକ୍ଷା:
ସେଥୁରେ 2 ମିଲିଲିଟର ସୋଡ଼ିୟମ୍ ହାଇଡ୍ରୋକ୍‌ସାଇଡ୍ ମିଶାଇ ପରୀକ୍ଷାନଳୀଟିକୁ ଗରମ କରାଯାଉ । କିଛି ଜିନା ଗୋଟିଏ ପରୀକ୍ଷାନଳୀରେ ନିଆଯାଉ ।

ପର୍ଯ୍ୟବେକ୍ଷଣ :
ରାସାୟନିକ ପ୍ରତିକ୍ରିୟାରୁ ହାଇଡ୍ରୋଜେନ୍ ଗ୍ୟାସ୍ ଉତ୍ପନ୍ନ ହେବ ।

ସିଦ୍ଧାନ୍ତ : ଉପର ପରୀକ୍ଷଣରୁ ଜଣାପଡ଼ିଲା ଯେ, ଧାତୁ କ୍ଷୀର ସହ ପ୍ରତିକ୍ରିୟା କରି ଉଦ୍‌ଜାନ ଗ୍ୟାସ୍ ସୃଷ୍ଟି କରେ ।
BSE Odisha Class 10 Physical Science Solutions Chapter 2 img-19

କର୍ଯ୍ୟାବଳୀ-5 (Activity-5)
ପରୀକ୍ଷା:

  • ଦୁଇଟି ପରୀକ୍ଷାନଳୀ ନେଇ ତାକୁ A ଓ B ଭାବରେ ନାମିତ କରାଯାଉ ।
  • ପରୀକ୍ଷାନଳୀ A ରେ ପ୍ରାୟ 0.5 ଗ୍ରାମ୍ ସୋଡ଼ିୟମ୍‌ କାର୍ବୋନେଟ୍ (Na2CO3) ଏବଂ ପରୀକ୍ଷାନଳୀ Bରେ 0.5 ଗ୍ରାମ୍ ସୋଡ଼ିୟମ୍‌ ହାଇଡ୍ରୋଜେନ୍ କାର୍ବୋନେଟ୍ (NaHCO3) ନିଆଯାଉ ।
  • ପ୍ରାୟ 2 ମିଲିଲିଟର ଲଘୁ ଲବଣାମ୍ଳ ଉଭୟ ପରୀକ୍ଷାନଳୀରେ ମିଶାଯାଉ ।

ପର୍ଯ୍ୟବେକ୍ଷଣ:
ପ୍ରତ୍ୟେକ କ୍ଷେତ୍ରରେ ଗ୍ୟାସ୍ ନିର୍ଗତ ହେବ ।
ପ୍ରତ୍ୟେକ କ୍ଷେତ୍ରରେ ନିର୍ଗତ ହେଉଥ‌ିବା ଗ୍ୟାସ୍‌କୁ ଚିତ୍ରରେ ପ୍ରଦର୍ଶିତ ହେବା ଭଳି ଚୂନପାଣି ମଧ୍ୟରେ ପ୍ରବେଶ କରାଇଲେ ଧଳା ଅବକ୍ଷେପ ସୃଷ୍ଟି ହେବ ।
BSE Odisha Class 10 Physical Science Solutions Chapter 2 img-20

ସିଦ୍ଧାନ୍ତ:
ପରୀକ୍ଷାନଳୀ Aରେ ଘଟୁଥିବା ରାସାୟନିକ ପ୍ରତିକ୍ରିୟା – ସୋଡ଼ିୟମ୍ କାର୍ବୋନେଟ୍‌ରେ ଲଘୁ ଲବଣାମ୍ଳ ମିଶି ପ୍ରତିକ୍ରିୟା କଲେ ସୋଡ଼ିୟମ୍ କ୍ଲୋରାଇଡ୍ ଲବଣ, ଜଳ ଓ ଅଙ୍ଗାରକାମ୍ଳ ସୃଷ୍ଟି ହୁଏ ।
Na2CO3(s) + 2HCl (aq) → 2 NaCl (aq) + H2O(l) + CO2(g)
ପ୍ରତିକ୍ରିୟା କରି ସୋଡ଼ିୟମ୍ ଲବଣ, ଜଳ ଓ ଅଙ୍ଗାରକାମ୍ଳ ସୃଷ୍ଟି ହୁଏ ।
NaHCO3(s) + HCl (aq) → NaCl (aq) + H2O(l) + CO2(g)

BSE Odisha 10th Class Physical Science Solutions Chapter 2 ଅମ୍ଳ, କ୍ଷାରକ ଓ ଲବଣ

କର୍ଯ୍ୟାବଳୀ-6 (Activity-6)
ପରୀକ୍ଷା:
ଗୋଟିଏ ପରୀକ୍ଷାନଳୀରେ ପ୍ରାୟ 2 ମିଲିଲିଟର ଲଘୁ ସୋଡ଼ିୟମ୍‌ ହାଇଡ୍ରୋକ୍‌ସାଇଡ୍ ନେଇ ତହିଁରେ 2 ବୁନ୍ଦା ଫେନଲଫ୍‌ଲିନ୍ ମିଶାଇ ଏହି ଦ୍ରବଣ ମଧ୍ୟକୁ କିଛି ଲଘୁ ଲବଣାମ୍ଳ ବୁନ୍ଦା ବୁନ୍ଦା କରି ପକାଯାଉ ।

ପର୍ଯ୍ୟବେକ୍ଷଣ :
ଅମ୍ଳ ମିଶାଇବା ପରେ ଫେନଲ୍‌ଫ୍‌ଲିନ୍‌ର ବର୍ଣ୍ଣ ବଦଳିଯିବ ।

ପରୀକ୍ଷା:
ବର୍ତ୍ତମାନ ଉପର ମିଶ୍ରଣରେ କିଛି ବୁନ୍ଦା ସୋଡ଼ିୟମ୍ ହାଇଡ୍ରୋକ୍‌ସାଇଡ୍ ଦ୍ରବଣ ମିଶାଯାଉ ।

ପର୍ଯ୍ୟବେକ୍ଷଣ :
ଫେନଲ୍‌ଫ୍‌ଲିନ୍ ଦ୍ରବଣର ବର୍ଣ୍ଣ ଗୋଲାପୀ ହୋଇଯିବ ।

ସିଦ୍ଧାନ୍ତ:
ଉପର ପରୀକ୍ଷାରୁ ଜଣାପଡ଼ିଲା ଯେ, ଗୋଟିଏ କ୍ଷାରକର ପ୍ରଭାବକୁ ଗୋଟିଏ ଅମ୍ଳ ନିଷ୍ଫଳ କରୁଛି ଏବଂ ଗୋଟିଏ ଅମ୍ଳର ପ୍ରଭାବକୁ ଗୋଟିଏ କ୍ଷାରକ ନିଷ୍ଫଳ କରୁଛି ।
NaOH(aq) + HCl (aq) → NaCl (aq) + H2O (l)
ଗୋଟିଏ ଅମ୍ଳ ଏବଂ ଗୋଟିଏ କ୍ଷାରକ ମଧ୍ୟରେ ରାସାୟନିକ ପ୍ରତିକ୍ରିୟା ଘଟି ଲବଣ ଓ ଜଳ ଉତ୍ପନ୍ନ ହୁଏ ।
ଏହି ରାସାୟନିକ ପ୍ରତିକ୍ରିୟାକୁ ପ୍ରଶମନୀକରଣ କହନ୍ତି ।
କ୍ଷାରକ + ଅମ୍ଳ → ଲବଣ + ଜଳ

କର୍ଯ୍ୟାବଳୀ-7 (Activity-7)
ପରୀକ୍ଷା:
ଗୋଟିଏ ପରୀକ୍ଷାନଳୀରେ ଅଳ୍ପ ପରିମାଣର କପର ଅକ୍‌ସାଇଡ୍ ନେଇ ଏହା ମଧ୍ୟରେ ହାଇଡ୍ରୋକ୍ଲୋରିକ୍ ଏସିଡ଼କୁ ଘାଣ୍ଟୁଥ‌ିବା ଅବସ୍ଥାରେ ଧୀରେ ଧୀରେ ମିଶାଯାଉ ।

ପର୍ଯ୍ୟବେକ୍ଷଣ:
ଦ୍ରବଣର ବର୍ଣ୍ଣ ନୀଳ, ସବୁଜ ହୋଇଯିବା ସହିତ କପର ଅକ୍‌ସାଇଡ୍ ଦ୍ରବୀଭୂତ ହୋଇଯାଇଛି ।

ସିଦ୍ଧାନ୍ତ:
ରାସାୟନିକ ପ୍ରତିକ୍ରିୟାରେ କପର (II) କ୍ଲୋରାଇଡ୍ ଉତ୍ପନ୍ନ ହୋଇଥିବା ଯୋଗୁ ଦ୍ରବଣର ବର୍ଣ୍ଣ ନୀଳ – ପଚୁଡ ହୋଇଛି |
BSE Odisha Class 10 Physical Science Solutions Chapter 2 img-21

କର୍ଯ୍ୟାବଳୀ-8 (Activity-8)
ପରୀକ୍ଷା:

  • ଗ୍ଲୁକୋଜ୍, ଆଲ୍‌କହଲ୍, ହାଇଡ୍ରୋକ୍ଲୋରିକ୍ ଏସିଡ୍, ସଫ୍ୟୁରିକ୍ ଏସିଡ଼୍ ଇତ୍ୟାଦିର ଦ୍ରବଣ ନିଆଯାଉ ।
  • ଗୋଟିଏ ଠିପିରେ ଦୁଇଟି କଣ୍ଟା ଲଗାଇ, ଏକ 100 ମିଲି. ଲି. ବିକର ମଧ୍ଯରେ ରଖାଯାଉ ।
  • ଚିତ୍ରରେ ଦର୍ଶାଯାଇଥ‌ିବା ଭଳି ଗୋଟିଏ ବଲ୍‌ବ ଓ ଗୋଟିଏ ସୁଇଚ୍ ମଧ୍ୟଦେଇ କଣ୍ଟା ଦୁଇଟିକୁ 6 ଭୋଲ୍ଟ ବ୍ୟାଟେରୀର ଦୁଇ ବିପରୀତ ଅଗ୍ର ସହିତ ସଂଯୁକ୍ତ କରାଯାଉ ।
  • ବର୍ତ୍ତମାନ ବିକର ମଧ୍ୟକୁ କିଛି ଲଘୁ ହାଇଡ୍ରୋକ୍ଲୋରିକ୍ ଅମ୍ଳ ଢଳାଯାଉ ଏବଂ ସୁଇଚ୍ ଦବାଇ ବିଦ୍ୟୁତ୍ ପ୍ରବାହ ଦୁଇ କରାଯାଉ ।
  • ଲଘୁ ସଲଫ୍ୟୁରିକ୍ ଅମ୍ଳ ନେଇ ଏହି କାର୍ଯ୍ୟ ପୁନର୍ବାର କରାଯାଉ । ଗ୍ଲା କୋଜ୍ ଓ ଆଲ୍‌କହଲ୍ ଦ୍ରବଣ ପୃଥକ୍ ଭାବେ ନେଇ ଏହି ପରୀକ୍ଷା ମଧ୍ୟ କରାଯାଉ ।

BSE Odisha Class 10 Physical Science Solutions Chapter 2 img-22

ପର୍ଯ୍ୟବେକ୍ଷଣ:

  • ବିକର ମଧ୍ଯରେ ଅମ୍ଳୀୟ ଦ୍ରବଣ ନିଆଯାଇଥିବା ବେଳେ ବଲ୍‌ବଟି ଜଳୁଛି ।
  • ବିକର ମଧ୍ୟରେ ଗ୍ଲୁକୋଜ ଓ ଆଲକ୍‌ଲର ଦ୍ରବଣ ନିଆଯାଇଥିବାବେଳେ ବଲ୍‌ବଟି ଜଳୁନାହିଁ ।

ସିଦ୍ଧାନ୍ତ:

  • ଅମ୍ଳ ଜଳରେ ଦ୍ରବୀଭୂତ ହୋଇ ହାଇଡ୍ରୋଜେନ୍ ଆୟନ (H+) ଦେଉଥ‌ିବାରୁ ତାହା ବିଦ୍ୟୁତ୍ ପରିବହନ କରେ ।
  • ଗ୍ଲୁକୋଜ୍ କିମ୍ବା ଆଲ୍‌କହଲ୍ ଜଳରେ ବିଯୋଜିତ ହୋଇ H(aq)+ ଆୟନ ସୃଷ୍ଟି କରନ୍ତି ନାହିଁ । ତେଣୁ ଆଲ୍‌କହଲ୍ ଏବଂ ଗ୍ଲୁକୋଜ୍ ଭଳି ଯୌଗିକଗୁଡ଼ିକରେ ହାଇଡ୍ରୋଜେନ୍ ଥିଲେ ମଧ୍ୟ ସେମାନଙ୍କ ଜଳୀୟ ଦ୍ରବଣରେ H(aq)+ ଆୟନ ସୃଷ୍ଟି ହୁଏ ନାହିଁ । ଏହି କାରଣରୁ ଏଗୁଡ଼ିକୁ ଅମ୍ଳ ଶ୍ରେଣୀଭୁକ୍ତ କରାଯାଇ ନାହିଁ ।

କର୍ଯ୍ୟାବଳୀ-9 (Activity-9)
ପରୀକ୍ଷା:
ପ୍ରାୟ 1 ଗ୍ରାମ୍ କଠିନ ସୋଡ଼ିୟମ୍ କ୍ଲୋରାଇଡ୍ ଗୋଟିଏ ପରିଷ୍କୃତ ଓ ଶୁଷ୍କ ପରୀକ୍ଷାନଳୀରେ ନିଆଯାଉ । ଚିତ୍ରରେ ପ୍ରଦର୍ଶିତ ହେବାଭଳି ଉପକରଣଗୁଡ଼ିକୁ ସଂଯୋଗ କରାଯାଉ ।
କିଛି ଗାଢ଼ ସଲଫ୍ୟୁରିକ୍ ଏସିଡ୍ ପରୀକ୍ଷାନଳୀରେ ମିଶାଯାଉ ।

ପର୍ଯ୍ୟବେକ୍ଷଣ:
ଟ|ଡ୍ ସଲତ୍ୟୁରିକ୍ ଏସିଡ୍‌. ପର1ଷ୍ପା ନଳୀରେ ମିଶାଇଲେ HCI ଗ୍ୟାସ୍ ସୃଷ୍ଟି ହେବ । ପୁନଶ୍ଚ ଏହି ଉତ୍ପନ୍ନ ଗ୍ୟାସ୍‌କୁ ଶୁଷ୍କ ପରାଷା କରାଇଲ ଓ ତା ନାଳ ଲିଙ୍ମସ୍ କାଗଜ ଲାଲ୍ ହୋଇଯିବ । କିନ୍ତୁ ଶୁଷ୍କ ଲିଟ୍ମମସ୍ କାଖଡର କୌଣସି ପରିଚ୍ତ୍ତନ ଘଟିବ ନାହିଁ ।
BSE Odisha Class 10 Physical Science Solutions Chapter 2 img-23

ସିଦ୍ଧାନ୍ତ:
ହାଇଡ୍ରୋଜେନ ଆୟନ ସ୍ବତନ୍ତ୍ର ଭାବରେ ରହିପାରେ ନାହିଁ କିନ୍ତୁ ଏହା ଜଳ ଅଣୁ ସହିତ ମିଳିତ ହୋଇ ରହିଥାଏ । ତେଣୁ ହାଇଡ୍ରୋଜେନ ଆୟନକୁ ସର୍ବଦା H (ag) କିମ୍ବା ହାଇଡ୍ରୋନିୟମ ଆୟନ (H3O+) ଭାବରେ ଦର୍ଶାଯାଇଥାଏ ।
H++ H2O → H2O+
ଅମ୍ଳଗୁଡ଼ିକ ଜଳରେ H3O+ କିମ୍ବା H+(ag) ଆୟନ ପ୍ରଦାନ କରନ୍ତି ।
ଜଳର ଅନୁପସ୍ଥିତିରେ HCI ଅଣୁରୁ HT ଆୟନର ପୃଥକୀକରଣ ଘଟିପାରେ ନାହିଁ ।
HCI + H2O — H3O+ + Cl
H+ ଆୟନ ସ୍ଵତନ୍ତ୍ରଭାବରେ ରହିପାରେ ନାହିଁ । କିନ୍ତୁ ଏହା ଜଳ ଅଣୁ ସହିତ ମିଳିତ ହୋଇ ରହିଥାଏ ।

ଡଳ1ୟ, ତ୍ରତ୍ଣରେ କ୍ଷାରକର ହୂମିକା:
କ୍ଷାରକ ଜଳରେ ଦ୍ରବୀଭୂତ ହୋଇ ହାଇଡ୍ରକ୍‌ସାଇଡ୍ (OH) ଆୟନ ପ୍ରଦାନ କରନ୍ତି । ଯେଉଁ କ୍ଷାରକଗୁଡ଼ିକ ଜଳରେ ଦ୍ରବଣୀୟ, ସେଗୁଡ଼ିକୁ କ୍ଷାର ବା ଆଲ୍‌କାଲି (Alkali) କହନ୍ତି । ସମସ୍ତ କ୍ଷାରକ ଜଳରେ ଦ୍ରବୀଭୂତ ହୋଇ ହାଇଡ୍ରିକସାଇଡ (OH) ଆୟନ ପ୍ରଦାନ କରନ୍ତି ।
BSE Odisha Class 10 Physical Science Solutions Chapter 2 img-24

କର୍ଯ୍ୟାବଳୀ-10 (Activity-10)
ପରୀକ୍ଷା:
ଗୋଟିଏ ବିକରରେ ପ୍ରାୟ 10 ମିଲିଲିଟର ଜଳ ନେଇ ଏହା ମଧ୍ୟରେ କିଛି ଗାଢ଼ ଗନ୍ଧକାମ୍ଳ ମିଶାଯାଉ ଏବଂ ବିକରକୁ ଘୂରାଇ ମିଶ୍ରଣଟିକୁ ମିଶାଯାଉ ।

ପର୍ଯ୍ୟବେକ୍ଷଣ:
ବିକର୍‌ର ନିମ୍ନ ଅଂଶକୁ ସ୍ପର୍ଶ କଲେ’ ହାତକୁ ଗରମ ଜଣାପଡ଼ିବ ।

ସିଦ୍ଧାନ୍ତ:
ଅମ୍ଳ ବା କ୍ଷାରକ ଜଳରେ ଦ୍ରବୀଭୂତ ହେବା ଏକ ଅତିମାତ୍ରାରେ ତାପଉତ୍ପାଦୀ ପ୍ରତିକ୍ରିୟା ।

କର୍ଯ୍ୟାବଳୀ-11 (Activity-11)
ଦତ୍ତ ସାରଣୀରେ ଦିଆଯାଇଥିବା ଦ୍ରବଣଗୁଡ଼ିକର pH ମୂଲ୍ୟ ଲିପିବଦ୍ଧ କରାଯାଇଛି ।
BSE Odisha Class 10 Physical Science Solutions Chapter 2 img-25
pH କାଗଜରେ ଦର୍ଶାଯାଇଥିବା କେତେକ ସାଧାରଣ ପଦାର୍ଥଗୁଡ଼ିକର pH (ବର୍ଷ ଏକ ସ୍ଥୂଳ ସୂଚନା ମାତ୍ର) ଅମ୍ଳ ଓ କ୍ଷାରକର ସବଳତା: ଯେଉଁ ଅମ୍ଳଗୁଡ଼ିକ ଅଧିକ ପରିମାଣର H+ ଆୟନ ଦେଇଥା’ନ୍ତି, ସେଗୁଡ଼ିକ ସବଳ ଅମ୍ଳ ଏବଂ ଯେଉଁ ଅମ୍ଳଗୁଡ଼ିକ କମ୍ ପରିମାଣରେ H+ ଆୟନ ଦେଇଥା’ନ୍ତି, ସେଗୁଡ଼ିକୁ ଦୁର୍ବଳ ଅମ୍ଳ କୁହାଯାଏ । ଯେଉଁ କ୍ଷାରକ ଅଧ‌ିକ ପରିମାଣରେ OH ଆୟନ ଦେଇଥା’ନ୍ତି, ସେଗୁଡ଼ିକ ସବଳ କ୍ଷାରକ । ଯେଉଁ କ୍ଷାରକଗୁଡ଼ିକ କମ୍ ପରିମାଣରେ OH ଆୟନ ଦେଇଥା’ନ୍ତି, ସେଗୁଡ଼ିକୁ ଦୁର୍ବଳ କ୍ଷାରକ କୁହାଯାଏ ।

BSE Odisha 10th Class Physical Science Solutions Chapter 2 ଅମ୍ଳ, କ୍ଷାରକ ଓ ଲବଣ

କର୍ଯ୍ୟାବଳୀ-12 (Activity-12)

  • ଗୋଟିଏ ଜମିର ବିଭିନ୍ନ ସ୍ଥାନରୁ ସଂଗୃହୀତ ପ୍ରାୟ 2 ଗ୍ରାମ୍ ମାଟି ଗୋଟିଏ ପରୀକ୍ଷାନଳୀରେ ନେଇ ସେଥ‌ିରେ 5 ମିଲିଲିଟର ଜଳ ମିଶାଯାଉ ଓ ପରୀକ୍ଷାନଳୀକୁ ଭଲ ଭାବରେ ହଲାଇ ଦିଆଯାଉ ।
  • ପରୀକ୍ଷା ନଳୀରେ ଥ‌ିବା ପଦାର୍ଥକୁ ପରିସ୍ରବଣ କରି ଅନ୍ୟ ଏକ ପରୀକ୍ଷାନଳୀରେ ପରିସୃତ ଦ୍ରବଣକୁ ସଂଗ୍ରହ କରାଯାଉ ।
  • ଏକ ସାର୍ବଜନୀନ ସୂଚକ କାଗଜ ସାହାଯ୍ୟରେ ଏହି ପରିସୃତ ଦ୍ରବଣର pH ସ୍ଥିର କରାଯାଉ ।

କର୍ଯ୍ୟାବଳୀ-13 (Activity-13)
BSE Odisha Class 10 Physical Science Solutions Chapter 2 img-26

କର୍ଯ୍ୟାବଳୀ-14 (Activity-14)
BSE Odisha Class 10 Physical Science Solutions Chapter 2 img-27
ସମାନ ଯୁକ୍ତାତ୍ମକ କିମ୍ବା ସମାନ ବିଯୁକ୍ତାତ୍ମକ ରାଡ଼ିକାଲ ଥିବା ଲବଣଗୁଡ଼ିକ ଏକ ପରିବାରର ଅନ୍ତର୍ଭୁକ୍ତ ବୋଲି କୁହାଯାଏ ।

ପର୍ଯ୍ୟବେକ୍ଷଣ:
NaCl ଓ Na2SO4 ସୋଡ଼ିୟମ୍ ଲବଣ ପରିବାରର ଅନ୍ତର୍ଭୁକ୍ତ । ସେହିପରି ଭାବରେ NaCI ଓ KCI କ୍ଲୋରାଇଡ୍ ଲବଣ ପରିବାରର ଅନ୍ତର୍ଭୁକ୍ତ ।

  • ପୋଟାସିୟମ୍ ସଲ୍‌ଫେଟ୍ (K2SO4), ସୋଡ଼ିୟମ୍‌ ସଲ୍‌ଫେଟ୍ (Na2SO4), କ୍ୟାଲସିୟମ୍ ସଲଫେଟ୍ (CaSO4), ମ୍ୟାଗ୍ନେସିୟମ୍ ସଲଫେଟ୍ (MgSO4) ଇତ୍ୟାଦି ସଲ୍‌ଫେଟ୍ ଲବଣ ପରିବାରର ଅନ୍ତର୍ଭୁକ୍ତ ।
  • ସୋଡ଼ିୟମ୍‌ କ୍ଲୋରାଇଡ୍ (NaCl), ସୋଡ଼ିୟମ୍‌ ନାଇଟ୍ରେଟ୍ (NaNO3), ସୋଡ଼ିୟମ୍‌ କାର୍ବୋନେଟ୍ (Na2CO3) ଇତ୍ୟାଦି ସୋଡ଼ିୟମ୍ ଲବଣ ପରିବାରର ଅନ୍ତର୍ଭୁକ୍ତ ।
  • ସାଡ଼ିୟମ୍‌ କ୍ଲୋରାଇଡ୍ ଏବଂ ଏମୋନିୟମ୍ କ୍ଲୋରାଇଡ୍ (NH4CI) ଇତ୍ୟାଦି କ୍ଲୋରାଇଡ୍ ଲବଣ ପରିବାରର ଅନ୍ତର୍ଭୁକ୍ତ ।

CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Ex 9(c)

Odisha State Board Elements of Mathematics Class 12 Solutions CHSE Odisha Chapter 9 Integration Ex 9(c) Textbook Exercise Questions and Answers.

CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Exercise 9(c)

Integrate the following:
Question 1.
(i) ∫sin 4x cos 3x dx
Solution:
CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Ex 9(c) Q.1(1)

(ii) ∫cos 5x cos 2x dx
Solution:
CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Ex 9(c) Q.1(2)

(iii) ∫sin x cos 4x dx
Solution:
CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Ex 9(c) Q.1(3)

(iv) ∫sin 6x sin 3x dx
Solution:
CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Ex 9(c) Q.1(4)

(v) ∫cos 4x cos 5x sin 2x dx
Solution:
CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Ex 9(c) Q.1(5)

CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Ex 9(c)

(vi) ∫sin\(\frac{3 x}{4}\) cos\(\frac{x}{2}\) dx
Solution:
CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Ex 9(c) Q.1(6)

(vii) ∫cos 2x cos\(\frac{x}{2}\) dx
Solution:
CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Ex 9(c) Q.1(7)

(viii) ∫sin\(\frac{x}{2}\) sin\(\frac{x}{3}\) cos\(\frac{x}{4}\) dx
Solution:
CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Ex 9(c) Q.1(8)

Question 2.
(i) ∫cos2 x dx
Solution:
CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Ex 9(c) Q.2(1)

(ii) ∫sin3 x dx
Solution:
(ii) ∫sin3 x dx = ∫sin2 x . sin x dx
= ∫(1 – cos2 x) . sin x dx
[Put cos x = t
Then sin x dx = -dt]
= ∫(1 – t2) . (-dt) = \(\frac{1}{3}\)t3 – t + C
= \(\frac{1}{3}\)cos3 x – cos x + C

(iii) ∫cos4 x dx
Solution:
CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Ex 9(c) Q.2(3)

CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Ex 9(c)

(iv) ∫sin5 x dx
Solution:
∫sin5 x dx = ∫sin4 x sin x dx
= ∫(1 – cos2 x)2. sin x dx
[Put cos x = t
Then sin x dx = -dt]
= -∫(1 – t2)2 dt
= -∫(1 – 2t + t4) dt
= -(t – \(\frac{2}{3}\)t3 + \(\frac{1}{5}\)t5) + C
= \(\frac{2}{3}\)cos3 x – cos x – \(\frac{1}{5}\)cos5 x + C

(v) ∫cos7 x dx
Solution:
CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Ex 9(c) Q.2(5)

(vi) ∫sin6 x dx
Solution:
CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Ex 9(c) Q.2(6)

(vii) ∫cos5 x sin3 x dx
Solution:
∫cos5 x sin3 x dx
= ∫cos5 x (1 – cos2 x) sin x dx
[Put cos x = t Then sin x dx = -dt]
= ∫t5 (1 – t2 ). (-dt) = ∫(t7 – t5) dt
=  \(\frac{1}{8}\)t8 – \(\frac{1}{8}\)t6 + C
= \(\frac{1}{8}\)cos8 x – \(\frac{1}{8}\)cos6 x + C

(viii) ∫sin20 x cos20 x dx
Solution:
∫sin20 x cos20 x dx
= ∫sin20 x (1 – sin2 x) cos x dx
[Put sin x = t
Then cos x dx = -dt]
= ∫t20 (1 – t20). (-dt) = ∫(t20 – t22) dt
=  \(\frac{1}{21}\)t21 – \(\frac{1}{23}\)t23 + C
= \(\frac{1}{21}\)sin21 x – \(\frac{1}{23}\)sin23 x + C

(ix) ∫\(\frac{\sin ^3 x}{\cos ^6 x}\) dx
Solution:
CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Ex 9(c) Q.2(9)

(x) ∫cot3 x cosec16 x dx
Solution:
CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Ex 9(c) Q.2(10)

(xi) ∫sec30 x tan x dx
Solution:
∫sec30 x tan x dx
= ∫sec29 x . sec x . tan x dx
[Put sec x = t
Then sec x. tan x dx = dt]
= ∫t29 dt
= \(\frac{1}{30}\)t30 + C
= \(\frac{1}{30}\)sec30 x + C

(xii) ∫sin3 x sec14 x dx
Solution:
CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Ex 9(c) Q.2(12)

CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Ex 9(c)

Question 3.
(i) ∫sin4 x cos4 x dx
Solution:
CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Ex 9(c) Q.3(1)

(ii) ∫sin 3x cos2 x dx
Solution:
CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Ex 9(c) Q.3(2)

(iii) ∫cos 2x sin3 x dx
Solution:
CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Ex 9(c) Q.3(3)

(iv) ∫sin4 x cos2 x dx
Solution:
CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Ex 9(c) Q.3(4)

Question 4.
(i) ∫tan5 θ sec4 θ dθ
Solution:
∫tan5 θ sec4 θ dθ
= ∫tan5 θ (1 + tan2 θ) sec2 θ dθ
[Put tan θ = t
Then sec2 θ dθ = dt]
= ∫t5 (1 + t2) dt = ∫(t5 + t7) dt
= \(\frac{1}{6}\)t6 + \(\frac{1}{8}\)t8 + C
= \(\frac{1}{6}\)tan6 θ + \(\frac{1}{8}\)tan8 θ + C

(ii) ∫cot4 θ cosec4 θ dθ
Solution:
∫cot4 θ cosec4 θ dθ
= ∫cot4 θ (1 + cot2 θ) cosec2 θ dθ
[Put cot θ = t
Then cosec2 θ dθ = -dt]
= ∫t4 (1 + t2) (-dt) = ∫(t4 + t6) dt
= -{\(\frac{1}{5}\)t5 + \(\frac{1}{7}\)t7} + C
= -{\(\frac{1}{5}\)cot5 θ+ \(\frac{1}{7}\)cot7 θ} + C

(iii) ∫sec11 θ tan θ dθ
Solution:
∫sec11 θ tan θ dθ
= ∫sec10 θ sec θ tan θ dθ
[Put sec θ = t
Then sec θ tan θ dθ = -dt]
= ∫t10 dt = \(\frac{1}{11}\)t11 + C
= \(\frac{1}{11}\)sec11 θ + C

(iv) ∫cot θ cosec7 θ dθ
Solution:
∫cot θ cosec7 θ dθ
= ∫cosec6 θ . (cosec θ – cot θ) dθ
[Put sec θ = t
Then cosec θ . cot θ dθ = dt]
= ∫t6 (dt) = –\(\frac{1}{17}\)t7 + C
= –\(\frac{1}{17}\)cosec7 θ + C

(v) ∫tan3 θ dθ
Solution:
∫tan3 θ d0 = ∫tan θ – (tan2 θ) dθ
= ∫tan θ (sec2 θ – 1) dθ
= ∫tan θ sec2 θ dθ – ∫tan θ dθ
= ∫tan θ d(tan θ) – ∫tan θ dθ
= \(\frac{1}{2}\)tan2 θ + ln |cos θ| + C

CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Ex 9(c)

(vi) ∫cot4 θ dθ
Solution:
∫cot4 θ dθ = ∫cot2 θ cot2 θ dθ
= ∫cot2 θ (cosec2 θ – 1) dθ
= ∫cot2 θ . cosec2 θ dθ – ∫cot2 θ dθ
= ∫cot2 θ . cosec2 θ dθ – ∫(cosec2 θ – 1) dθ
= \(\frac{1}{3}\)cot3 θ + cot θ + θ + C

(vii) ∫tan5 θ dθ
Solution:
∫tan5 θ dθ = ∫tan3 θ . (sec2 θ – 1) dθ
= ∫tan3 θ . sec2 θ dθ – ∫tan3 θ dθ
= ∫tan3 θ . sec2 θ dθ – ∫tan θ (sec2 θ – θ) dθ
= ∫tan3 θ d(tan θ) – ∫tan θ d(tan θ) + ∫tan θ dθ
= \(\frac{1}{4}\)tan4 θ – \(\frac{1}{2}\)tan2 θ + ln |sec θ| + C

(viii) ∫cot6 θ dθ
Solution:
∫cot6 θ dθ
= ∫cot4 θ (cosec2 θ – 1) dθ
= ∫cot4 θ . cosec2 θ dθ – ∫cot4 θ dθ
= ∫cot4 θ cosec2 θ dθ – ∫cot2 θ (cosec2 θ – 1) dθ
= ∫cot4 θ . cosec2 θ dθ – ∫cot2 θ cosec2 θ dθ + ∫(cosec2 θ – 1) dθ
= -cot4 θ d(cot θ) + ∫cot2 θ d(cot θ) + ∫cosec2 θ dθ – ∫dθ
= –\(\frac{1}{5}\)cot5 θ + \(\frac{1}{3}\)cot3 θ – cot θ – θ + C

Question 5.
(i) \(\frac{\sin a x-\sin b x}{\cos a x-\cos b x}\) dx
Solution:
CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Ex 9(c) Q.5(1)

(ii) \(\frac{\cos p x+\cos q x}{\sin p x+\sin q x}\) dx
Solution:
\(\frac{\cos p x+\cos q x}{\sin p x+\sin q x}\) dx
CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Ex 9(c) Q.5(2)

(iii) \(\frac{\sin 4 x-\sin 2 x}{\cos x}\) dx
Solution:
CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Ex 9(c) Q.5(3)

(iv) \(\frac{\sin 2 x}{a \cos ^2 x+b \sin ^2 x+c}\) dx
Solution:
CHSE Odisha Class 12 Math Solutions Chapter 9 Integration Ex 9(c) Q.5(4)

CHSE Odisha Class 11 English Writing Description

Odisha State Board CHSE Odisha Class 11 Invitation to English 3 Solutions Writing Description Textbook Activity Questions and Answers.

CHSE Odisha 11th Class English Writing Description

Description

Descriptions are of two types: factual (or realistic) and impressionistic. For a factual or realistic description, you will have to go looking for descriptions of objects or processes. An impressionistic description, on the other hand, maybe factual in places but it is chiefly concerned with recording the impression produced by the describer of a person, place or object. Above all, there is the description of a person.
Some common words used to describe a person
Words that go with hair: long, wavy, curly, brown, dark
eyes : pale, blue, black, flashing
nose : long, high, fleshy
lips : full, thin
shoulder : broad, drooping
age : mid-thirties
voice : commanding
Important points in connection with the description of the person :
A person’s height (tall/short), lean or fat, age, physical appearance, the shape of the face with its prominent features* eyes (bright/dull/dark), hair, forehead, dress and nature.

CHSE Odisha Class 11 English Writing Description

Activity 5

Can you replace them with more favourable descriptions

Read passage C again. Note that there are some points of description which are not very favourable to the person being described. Can you replace them with more favourable descriptions? Reorganise the passage, starting with the sentence: “She was fair and her face was round.”
Answer:
She was fair and her face was round. The prominent feature of her face was its sparkle. She was tall and full of youth. She was lean. She had thick hair and her forehead was not that broad. Her nose was long and her cheeks chubby. She was elegantly dressed. She was brimming with confidence.

Activity 6

You met the people in the picture at a party. Describe them to your friend in a letter. (Have a close look at the picture first.)

You met the people in the picture at a party. Describe them to your friend in a letter

Answer:

Satyanagar, Plot No. 121
1st January 20

Dear Sarika,
Yesterday evening I had been to a great party. There was plenty to eat, and numerous games to play but the highlight of it all was the music and dance with which the party closed. Besides the music, we had a dance competition in which the best couple was chosen. The dance went on for an hour. Mr and Mrs Das were adjudged the best couple. They were a perfect match for each other. Mr Das was dressed in a black suit, white shirt and a black bow. He was tall, dark and handsome and he held himself elegantly as he held his wife.

His jet black hair, thick moustache and long sharp nose showed forth a man of character. Mrs Das just a shade shorter than her husband was a cute-looking lady. Her hair was tied in a chignon, her eyebrows were shaped like thin orange pieces. She too had a sharp nose, and a face as clear as glass. She was fair, slim and tall. She sported a short sleeveless gown and a plain slip-on. She also held a dupatta in her hand. She looked really chick and beautiful. They deserved the prize. Well, the party was over at around 4.00 a.m. in the morning. I really enjoyed the party even though it was exhausting.

Please write back.
Yours sincerely,
Rita.

CHSE Odisha Class 11 English Writing Description

Activity 7

Describe the person in the picture below as interestingly as you can.
Answer:
He wore a long full-sleeved magenta gown and long loose magenta trousers to go along with it. The gown opened onto a large star-shaped neck which was shining black with confetti pasted onto it. His face he had put on a mask with his face farded with cosmetic paint. He had a huge bulbous nose painted in red, large lips painted again in red. He wore no shoes but grey socks which looked extremely funny. In his hand, he held a conical hat which had feathers on its top.

Activity 8

Here is a short dialogue between two friends. They are talking about a mutual friend whose name is Prabhakar. Read the dialogue carefully and write a short description of Prabhakar.
Asaf : You remember Prabhakar? He has become a doctor. He is doing very well, in fact.
Krishna : Prabhakar? The name is familiar, but I don’t remember who you are talking about. What did he look like?
Asaf : He was that short chap with a shining pink face. Always dressed in white. He had long hair, like a girl’s. We used to call him Prabhavati, and how he used to blush then!
Answer:
Prabhakar is a short chap with a shining pink face. He sported long hair like a girl and was always clad in white.

Activity 9

(a) A stranger visited your house during your father’s absence. You received him and talked to him. When your father returned, he wanted to know if any visitor had come while he was away. Describe the visitor to your father so that he can know who you are referring to.
(b) Your mother is looking for a bride for your elder brother. You have seen a girl who, in your opinion, will be ideal for your brother. Describe her to your mother.
Answer:
(a) Dad, this man was around six feet high and darkly complexioned. He had peculiar hairstyle which was parted right in the middle like a girl’s. He also wore ear¬rings in both ears and four stone rings of different colours on his right hand. Two of his toes on the right also had rings in them. He was carrying a shoulder bag and putting on a white dhoti as well as white kameez. There was a long tilak on his forehead. He spoke in the Sambalpuri dialect and he is perhaps in his thirties. I hope you recognise him.

(b) She is very fair and has eyes shaped like petals of a rose, eyes-lashes thin and long like leaves of the touch-me-not. Her hair is thick and black, falling down even below the knees. Her face is spotlessly clean and has a soft look. She is twenty-four but looks like she is in her teens. There is a black birthmark on her chin which adds to the beauty of her face. Her sharp nose and jaw looked as if it was sculpted like a Grecian statue. Her height is about five-feet and she is slim. On the whole, she looked like a model.

CHSE Odisha Class 11 English Writing Description

Activity 10

Here is a picture of a rhinoceros. Write a short description of the animal for a friend who has not seen a rhinoceros.

Here is a picture of a rhinoceros. Write a short description of the animal for a friend who has not seen a rhinoceros.
Answer:
The very look of it is ferocious. It is a huge mammal, 4 feet high and perhaps 5 feet long, that is bigger than a cow and smaller than an adult elephant. Just like a cow, it has a long face with the snout protruding forward, underneath which is a large mouth. The lower jaw looks like a concave plateau. Its most remarkable features are two 1 horns protruding right out from the snout. Moreover, it has three toes on each of its legs. Its skin is so thick that they look like shielding pad. Besides this, it has a short tail. It is found mostly in Asia and Africa and it is a herbivore.

Activity 11

Here is the description of a particular dog. All the details are present, but not in order. Rewrite the description. Begin with the general appearance and size, then describe the features of the animal, which you find most striking.
(a) He has huge paws, with joined fingers and retractable claws.
(b) Achilles isn’t an ordinary dog.
(c) But the most incredible characteristic is his face, which looks sad and solemn.
(d) Firstly, he is larger than any dog I have ever seen, and he is more like a wolf.
(e) It seems as if he can almost speak if he is given the chance.
Answer:
Achilles isn’t an ordinary dog. He is larger than any normal dog and looks more like a wolf. He has huge paws, with jointed fingers and retractable claws. But the most incredible characteristic is his face, which looks solemn and sad. It seems as if he can speak, if he is given a chance.

Activity 12

Write short descriptions of the following animals. A few questions are given to help you organise your descriptions.

(a) A giraffe How tall is it? What makes it look so tall? Where is it found? What does it eat and how? How does it fight other giraffes and enemies? What kind of sound does it make?
(b) A tiger Where is it found? How tall/long/heavy is it? What is its colour? What is its food? What are man-eaters? How long does a tiger live (life span)? How do tiger cubs look?

Answer:
(a) A giraffe :
Excepting the now extinct Dinosaurs, the giraffe is the tallest mammal found originally on the African continent. Its most characteristic feature is its long neck that protrudes out angularly from its body and is usually about 4 feet to 6 feet long. Besides, just like the leopard, it has black spots spread all over its body which is white-skinned. It is due to this that it was formerly called a came lopard. The giraffe is herbivorous and lives on the leaves of plants which it can easily reach due to its height. It has a very long stride and therefore it is difficult for any preying animal to catch it.

(b) A tiger :
The tiger is a savage and cruel animal. We say, “As cruel as a tiger”. It is really a great cat. It is a large, strong, and fine-looking animal. Its hair is yellow, marked with black stripes. It is shaped like a cat, with a long tail, round head, and thickly padded feet. It has sharp claws and strong teeth. The tiger is an Indian animal. There are many in the jungles of Bengal. Like cats, tigers hunt at night. They kill big animals, like deer, cows, sheep and goats. They attack men, too. Some become “man-eaters”. They like men’s flesh best to eat. Tigers are feared by farmers. They come at night to steal their sheep and cows. Its average lifespan is 17 years and its cubs look like domestic cats with shining black eyes.

CHSE Odisha Class 11 English Writing Description

Activity 13

Rewrite passage (c), using your own words as far as possible. Divide your description into two paragraphs.

A telephone comes with a bell which can ring, a microphone which converts human speech into electrical signals, an earphone which converts incoming electrical signals back into speech, and a dial which is used to send electrical pulses along the line to an automatic exchange.
Answer:
When we want to make a call, we must lift the handset and then dial the number we want to call. Immediately after we dial the number an automatic selector connects us to an outgoing junction cable that is linked to the exchange we want. A ringing bell indicates the fact that a telephone has come. Then the operation starts. The exchange first connects our phone to automatic selector equipment which in turn connects us to an outgoing cable linked to the exchange that is connected to the number we rang. Finally, this exchange connects us to the phone we are interested in.

Activity 14

Add a short paragraph to passage (d). The hints below will help you in writing the paragraph.

Butter is a rich food made from the cream of milk. It is usually eaten as a spread on bread, but cooks may use butter for frying and making cakes and pastries. Butter contains about 80 per cent fat, the remainder being water, salt and protein. Butter is made from cream, by churning the cream so that the fat [ is separated out. For many centuries, farmers have made butter from cream by churning it by hand in a wooden vat. Nowadays, however, butter is made by machines. First, the milk is whirled in a centrifuge to separate the cream. The l cream is then pasteurised by heating it and then cooling it quickly. This action kills germs in the cream and prevents the butter from going rancid quickly. The pasteurised cream is then churned in huge revolving drums, which separate fat from the liquid in the cream. When the liquid, called the buttermilk, is ‘ drained away, the resulting mass of butter is then cut into pieces and packed.
Hints : How does butter feel when you touch it? Is it tasty to eat? / Is it expensive? j How is butter used in India? etc.
Answer:
Butter is hard but smooth to the touch because it is kept mostly in the refrigerator. Of course, it is tasty but expensive. A mere hundred grams cost thirteen rupees. It is mostly used in cakes and as a spread on bread sandwiches. Sometimes it is used to fry almonds and cashew nuts. However, its use is limited and common people seldom buy it.

Activity 15

Here is a conversation in which an uncle describes a saw to his nephew. Read through the conversation and write a paragraph describing a saw.

Boy : What is a saw, uncle?
Uncle: It’s something we use to cut a piece of wood into two.
Boy : You mean it’s a sort of axe, uncle?
Uncle: No, not an axe, This one has a thinner blade and a short ring-like handle of wood.
Boy : Oh, I know what it is. It’s like a sword.
Uncle: Not really. A saw has one edge sharp. The other edge does not cut.
Boy : Like a big knife?
Uncle: Partly, but the sharp edge does not cut like a knife. There are teeth on the sharp edge. When you press the blade against the wood and move it forward and backwards, like the bow of a violin, the wood gets cut along that line. There are big saws, too, which two people hold at either end to make cuts along the whole length of a log.
Answer:
A saw is an instrument made of either iron or steel with curved teeth on one side or both. The blade of a saw is thin but strong. There is a ring-like wooden handle fitted to one end of the instrument held during sawing wood or wood planks. When it is pressed against the wood, the wood gets cut along that line. Nowadays, the saw has developed a lot from its crude form to a sophisticated one.

CHSE Odisha Class 11 English Writing Description

Activity 16

Write a short description of the following objects :
(a) A football
Hints:
(i) Size, shape and colour
(ii) Is it smooth, rough or soft to the touch? Is it hard? Is it light or heavy?
(iii) How does it smell?
(iv) Does it bounce? How high?

(b) A ripe mango
Hints:
(i) Size, shape, colour and smell –
(ii) How does it feel to the touch?
(iii) What happens when you press it hard?
(iv) How does it taste?

(c) A pressure cooker
Hints:
(i) What is it? (Definition)
(ii) What does it look like? (parts, size, make, etc.)

Answer:
(a) A football :
A football is a spherical object made of hexagonal leather pieces of alternately white and black colour or plain grey. It has a bladder inside which is inflated by air to give it a round shape. The leather is smooth and soft in the evening but gradually becomes rough because of wear and tear as a result of frequent use. It is light when inflated and bounces up to a height of 15 feet to 20 feet depending on how much it has inflated and how hard it is hit.

(b) A ripe mango :
It is a tropical fruit which consists of a hard kernel, a central core around which is a fleshy pulp. It is yellowish-red in colour and in ovalish in shape. The mango smells sweet and is soft and smooth to the touch; when pressed hard the outer pulp along with the juice comes out. It has a very sweet taste to it.

(c) A pressure cooker :
A pressure cooker is a vessel in which food is cooked in steam under pressure. It consists of a very strong vessel, made of aluminium alloy with a lid that fits tightly on the top. The lid can be sealed onto the vessel by means of a rubber ring. At the centre of the lid, there is a vent or hole through which steam can escape. The food to be cooked is placed in a smaller vessel inside the cooker and a little water is poured into the outer vessel.

Water boils in the vessel and steam begins to escape through the vent. Then we stop the steam by placing a weight on the vent. Steam pressure inside increases and the temperature rises. So the food gets cooked at a higher temperature. This takes only one-third of the time taken by the ordinary method.

CHSE Odisha Class 11 English Writing Description

Activity 17

Describe the following objects :
(a) A bicycle
(b) A teapot
(c) A fountain pen
(d) A gold necklace

Answer:
(a) A bicycle :
A bicycle is the cheapest and simplest form of transport on wheels. It consists of the main frame and a secondary frame both joined together and triangular in shape. The main frame has a head tube in its front. The handle of the bicycle protrudes out from the upper end of the head tube while the fork protrudes out from the lower end of the head tube. An inner bolt holds both the handle and the fork in place. At the lower end of the fork is the front axle which holds the wheel.

At the opposite end of the upper end of the head, the tube is a tube that protrudes out of the hollow of the main frame. This has a nut-bolt arrangement to hold the seat. Similarly, the peak of the triangular main frame has a hole and axle arrangement to which the crank is connected. The secondary frame has a seat stay which serves as a support for the weight on the seat. The upper end of the seat stay is joined to the main frame while the lower end forks out into two legs which hold the rear wheel in place.

The wheels consist of a central spoke holder from which spokes radiate out into the rim of the wheel where it is screwed. The spokes keep the rim in shape and support it. Besides this, the wheel has an inflatable tube and an outer tyre. The tube has a valve through which air is pumped into it. This valve emerges on to the outer side of the rim through a hole in it. The crank is held by the main frame while the rear frame holds a sprocket wheel. A chain extends from the crank and is wound around the sprocket wheel. The chain is fitted onto them and locked.

The crank further has two pedals joined to it. When force is applied to the pedals, the crank turns and this chain transmits this force applied to the sprocket wheel which is attached to the rear wheel, thereby moving it. Consequently, the cycle moves. To facilitate proper control of the bike, there are brakes. Brake levers are attached to the handle and have brake brackets with rubber on them which are fitted close to the rear and front wheels. Besides this mudguards are provided for both wheels. Finally, a bell and a stand complete the bike. The stand serves as a prop to keep the bicycle standing.

(b) A teapot:
A teapot is a vessel used to brew tea. It can be of various shapes and sizes but most often it is cylindrical in shape with a hollow inside. It is open at one end and this top end has a lid which can be closed or opened as required. The lid is attached to the body of the teapot. The teapot also has a snout with an opening in it from which brewed tea is poured. In teapots of other kinds, instead of a snout, there is a long neck with a mouth at one from which the tea is to be poured. The teapot can be made of various materials like clay, bone china, wood, steel or copper.

(c) A fountain pen:
A fountain pen has two parts. A hollow cylindrical lower part two inches in diameter and a nib holder that is screwed onto it. Besides this, it has a cap with which to cover the nib and protect the ink from spreading. The lower cylindrical half of the pen is filled with ink. This ink passes to the nib which has a sharp pointed end to which it drips. It is with this pointed end of the nib that one writes.

(d) A gold necklace :
Gold is the most precious of all metals. Its bright yellow colour is very pretty. It takes fine polish. Gold is used to make many ornaments out of which a necklace is one. The goldsmith artistically makes it. It is of different sizes and designs. Each gold necklace has a beauty of its own. It is studded with rare stones and diamonds. This necklace is made by hand as well as by machine.

CHSE Odisha Class 11 English Writing Description

Activity 18

Your father has bought the item in the picture for you. Write a letter to your sister describing what it is, how it looks and what you are going to do with it.

Your father has bought the item in the picture for you. Write a letter to your sister describing what it is, how it looks and what you are going to do with it.

Answer:

Shanti Vihar
7 August 20

Dear sister,
Dad presented me with a very useful gift. I really needed it. Well, don’t hazard any guesses because you might think of the wrong thing. It is a wall clock. The clock is a fairly big one. It has a huge round dial which is fixed onto a round plastic case. This in turn is encrusted into a squarish plastic body. The glass on the dial case is spotlessly clean. One significant feature of the watch is its radium-coated hands.

These shine in the darkness and allow me to know the time even though the lights are off. Besides this, the clock has an alarm system. This serves the purpose of waking up a lazy boy like me. Nowadays I use the alarm to wake up at 5.00 a.m. to go out jogging. That is a thoughtful present from dad, isn’t it? I am writing to him separately to thank him but do tell him how useful it is to me. Thanks for sending cakes and biscuits through your classmate Suneeta.

Your loving brother,
Sushil.

Activity 19

Read through the following paragraph and answer the following questions.

Coal mining-digging coal out of the earth – is a very big industry. Some coal is mined on the surface, but most of it has to be mined deep underground. Both forms of mining are now highly mechanised. On or near the surface, coal is mined by the open-cast method. Huge power shovels first strip off the earth’s overburden above the coal seam. Then the coal is broken up by explosives and shovelled into trucks.

Underground mining is more complicated, more expensive, and more dangerous. Shafts are sunk down into the earth and tunnels are struck outwards from the shafts to the coal seams. Then a machine, called a continuous miner, rips coal from the mine face and loads it onto a conveyor belt, which carries the coal up.

Now answer the following questions :

(i) What is the paragraph about?
(iii) The sentences below give us a simple description of the process of surface ( mining, but they are not in order. Rewrite them in the proper order and use the connectives “first,” “second”, “third” and “finally”. “The coal is thus broken up. Explosives are detonated. The earth above the coal seam is removed. It is loaded into the trucks”.
(iii) There are certain steps involved in underground mining. Write down the steps in proper order. The first one is given to you as an example.
a. Shafts are sunk down in the ground.
b. _______________________
c. Coal is __________________
d. The coal is _______________
e. Then it is ________________

Answer:
(i) The paragraph defines coal mining and enumerates the two kinds of mining. The paragraph also describes the open-cast method of mining.
(ii) Firstly the earth above the coal seam is removed. Secondly, explosives are detonated. Thirdly, the coal is thus broken up. Finally, it is loaded into trucks.
(iii) (b) Tunnels are struck outward from the shafts to the coal seam.
(c) Coal is then ripped from the mine face by a machine called a continuous miner.
(d) The coal is broken up by explosives and shovelled into trucks.
(e) Then it is loaded onto a conveyor belt which carries the coal up.

CHSE Odisha Class 11 English Writing Description

Activity 20

Here is a description of an experiment demonstrating the process of photosynthesis in green leaves. Read it carefully and note the steps in the experiment.

Two leaves are removed from a de-starched plant. The upper side of one and the lower side of the other are greased with vaseline. The stalk of ‘ each leaf is dipped in water and the leaves are left in the light for four hours so that photosynthesis takes place. Most of the vaseline is wiped off and the leaves are placed in a solution of potassium iodide. The leaf greased on the upper side develops a blue colour, showing that starch has formed by photosynthesis from carbon dioxide, which entered through the leaf pores which are mainly on the underside. No colour develops in the other leaf in which vaseline blocked the pores.

Have you understood the steps involved in the experiment? Can you now help your younger sister conduct this experiment? For this, you may have to give her instructions and let her do the experiment. Give her instructions step by step. You may proceed like this :

1. Take two leaves from a de-starched plant.
2. Grease one leaf on the upper side.
3. _______________________
Continue the instructions till the experiment is over.
Answer:
1. Take two leaves from a de-starched plant
2. Grease one leaf on the upper-side
3. Grease the other on the lower side
4. Dip both leaves in water
5. Then leave it under light for four hours so that photosynthesis takes place.
6. After this wipe off vaseline from the leaves and place it in a solution of potassium iodide.
7. You will now notice that the leaf greased on the upper side develops a blue colour.
8. This shows that starch has formed photosynthesis from carbon dioxide which entered through the leaf pores on the underside of the leaf.
9. No colour develops on the leaf in which vaseline blocked the pores. Structural items used in the passages. We use technical writing while describing the processes etc. These technical writings are commonly impersonal and formal. In this type, the action referred to is more important than the doer of that action. Hence, we express this importance using active voice. Try to fill in the blanks.

1. Coal is mined ___________.
2. Both forms ________ are now highly mechanised.
3. Then the coal is broken up ________ and shovelled
4. Shafts are sunk ________ and tunnels are stuck ________.
5. Two leaves are removed ___________.
6. ________ are greased with vaseline
7. Stalks are dipped __________.
8. Leaves are left ____________.

Answer:
1. Coal is mined on the surface. but most of it has to be mined deep underground.
2. Both forms of mining are now highly mechanised.
3. Then the coal is broken up by explosives and shovelled into trucks.
4. Shafts are sunk down into the earth and tunnels are stuck outwards from the shafts to the coal seams.
5. Two leaves are removed from a de-starched plant.
6. The upper side of one and the lower side of the other are greased with vaseline.
7. Stalks are dipped in water.
8. Leaves are left in light for four hours.

Activity 21

Here is a set of instructions for an experiment on transpiration in plants. Rewrite the description in the passive voice. Select a potted plant and water it sufficiently before the experiment. Cover the soil surface by means of oil paper and check the ordinary evaporation of water. Put the pot on the workbench of the laboratory and cover it with a bell jar. Allow the experimental set-up to continue for one hour. Observe that drops of water stick to the inner wall of the bell jar.
Hint: A plotted plant is selected and it is watered sufficiently before the experiment. (Continue)
Answer:
A potted plant is selected and watered sufficiently before the experiment. Then its soil surface is covered by an oil paper to check ordinary evaporation of water. After this, the pot is put on the workbench of the laboratory and covered with a bell- jar. This experimental setup is allowed to continue for an hour. It is observed that drops of water stick to the inner wall of the bell jar.

Activity 22

The following sentences are from a passage, which tells us about the ideal temperature necessary for the growth of plants. But the sentences are not in order. Put them in order.
1. At lower temperatures the activity of enzymes is reduced; therefore, the growth is also retarded.
2. Most plants grow well between 20-30 degrees centigrade, which may be called the optimum temperature range.
3. The effect of temperature on growth may be indirectly related to the activity of enzymes.
4. But some plants grow well at temperatures lower than 20° C, while other plants grow best at temperatures higher than 30° C.
5. At higher temperatures, the activity of the enzymes in the plant is considerably increased, leading to a kind of ‘exhaustion’ of the plant. Beyond 40° C, the enzymes themselves are destroyed.
Answer:
Most plants grow well between 20°-30° centigrade, which may be called the optimum temperature range. But some plants grow well at temperatures lower than 20° C while other plants grow best at temperatures higher than 30° C. At higher temperatures, the activity of enzymes in the plant is considerably increased, leading to a kind of ‘exhaustion’ of the plant. Beyond 40° C, the enzymes themselves are destroyed. At lower temperatures the activity of enzymes is reduced; therefore, growth is also retarded. Thus the effect of temperature on growth may be indirectly related to the activity of enzymes.

CHSE Odisha Class 11 English Writing Description

Activity 23

Given below is a diagram which describes how water mixed with solid substances or impurities is distilled. Write a description of the process of distillation.

Given below is a diagram which describes how water mixed with solid substances or impurities is distilled

Answer:
The water mixed with solid substances or impurities is first put into a round-bottomed flask. This flask is then placed on a tripod stand. A rectangular glass tube is then put into the flask through the hole in the cork covering the flask. The tube must reach down to the depth of the water level in the flask. The other hand of the tube must be kept under an empty glass beaker. After this, the flask is to be heated by a glass flame. As the flask is heated, it gradually reaches boiling point and water starts turning into water vapour.

This steam passes through the rectangular tube. As it passes through the tube, the water vapour condenses and droplets of water start falling into the glass beaker. They quicken the process of condensation and the rectangular tube can be attached to a condenser tube through which cold water passes. As all the water in the flask evaporates, the impurities or the solid substance will remain behind in the flask and pure water will be deposited in the beaker.

(a) In ironing a shirt, you first press the cuffs and the sleeves. You then press the collar, inside and outside. After that you ……………….
Answer:
While ironing a shirt, first we press the cuffs and then the sleeves. We then press the collar on both sides with the iron. Then we can press the front part and then | the back ……………….

CHSE Odisha Class 11 English Writing Description

Activity 24

Describe the following simple processes.
(a) how to make a glass of lassi
(b) how to make a booking for a berth in a reserved compartment (on a train)
(c) how to clean and polish your shoes
(d) how to cook rice
(e) how to send a letter by registered post

Answer:
(a) how to make a glass of lassi:
1. First, take the required amount of curd and milk.
2. Pour them into the jar of the mixer.
3. Add ice cubes and sugar (to your own taste) to it.
4. Then churn and grind it in the mixer using the whipper till the mixture of curd, milk sugar and ice, foam is.
5. Pour it back into a glass.
6. Top ft with garnished coconut, cream, ground cashew nut, bournvita powder or cocoa powder and dried grapes.
7. The lassi is now ready.

(b) how to make a booking for a berth in a reserved compartment (on a train):
1. Procure a reservation slip/form from the reservation counter at the railway station or city booking centres.
2. Fill in the form giving details of the train you want to travel, the class you want to travel to, the date of your journey, your name, age, sex and preference for lower, middle or upper berth.
3. Then give this reservation slip/form to the reservation clerk.
4. The clerk will then check on his computer to find out whether a berth is available on the train and on the particular date you asked for.
5. After finding the availability if it is available, he will print the details on the ticket and pass it to you asking you the fee for it.
6. If the clerk finds that no berth is available, he will tell you what other options are available and you can fill out a new reservation slip with the options available and thereby start the whole process again.

(c) how to clean and polish your shoes:
1. First bring a cherry blossom or a polishing cream (white or black).
2. Use a soft polishing brush for cleaning the dust and dirt.
3. Apply the cherry cream on the brush.
4. Polish the shoes slowly and continuously for some time so as to give them a shining colour.
5. Then apply the cream for a better glaze on the shoes.

(d) how to cook rice:
1. Clean the rice off stones, chaff and burnt rice.
2. Then clean it with water.
3. After this take water that is twice the volume of rice you have taken and set it to boil on the stove in a pot or vessel.
4. When you notice the water boiling, pour the rice into it.
5. Keep it over the fire till the grains of rice become soft.
6. Then drain the water from the pot, so that the cooked rice is left behind ready for consumption.

(e) how to send a letter by registered post:
1. Procure an envelope of the size required by you from the stationery shop.
2. Put the letter inside it and seal it with gum or cello tape.
3. Then write the name and address of the person you want to send it to on the right-hand side of the envelope. Add your name and address to the envelope in the left bottom corner.
4. Take it to the post office and hand it to the registration clerk. He will weigh it and tell you how much stamp it requires. Buy the required amount of stamp from him and paste it on the envelope.
5. Then hand it back to him. He will enter it in a registration journal, write the registration number and date on the envelope and put his Initials on it. He will then hand you a receipt for the letter he received from you.
6. The registration work is done.

Read the following description of a hill station.

(a) Ootacamund, or Ooty (as it is popularly known), which nestles in the Nilgiri Hills, lies on the borders of Kerala, Tamil Nadu and Karnataka. Tourists from both home and abroad flock to this beautiful little hill station for a holiday. The most prominent attraction for them is the Botanical Garden, which was established in 1847. A variety of exotic and ornamental plants adorn this garden. The chief attraction of the garden is a fossil tree trunk which is 20 million years old. A small lake runs through the garden. The government organises in this garden a flower festival in May every year.

(i) What is Ootacamund’s other name? Where is it situated?
(ii) What is its main attraction?
(iii) Where is the lake?
Answer:
(i) Ootacamund’s other name is Ooty. It is situated in the Nilgiri Hills which . “ lies on the borders of Kerala, Tamilnadu and Karnataka.
(ii) The most prominent attraction is the Botanical Garden, which was established in 1847.
(iii) The lake runs through the Botanical Garden of Ooty.

Can you draw up an outline of the passage above and how the description progresses?
Answer:
Paragraph 1: Popular name and location of Ooty – a tourist spot.
Paragraph 2: The Botanical Garden – the most prominent tourist spot.
Paragraph 3: The lake and the flower festival
Now read another description of a place of tourist interest in India.

(b) Junagadh is an ancient city in Gujarat. It is situated among the shadows of Mount Gimar. The name “Junagadh”- Juna (old) and Gadh (fort)- literally means “old fort”. On the outskirts of the city, there is a dark basalt rock. It stands on the way to Mount Gimar. The rock holds the inscriptions of three mighty dynasties. They include the Maurya and Gupta dynasties. The inscriptions are in Sanskrit.

Notice some keywords and phrases used in the descriptions.
existence: Ooty lies on the borders of Kerala, Tamil Nadu and Karnataka,
location: on the outskirts of the city there is a dark basalt rock.

CHSE Odisha Class 11 English Writing Description

Activity 25

Describe the following places, highlighting their size, location and type. Also, mention the interesting or outstanding features of each place.
(a) Your home town or village
(b) An important place you have visited
(c) Your college

Answer:
(a) My Village :
My village, Mahendragiri is situated in the Gajapati district. It is one-hundred and eighty km away from the silk city, of Berhampur. To reach my village one has to take a bus from Berhampur and after the Tapta Pani Ghat take the route leading to Ramgiri Udayagiri. This place was in the news recently because of communal clashes. Mahendragiri is just 60 km away from R. Udaygiri. The village is situated at the foot of the Mahendra Hills and hence it is called Mahendragiri.

The whole village consists of a cluster of huts, asbestos roof houses and a few concrete buildings. It has only two sahis namely the Nuasahi and the Puranasahi. These sahis are situated one after the other. When one approaches Mahendragiri from R. Udayagiri, one will first see the Nuasahi and after that the Puranasahi. Each ship has rows of houses facing each other. Thus in Nuasahi, we have two rows of houses facing each other and in Puranasahi too there are two rows of houses facing each other.

There are only 200 families living in the whole village. The village has only one main road, the state highway which comes from Berhampur goes past R. Udayagiri to our village Mahendragiri and then continues upto Parlakhemundi, the district headquarters of Gajapati district, which is just 20 km from our village. Nuasahi which is in the south of Berhampur is surrounded by a huge mango grove and tamarind trees.

Puranasahi which is on the north of Parlakhemundi is bordered by cashew-nut plantations. Beyond the mango grove and the cashew, plantation lie the hills. On the top of a hill is a Shiva temple. It can be reached after climbing 480 steps. The temple is a very ancient one. It is now almost in ruins because of a lack of maintenance. Nevertheless, one can see the crude Shiva Lingam in the inner sanctuary always covered with fresh flowers.

The view from the temple courtyard is thrilling. One can see the streams flowing down on the rear of the hill. The sahis looked like tiny rows of toy houses. T.V. antennas look like minute clothes hangers and the mango grove and casuarina trees look like beds of cauliflowers. 3 km away from the village, on the road to Parlakhemundi is our marketplace. It does not have any permanent shops but only rows of rectangular concrete platforms on which businessmen put up their shops.

The market meets on three days of the week, Monday, Wednesday and Friday. It is a very colourful market where one can get everything necessary. Beyond the market is a thick jungle. On the hills, one can also see patches of barren land. This is because the farmers of our village practice shifting cultivation. Some of the plants on the hill are seen as half burnt. Some are already yellow with the flowers of the mustard.

(b) An important place I have visited :
One of the most important and unforgettable places that I have ever visited is the Taj Mahal at Agra. I have not seen anything else that surpasses the beauty of this marble mausoleum. Built by Shah Jahan, as a tomb for his wife and as an enduring symbol of his love, the Taj Mahal is true “an elegy in stone.” It has a gateway of red stone with verses from the Quran inscribed on it.

The gateway leads to a garden with three pathways. Besides that, there are fountains and pillars that lead to the marble platform at whose four comers are four towers or minarets. In the middle is the main dome with two smaller domes flanking it on either side. The red and white marble walls are decorated with stones of various colours encrusted in them. Their insides too are covered by flowers wrought in stone and lace work of green foliage.

The hall of death has a verse inscribed on it. Words cannot describe the splendour of the Tajmahal in the moonlight. It glitters and appears radiant as a bride. Moreover, the large rooms, cool ambience and solitariness about it, give it a sober air whereby one becomes reverential and meditative.

(c) My college :
My college is situated on the National Highway No.5 between Cuttack and Bhubaneswar on the outskirts of our village Kamalpur when proceeding towards Cuttack. It is a red-brick, single-storeyed straight-line building that faces the East. It is constructed only on an acre of land which is marked by a similar red-brick boundary wall that has only one gate which opens onto the highway. The gate has a gravel path which leads to the portico of the college building.

Immediately after the portico is steps which lead to the principal’s office. On the right of the principal’s office is the staff common-room, while to its left is the Administrative Office of the college. All three are housed in single rooms. Beyond the staff common- room and the administrative office on both sides are the stores, the right one storing sports equipment while the left one has stationary. Following the sports store on the right are the classrooms. There are three classrooms in all for 1st Year Arts students.

Similarly on the left beyond the stationeries store are three classrooms for 2nd year Arts students. Beyond the boundary wall, on every side are paddy fields. It is interesting that the college itself has been constructed on an erstwhile paddy field donated by a farmer whose son is one of the teachers in the college. Thus in the rainy season the earth there does not absorb water and as a result, we often have 2-3 ft. of standing water in the College compound. One can even fish inside the college during rainy reason.

CHSE Odisha Class 11 English Writing Description

Activity 26

Describe the place shown in the picture below.

Describe the place shown in the picture below.

Answer:
It was a wonderful and picturesque sight just like a picture postcard. A waterfall nestling among the mountains peopled by the evergreen pines standing tall on the mountains. The water cascaded down the fall spraying itself into the air looking like tiny globules of diamond and then crashing into the rock below where it turns into white foam and then cascades down the mountain forming divergent streams that end up in a rivulet.

Activity 27

Describe the following people of our country and the places they live in.
(a) The Kashmiris
(b) The Sikhs
(c) The Santals

Here are some helpful points for (a)
(i) Live in the valley of Kashmir, fair complexion, tall, long noses, about 5 million people
(ii) Very cold winters – snow, frozen lakes, poorly heated mud houses, individual firepots. Woollen clothes, long gowns and rubber shoes
(iii) Food: meat, fish and rice; fruit (apples, pears, peaches, cherries, etc.); Drink: a lot of tea with or without milk
(iv) handicrafts: carpets, silk, wood carvings, etc.
(v) well-known tourist spots: Shalimar Gardens, Gulmarg, Dal lake, etc.

Answer:
(a) The Kashmiris:
The Kashmiris are a fair complexioned people most of who live in the valley of Kashmir which lies in the north of India. They usually have tall and long noses. They experience very cold winters because of snow, frozen lakes and badly heated mud houses. To get rid of the cold, they wear woollen clothes, long gowns and rubber shoes. However, most of the population is poor and hence they live in poorly heated mud houses but each of them has separate firepots. The majority of the Kashmiris are Muslims. As a result, most men wear caps while women are veiled. They wear purdah. This is of course more common among the orthodox folk.

The Kashmiris are mostly non-vegetarian people eating meat, fish and rice. They also consume fruits like apples, pears, peaches, cherries etc. and drink a lot of tea. Their main occupation is handicrafts. Whole families including young children are engaged in weaving carpets, silk clothes, wood carvings etc. all of which are exquisitely done. The main revenue, however, comes from tourism. Kashmir which is considered earth’s paradise has many famous tourist spots like the Dal Lake, Shalimar Gardens and the Gulmarg. Terrorism has however decreased tourist trade in recent times.

(b) The Sikhs :
The Sikhs are the residents of Punjab but over the years they have migrated to almost all the states of India and to many countries abroad. Sikhism began as a socio-religious movement which was more interested in fighting evils but in its process of evolution, it was forced by circumstances to become a militant sect. It was Guru Gobind Singh who transformed the Sikhs into a militant sect and created Khalsa. The Sikh people are easily distinguishable by the turban they put on. Every Sikh is bound by the laws of his religion to never have his hair cut.

Men, therefore, tie their hair in a plait, bind it on the head and wear a turban upon it. Besides this, all Sikhs who are part of the Khalsa are armed with a Kirpan and put on a steel bangle called Kada. Most men are dressed in long Kurtas that reach down to the knees and pyjamas. Women are dressed in salwar kameez. The Sikhs are very hard-working and industrious people. They mainly cultivate wheat, rice, maize, gram and pulses. They produce the largest amount of wheat in India.

Unlike other States, the Sikhs use all mechanised equipment for agriculture and adopt the latest techniques and methods of production. Besides this, they are engaged in several industries like bicycle parts, auto parts, sports and leather goods, hosiery, knitwear, footwear, nuts and bolts, textiles etc. Most Sikhs eat roti or parathas along with Makhan, and dal and drink large glasses of milk. They celebrate the birthdays of their Guru by offering prayer and distributing sweets. The important tourist centres and places of worship in Punjab are the Golden Temple at Amritsar, the Durgiana Mandir, the Anandpur Sahib and the Jalianawala Bagh.

(c) The Santhals :
The Santhals or Santals are an indigenous aboriginal tribe inhabiting Bihar and some parts of Orissa. They lend their name to the Santhal Pargana district of Bihar, which is known after them. They are short dark-skinned people having broad noses, thick lips, coarse and curly hair and very prominent cheekbones. Their main occupation is cultivating and cattle breeding. Most of them are uneducated and illiterate and rarely mix with mainstream society. They are also good hunters.

They are animistic in their beliefs and enjoy sexual liberty practising polyandry and polygamy. Their dialect is called Santali. They live in mud houses short in height. But their villages are extremely clean. The Santals have an elaborate tribal structure, with 12 exogamous clans. More over, each village has its cadre of village officials the head of whom is the chief.

CHSE Odisha Class 11 English Writing Description

Activity 28

Describe how the Money Order which you send reaches the addressee.
Answer:
The money order form is first filled up and the money to be sent as well as the amount of exchange is given to the postal clerk who gives a receipt in return. It is understood that a customer has commissioned money to be sent to a customer in another place for paying a sum for the service. The postal clerk thus sends this form to the post office where the addressee is to be found. This is taken as a direction by that post office to pay the sum to the addressee, which is done by a postal peon.

Activity 29

Write about 150 words on each of the following :
(a) A peacock
(b) A cat
(c) An elephant

Answer:
(a) A Peacock :
The male peacock is a beautiful bird. Its neck is covered with lovely blue feathers. Its body is green and blue. Its glory is its long tail. It can open its tail like a great fan. The colours are blue and green and gold. The bird is very proud of its tail. It opens it, and struts about to be admired. The peacock stands for pride. We say, “as proud as a peacock”. The lady peacock is a plain brown bird. She has no tail like her husband. He has all the beauty.

In India, peacocks are sacred birds. The peacock is called the mount of Saraswati, the goddess of learning. So it is very wrong to kill a peacock. But peacocks are great thieves. They do great damage to growing crops. Some people say that peacocks kill snakes. Some say they can smell the coming rain. Then they give harsh screams.

(b) A Cat :
People keep cats as pets. Cats are pretty animals, covered with soft fur. They are of different colours. Some are black, some white, some grey, and some brown. Kittens, or young cats, are very playful. They will play for hours with little balls, fallen leaves, or bits of string. The chief use of cats is to catch mice and rats. Like their big cousins, lions and tigers, cats can see in the dark. They hunt for mice at night. Mice are a great pest in a house. A cat will soon kil them, or drive them away.

Cats have been tamed for thousands of years. They were kept as pets in ancient Egypt. Cats are very different from dogs. Dogs love persons, but cats love places. A dog will follow his master anywhere. But a cat loves the comfort of the house and stays at home. Their love is what we call “cupboard love”.

(c) An elephant :
The elephant is the largest of all animals. It is a strange animal to look at. It has thick legs, huge sides and back, large ears, small eyes, a short tail, and great white tusks. Its long nose, or trunk, is the strangest thing about it. It uses its trunk like a hand. It picks things up with its trunk and puts them into its mouth. It sucks up water with its trunk and squirts it into its mouth for drinking.

Elephants are very strong. And they are very clever. So tame elephants are very useful. They are trained to draw heavy loads. They are taught to carry logs of wood on their tusks and pile them up in perfect order. They are used, too, in hunting tigers in the jungle. In old days they were used in battle. And Indian Rajas ride on elephants in state processions.

CHSE Odisha Class 11 English Writing Description

Activity 30

Write short paragraphs on :
(a) A refrigerator
(b) A screwdriver
(c) A motorcycle

Answer:
(a) A refrigerator :
A refrigerator is a common household electrically powered equipment/appliance that is used to chill or freeze food items for preservation. It consists of an outer metal cabinet or box, rectangular in shape and an inner polyurethane foam lining (pdf) to ensure zero gaps, insulation and provide no space for insects to breed. Its size ranges from 165 litres to 310 litres. Its inside can be cooled to temperatures as low as – 16°C.

The cooling is affected by a thermostat which controls the temperature inside the refrigerator as well as of the freezer compartment. The cabinet contains a separate freezer compartment in which ice can be formed and food kept frozen. The freezer also has ice trays with which ice cubes are made. Below it is the chill tray which is used to store soft drinks as well as milk jackets for quick cooling. Besides, the cabinet may have adjustable shelves, which are found mostly in domestic refrigerators.

In which vessels of different sizes can be accommodated to store cooked food, jellies, pies etc. Right below is the San crisper which is a compartment for storing leafy vegetables and fresh fruits. The door inside also has a dairy compartment for cheese and butter, removable egg racks and adjustable bottle racks. Today frost-free refrigerators are available.

(b) A screwdriver:
A screwdriver is a common tool used for turning screws. It consists of a metal rod that is fixed in a wooden, plastic or rubber groove that has been moulded into a handle grip. The rod is chiselled in the front to facilitate its getting into the groove of the screw. The rod varies in length and diameter.

(c) A motorcycle :
Motor cycle is one of the most popular means of conveyance. Now different brands are manufactured by different companies. Each of them has a distinctive feature. The motorcycle consists of various parts, such as a handle, brake, fuel tank, silencer pipe, engine (two-stroke/four-stroke) carburettor, clutch lever, speedometer, two tyres, indicator (front and rear), and battery compartment. These parts are systematically set in the bike’s comfortable seat, headlight, shock absorber and so on.

Four-stroke motor-bike is superior to a two-stroke one because the former has smooth pick-up. Besides, it doesn’t produce defeaning sound. On the other hand, the motorbike has a two-stroke engine that doesn’t have that smooth pick-up. It produces sound. The fuel consumption of a four-stroke engine is better than that of a two-stroke engine. The former is economical. Replacement of engine oil at the scheduled time is of great importance. Now wherever we notice, we see varieties of wonderful bikes playing on the road.

CHSE Odisha Class 12 English Grammar The Passive

Odisha State Board CHSE Odisha Class 12 Invitation to English 4 Solutions Grammar The Passive Textbook Activity Questions and Answers.

CHSE Odisha 12th Class English Grammar The Passive

Section -1

We can use English sentences either in active or passive voice. But we have a wrong notion that all the active sentences can be passivized and vice versa. While it is possible to express most ideas both in the active or the passive voice, some constructions are natural only in the active and a few others only in the passive.

The passive voice is normally used for one of the following reasons.
1 . The active subject (or the doer/agent of the action) is unknown or cannot be easily identified.
His father was killed in World War- II.
(The killer or his father is unknown/or difficult to identify)

2. The active subject or agent is evident from the context.
Mr Amitabh Bachchan was elected Member of Parliament.
(The active subject/agent (i.e. the people of a particular constituency) is well known from the context.

3. There may be a special reason for (fact, delicacy of sentiment or fixing responsibility) not mentioning the active agent.
The matter has been referred to an expert committee.

4. Where greater interest is taken in the subject of the passive.
His mother was run over by a truck.

5. In scientific discoveries, inventions, observations, public notices etc. we use passive sentences. Now mark how we can transform an active sentence into a passive construction. We normally take the help of the following steps to make a sentence from active to passive voice.
(i) Make the object of the active sentence the subject of the passive.
(ii) Change the active verb into the passive equivalent by using be-verb + past participle form of the main verb.
(iii) Decide whether the subject of the active sentence is to be included or deleted in the passive sentence. If included, it should be put after the preposition ‘by’.

This ‘by-phase’ is used (i) when the agent is an important person (ii) when the agent is an indefinite person or thing, (iii) when the agent is an inanimate (non-living object or thing and is regarded as something unusual or unexpected).
In present-day English, ‘by-phrase’ is normally avoided/omitted in passive sentences.
We use a ‘by-phrase’ when the speaker/writer wants to give emphasis on the active subject/agent.

CHSE Odisha Class 12 English Grammar The Passive

Activity -1
Change the sentences below into their passive forms.
1. The Head Master punished the student.
2. Foolish men build large houses.
3. The umpire declared the batsman out.
4. Did Vibhishan betray Ravana?
5. Van Gogh did not paint this picture.
Answers
1. The student was punished by the Head Master.
2. Large houses are built by foolish men.
3. The batsman was declared out by the umpire.
4. Was Ravana betrayed by Vibhisan?
5. This picture was not painted by Van Gogh.

Activity- 2
Change the voice of the sentences below.
1. The dates for polling have been announced by the Election Commission.
2. Oriyas living in America have sent fifty crores for relief work.
3. The party has chosen a new president.
4. The plane was hijacked by five terrorists.
5. Can this cheque be cashed by my brother?
Answers
1. The Election Commission has announced the date for polling.
2. Fifty crores has been sent by Oriyas living in America for relief work.
3. A new president has been chosen (by the party).
4. Five terrorists hijacked the plane.
5. Can my brother cash this cheque?

Section -2

When do we use the passive?
The rules
The rules for changing the active voice into the passive voice are reliable, up to a point. However, it is wrong to think that every active sentence can be changed into the passive form. The passive voice is used in special situations, in which it would not be appropriate to use the active voice. It is important to know what these situations are.

What the “subject” of the sentence does?
We said above that the first rule for changing an active sentence into its passive form is to make the object of the active sentence the subject of the passive sentence. But why do we do this?
Every sentence must have a subject, which comes at or near the beginning of the sentence, before the verb. The subjects in the following sentences are printed in bold letters. Each sentence also contains an object, which is printed in italics.
1. The boys fed the lions in the zoo.
2. The kind old gentleman gave the blind beggar ten rupees
3. Bhima killed Dushashana in a fight.
4. The cyclone destroyed two thousand villages.

CHSE Odisha Class 12 English Grammar The Passive

The subject, in each of these sentences, has two function.
(a) It introduces the topic that the speaker is going to talk about.
(when we hear the opening words of sentence 1, “The boys…” we know that the speaker is going to tell us something about the boys. The rest of the sentence tells us what the speaker has to say on this topic.)
(b) The subject also refers to the person or the thing that performs the action indicated by the verb. In other words, the subject is the “doer” of the action, or the agent that performs the action.

What about the object?
The object refers to the person or thing on which some action is performed by the agent (subject). Notice what happens when we change an active sentence into a passive sentence.

Example
The policeman arrested the thief, (active)
The thief was arrested by the policeman. (passive)

In the active sentence, the subject (policeman) represents the agent who performs the action, as well as the topic. Here, the speaker seems to be interested mainly in the policeman and what the policeman did.

But in the passive sentence, the agent (policeman) is no longer the subject or the topic. Instead, thiefbtcom&s the topic. The speaker seems to be more interested now in the thief and what happened to him than in the policeman, who is pushed into the background. So, when we turn an active sentence into its passive form, the effect is to turn the “spotlight” away from the agent. The passive is used when we are more interested in the action that is performed than in the agent that performs the action. This can happen in the following situations.

(a) when the speaker does not know the identity of the agent or is not sure of it, e.g.:
My bicycle has been stolen.

(b) when it is not necessary to mention the agent, because it is obvious who the agent is, e.g.:
The earth was created many millions of years ago.
The accused was tried in court and sentenced to prison.

(c) when the speaker does not want to mention the agent, for some reason, e.g.:
I have been cheated.

(d) when the speaker does not wish to offer a personal opinion, but wants to sound formal and objective, e.g.:
It is believed that no life exists on the planet Mars.

The agent is not mentioned in the majority of passive sentences. However, the agent must be mentioned (together with the preposition by) in the following contexts :
(a) when the agent is an important person- an inventor, an artist, a writer, a famous personality etc., e.g.:
1. ‘Chandrabhaga’ was written by Radhanath Ray.
2. The bridge will be opened by the Chief Minister.
3. The ratio was invented by Marconi.

(b) when the agent is someone or something that is unexpected, e.g. :
1. All the work in this factory is done by robots.
2. The man was killed by a tiger.

CHSE Odisha Class 12 English Grammar The Passive

Section – 3

The uses of the passive.
Passive sentences are more commonly used in writing than in speech. The use of the passive is particularly common in scientific and technical writing, e.g. reports on experiments, descriptions of scientific processes, etc. Passives are also frequently used in official documents, where rules and regulations are laid down.
Here are some examples.
1. Payment can be made at any bank.
2. The liquid is heated to boiling point.
3. All lights are switched off at 11 p.m.
4. Sensitive data should not be fed into this computer.
5 . Sugar is exported to Japan.

Activity – 3
Use the verbs (given in brackets) in the correct form.
(a) Originally, this novel (write) __________ in Hindi, but it (translate) _________ into Oriya in 1985.
(b) Cheese (make)- from milk.
(c) There was an accident this afternoon. Somebody called an ambulance but as nobody (injure) _________ the ambulance (not require) ________.
(d) The office is in a mess. The telephone (never answer)__________, no proper records (keep) __________ and worst of all, no reports(write)__________.
(e) A three-year-old girl who hid in a sack while her mother was picking potatoes (run over) _________ by a tractor at a farm in Karnataka.
(f) A tree is lying across the road. It (blow down)____________ in the storm.
(g) The letter (post) _________ a week ago and it arrived yesterday.
(h) Two people (report) ___________ injured in a bomb explosion at a factory in Calcutta early this morning.
(i) A new museum (build) _________ in the city. Work started last year and the museum (expect) ___________ to open next year.

Answers
(a) Originally, this novel was written in Hindi, but it was translated into Oriya in 1985.
(b) Cheese is made from milk.
(c) There was an accident this afternoon. Somebody called an ambulance but as nobody was injured, the ambulance was not required.
(d) The office is in a mess. The telephone is never answered, no proper records are kept and worst of all, no reports are written.
(e) A three-year-old girl who hid in a sack while her mother was picking potatoes was run over by a tractor at a farm in Karnataka.
(f) A tree is lying across the road, it is blown down in the storm.
(g) The letter was posted a week ago and it arrived yesterday.
(h) Two people are reported injured in a bomb explosion at a factory in Calcutta early this morning.
(i) A new museum is being built in the city. Work started last year and the museum is expected to open next year.

CHSE Odisha Class 12 English Grammar The Passive

Activity- 4
Rewrite the following newspaper report using passive forms of the verbs.
Thieves held the manager of the Taj Hotel at gun point last night during a daring raid in which they took nearly Rs. 500,000 from the hotel safe. They also broke into several of the bedrooms and removed articles of value.
The thieves made their escape through the kitchen, where they damaged several pieces of equipment. They injured the chef when he tried to stop them and left him lying unconscious on the floor. Police arrested the thieves early this morning.
Answers
1. The manger of the Taj Hotel was held at gun point last night.
2. Nearly Rs. 5,00,000 was taken from the hotel safe (by them).
3. Several of the bedrooms were also broken into (by them).
4. Articles of value were also removed.
5. Several pieces of equipment were damaged by them.
6. The chef was injured by them when he tried to stop them.
7. He was left unconscious on the floor.
8. The thieves were arrested (by the police) early this morning.

Activity- 5
The following is a part of a newspaper report. Use the verbs supplied in the blank spaces, in their appropriate forms.

(a) In Bhubaneswar yesterday a shopkeeper (force) ________ to hand over Rs. 10,000 after (threaten) ________ by a man with a knife. The man escaped in a car which (steal) _________ earlier in the day. Later, the car (find) ________ in a garage where it (abandon)- by the thief. A man who (suspect) _________ of (involve) __________ in the robbery (arrested) _________ and (question) _________ by the police.

(b) The state library (damage) __________ in a fire last Sunday. The fire, which (discover) _________ at about 11 p.m., spread very quickly. Nobody (injure) __________ but two people had to (rescue) __________ from a room upstairs. A number of valuable books (bum)__________. It (not know) __________ how the fire started.

Answers
(a) In Bhubaneswar yesterday a shopkeeper was forced to hand over Rs. 10,000 after being threatened by a man with a knife. The man escaped in a car which was stolen earlier in the day. Later, the car was found in a garage where it was abandoned by the thief. A man who was suspected of being involved in the robbery was arrested and questioned by the police.

(b) The state library was damaged in a fire last Sunday. The fire, which was discovered at about 11 p.m., spread very quickly. Nobody was injured but two people had to be rescued from a room upstairs. A number of valuable books were burnt. It was not known how the fire started.

Activity- 6
Mrs. Mohanty went out for a while. When she came back, she soon realised that someone had been in the room while she was away. Given below a list of the things that had been disturbed. Write sentences to describe the room, using the following hints.

bookcase/move door/open wall clock/remove
food on the table/eat candle/light record player/smash
window/close flower vase/break television/switch off

Answers
1. The bookcase had been moved.
2. The food on the table had been eaten.
3. The window had been closed.
4. The flower vase had been broken.
5. The door had been open.
6. The candle had been lighted.
7. Television had been switched off.
8. The wall clock had been removed.
9. The record player had been smashed.

CHSE Odisha Class 12 English Grammar The Passive

Activity- 7
Do you know how to prepare a cup of tea, using a tea bag? If you don’t, you can follow the ‘recipe’ (pronounced re-si-pi) below.
A recipe is a set of instructions which you follow when you are preparing some food. Usually, recipes are given in the form of “commands”, using sentences in the active form. The following recipe for making tea is an example.
1 . Use one tea bag to make each cup of tea.
2. Place the required number of tea bags in a kettle.
3. Add boiling water.
4. Stir the water, but make sure that the tea bags do not open up.
5. Allow the tea to stand for four minutes.
6. Pour the tea into cups.
7. Add sugar and milk to taste

The instructions in the recipe can be re-written, using sentences in the passive form. What you get now is a description of a process. Write the recipe given above, using sentences in the passive form. The first sentence has been done for you.

How tea is made, using tea-bags
Answers
1. One tea-bag is used for making each cup of tea.
2. The required number of tea bags are placed in a kettle.
3. Boiling water is added.
4. The water is stirred, but make sure that the tea bags do not be opened up
5. The tea is allowed to stand for four minutes.
6. The tea is poured into cups.
7. Sugar and milk is added to taste.

Activity-8
When you become a member of a library, you are supposed to obey certain library rules. Rules are generally stated in sentences using the passive form.
Here is a list of “Dos” and “Don’ts” for users of public library. Can you turn them into library ruels, using the passive?
Dos
1. You should maintain strict silence inside the library.
2. You must bring your membership card with you when you visit the library.
3. You must leave your bags, books, note-books, etc. at the checking counter, outside the library.
4. You should ask the librarian to help you in case you are unable to find a book
Answers
1. Strict silence must be maintained inside the library.
2. Your membership card must be brought (required) when you visit the library.
3. Your bags, books, note-books, etc. must be left/kept outside the library, at the checking counter.
4. The librarian may/should be asked to help you in case you are unable to find a book.

Don’ts
1. You mustn’t write anything inside a book which you borrow from the library.
2. You shouldn’t damage the book in any way.
3. You mustn’t keep the book longer than the due date.
4. You shouldn’t lend the book to anyone who is not a member of the library.
Answers
1. Anything inside a book mustn’t be written which you borrow from the library.
2. The book shouldn’t be damaged in any way.
3. The book mustn’t be kept longer than the due date.
4. The book shouldn’t be lent to anyone who is not a member of the library

CHSE Odisha Class 12 English Grammar The Passive

Multiple-Choice Questions (MCQs) with Answers

1. We ____________ by a loud noise during the night.
(A) woke up
(B) are woken up
(C) were woken up
(D) were waking up
Answer:
(C) were woken up

2. There’s somebody walking behind us. I think ___________.
(A) we are following
(B) we are being followed
(C) we are followed
(D) we are being following
Answer:
(B) we are being followed

3. ‘Where ?’ ‘In London.’
(A) were you born
(B) are you born
(C) have you been born
(D) did you born
Answer:
(A) were you born

4. The train __________ arrive at 11.30 but it was an hour late.
(A) supposed to
(B) is supposed to
(C) was supposed to
(D) none of these
Answer:
(C) was supposed to

5. Where________ ? Which hairdresser did you go to?
(A) did you cut your hair
(B) have you cut your hair
(C) did you have cut your hair
(D) did you have your hair cut
Answer:
(D) did you have your hair cut

6. I don’t like ______________by others.
(A) be laughed
(B) being laughed
(C) to be laughed
(D) to have been laughed
Answer:
(B) being laughed

CHSE Odisha Class 12 English Grammar The Passive

7. They __________ to go there.
(A) are made
(B) are making
(C) have made
(D) should make
Answer:
(A) are made

8. Accidents ___________ by negligence.
(A) are made
(B) must be made
(C) made
(D) none of these
Answer:
(A) are made

9. I ________to all.
(A) am knowing
(B) am known
(C) have known
(D) none of these
Answer:
(B) am known

10. Where ___________ your kites?
(A) you are flying
(B) are you flying
(C) you have to fly
(D)none of these
Answer:
(B) are you flying

CHSE Odisha Class 12 Math Solutions Chapter 7 Continuity and Differentiability Ex 7(l)

Odisha State Board Elements of Mathematics Class 12 CHSE Odisha Solutions Chapter 7 Continuity and Differentiability Ex 7(l) Textbook Exercise Questions and Answers.

CHSE Odisha Class 12 Math Solutions Chapter 7 Continuity and Differentiability Exercise 7(l)

Question 1.
If y = tan-1 x Prove that (1 + x2) y2 + 2xy1 = 0
Solution:
y = tan-1 x ⇒ y1 = \(\frac{1}{1+x^2}\)
⇒ (1 + x2) y1 = 1
⇒ (1 + x2) y2 + 2xy1 = 0

Question 2.
If 2y = x (1 + \(\frac{d y}{d x}\)) show that y2 is a constant.
Solution:

CHSE Odisha Class 12 Math Solutions Chapter 7 Continuity and Differentiability Ex 7(l) Q.2

CHSE Odisha Class 12 Math Solutions Chapter 7 Continuity and Differentiability Ex 7(l)

Question 3.
If y = ax sin x show that x2y2 – 2xy1 + (x2 + 2) y = 0
Solution:
y = ax sin x
⇒ y1 = a sin x + ax cos x
⇒ y2 = a cos x + a cos x – ax sin x
= 2a cos x – ax sin x
Now x2y2 – 2xy1 + (x2 + 2)y
= 2ax2 cos x – ax3 sin x – 2ax sin x – 2ax2 cos x + ax3 sin x + 2ax sin x = 0

Question 4.
If y = \(e^{m \cos ^{-1} x}\) (1 – x2) y2 – xy1= m2y
Solution:
y = \(e^{m \cos ^{-1} x}\)
⇒ In y1 = m cos-1 x
⇒ \(\frac{1}{y}\) . y = \(\frac{-m}{\sqrt{1-x^2}}\)
(\(\sqrt{1-x^2}\)) . y1 = -my
⇒ (1 – x2) (y1)2 = m2y2
⇒ (1 – x2) 2y1y2 – 2x (y1)2 = 2m2yy1
⇒ (1 – x2) y2 – xy1 = m2y

Question 5.
If x = sin t, y = sin 2t then prove that, (1 – x2)\(\frac{d^2 y}{d x^2}\) – x\(\frac{d y}{d x}\) + 4y = 0
Solution:
x= sin t, y= sin 2t
CHSE Odisha Class 12 Math Solutions Chapter 7 Continuity and Differentiability Ex 7(l) Q.5

CHSE Odisha Class 12 Math Solutions Chapter 7 Continuity and Differentiability Ex 7(l)

Question 6.
If y = \(\left(\sin ^{-1} x\right)^2\) , prove that (1 – x2) y2 – xy1 – 2 = 0
Solution:
CHSE Odisha Class 12 Math Solutions Chapter 7 Continuity and Differentiability Ex 7(l) Q.6

Question 7.
If y = tan-1 x, Prove that (1 + x2) y2 + 2xy1 = 0
Solution:
Same as No. 1

CHSE Odisha Class 11 English Writing Narration

Odisha State Board CHSE Odisha Class 11 Invitation to English 3 Solutions Writing Narration Textbook Activity Questions and Answers.

CHSE Odisha 11th Class English Writing Narration

There are different ways of developing a paragraph depending on the topic and the purpose of writing. We shall study some of those ways now and in a subsequent chapter, we will develop our ideas into a longer piece of writing in the same light. We will also learn to mix different ways of developing our ideas into one or more paragraphs.

The common ways of developing paragraphs are :
(i) Narration – To tell an event, incident., or experience in chronological order.
(ii) Description -To describe a person, animal, object, place or process.
(iii)Exposition – To explain an idea, instrument, or problem.
(iv)Argumentation or persuasion -To argue for or against a view, in order to influence the reader’s opinion.

Narration

Read the following paragraph and see how the sentences have been arranged.

On Sunday morning, I get up at six in the morning. After a quick wash, I get into my jogging rig and go for a run. By 6.30 I am on the road. I run half an hour. I return home and have a leisurely bath, a luxury. I cannot afford it on weekdays. The bath is over, and I get ready quickly. What have you done? You have described your activities on a Sunday morning, in the order in which they take place.

You start with what you do first, then go on to what you do next, and so on and you come to your last activity. This brings you to the most important thing about a narrative paragraph. In a narrative paragraph, the events or happenings are arranged in chronological order, that is, in order of time.

CHSE Odisha Class 11 English Writing Narration

A. Narrative Passage

A. Account of Events with Sequence of Action:
It was late in the evening. The bride’s place was richly illuminated and decorated. There was music and dancing all around. Around half past 10, the bridegroom’s procession arrived and there was a flurry of excitement. The bridegroom was sitting erect on a young horse. The bride’s parents came out to receive the bridegroom and the bride was brought out too, her face covered with a pink and gold veil. She was barely 18. But, suddenly, without any provocation, the horse broke away from his master’s grip and ran away taking the bridegroom with him.

The bridegroom shouted for help and clung on to the horse for dear life. Soon his turban fell off, revealing his sparse white hair flying in the breeze. “He was too old to marry”, everyone concluded. He couldn’t be less than 70. The young bride stood aghast. Turning to her parents she cried aloud, “He’s old ! He’s a doddering old man ! I won’t marry him”. Tearing off her finery she stormed back into the house. And the old man was taken to hospital with multiple fractures.

B. A Different point of view:
At last, we reached the bride’s place. It was well lighted and there was music and dancing all around. The atmosphere was exciting and I liked it. The bride’s parents came out to receive the bridegroom and then the bride was brought too, her face covered with a pink and gold veil. I stood on the tips of my hooves to get a better view of her. Suddenly the veil on her face blew up in the breeze and I had a glimpse of her face. I was shocked.

She was only a child! She couldn’t be more than 18. And she was about to marry a man old enough to be her grandfather! “Something is seriously wrong”, I thought. “This marriage must be stopped! I then looked sly at my master. He was looking the other way. Without losing any time I broke away from his hold and ran, taking the bridegroom with me. When I reached the street I threw him on the ground and bolted away.

CHSE Odisha Class 11 English Writing Narration

Activity 1

Read the accounts in passages A and B again. Then narrate the incident from the point of view of :
(i) the bridegroom
(ii) the bride’s father
(iii) the bride
Answer:
(i) The bridegroom:
It was late in the evening when I reached the bride’s place which was richly decorated and illuminated. It was a treat to watch. The bride’s parents then came out to receive me and my friends. She was there too, with her face covered with a pink and gold veil. I wanted to take a good look at her as I sat on my horse. Fortunately, a breeze blew her veil away and I got a full glimpse of her face. she was young and beautiful! My heart beat fast in excitement. I couldn’t wait to get married.

Suddenly without warning my horse broke away from my grip and galloped away as if frightened. The sudden jerk loosened my turban and it fell off my head. Alas ! my white hairs were now visible! I could hear shouts of amazement from people gathered for the marriage. They were calling me an old man, fit to be a grandad. All my hopes of marriage were dashed. Suddenly, I was thrown off the horse and consciousness. When I regained it, I found myself in the hospital. I was told that the girl refused to marry me.

(ii) The bride’s father:
It was the happiest day of my life. My one and only daughter were getting married. I spent money lavishly on decorating my house. The bridegroom had not arrived till now. It was almost ten o’clock. Fortunately, however, they arrived half an hour later. I went out to receive him along with my wife and daughter. He sat astride on a horse. He had put on a coffee-colored sherwani suit. A gold brocaded yellow silk turban wrapped his head.

He looked handsome. I was proud of him – a man of many means. We now faced to face and I was asking him to get down from the horse so that the rituals to welcome him could be started, but he was inattentive. I followed his eyes. He was looking at my daughter. “Natural”, I thought. Suddenly, the horse raised its forelegs high up in the air, broke its master’s grip, and galloped away toward the street. I thought I could hold its reins but it was too fast for me.

My would-be son-in-law was now crying out loudly for help but in vain. Being afraid, I ran behind the horse. At that moment my would-be son-in-law’s turban fell off and I was aghast by what I saw. There was only a little white hair clinging to his bald head! O God, he could not.be less than seventy! “Marry my daughter”, would he ?” I said to myself. I then looked back to see my daughter rushing into the house with tears rolling down her cheeks.

(iii) The bride:
The moment of my marriage had arrived. My parents took me out with them to receive the bridegroom. As usual, this was an arranged marriage and I had not even had so much as a glimpse of my fiance before. So when we neared him sitting astride on a house, I tried to look at him through my veil but was not satisfied with the hazy figure that I perceived. Luckily, a breeze lifted off my veil and I had a fair look at him. He looked like a chivalrous knight sitting on a horse. He looked smart and handsome.

Suddenly, however, his horse neighed loudly, raised its forelegs high up into the air, and bolted away. This movement disrobed his head and his turban fell off. What I saw turned me speechless for a moment. He was completely bald, except for a few strands of impeccably white hair. I was shocked. I couldn’t believe my eyes. I had been deceived! Screaming, I ran into the house. “I couldn’t marry this old man, no not at all”. I thought to myself. Tears filled my eyes and I was disconsolate. It was indeed providential that the horse had bolted and the turban had fallen off.

CHSE Odisha Class 11 English Writing Narration

Activity 2

One day you saw a woman faint at a bus stop. Narrate what happened; describe the sequence of events and the reaction of the people at the bus stop.
Answer:
It was a blazing summer afternoon. I could feel the heat almost scalding my cheeks. I was perspiring like a faucet as I reached the bus stop from the college. It was mid-noon then. The streets were deserted and desolate. The tar on the road was melting. There was no one at the bus stop except for a lady in a synthetic saree. “How the hell can she put on a synthetic saree on this hot noon ?” I thought she was holding a bag of vegetables – “A housewife, returning home after marketing44, I surmised.

My lips were dry and so I crossed the road to have sugarcane juice. There were four to five people at the crushing trolley. As I ordered a glass of juice and started sipping it all the while facing the bus stop to see if the bus is arriving. Suddenly I saw the woman standing across the road, at the stop, fell down unconscious. For seconds I did not realize that she had fainted.

We all did but none moved to help – they were men and she was a woman. She was old enough to be my mother. I ran to her; saw that she was faint and her lips were trembling, her mouth was completely dry. I ran back, took an ice block from the juice seller and a glass of water, and rushed back. Meanwhile, all my fellow drinkers had gathered around her. They asked me to sprinkle water on her face which I did. But then I also poured water into her mouth and massaged her head with the ice block.

Within a few minutes, she regained consciousness and blushed with confusion as she saw the crowd around her. Holding her hand I lifted her up and handed her another glass of water. She drank that and her cheeks regained color. I helped her pick up the vegetables that had fallen all around her, hailed an auto at her request, and saw her off.

CHSE Odisha Class 11 English Writing Narration

Activity 3

Write short accounts of the following imaginary incidents :
(i) You saw a man trying to steal someone’s wallet (purse) and caught hold of him.
(ii) A road accident you witnessed.
Answer:
(i) It was at the Bhubaneswar railway station that this happened. I was standing in the queue, nonchalantly like the rest of the others, waiting for my turn at the booking counter. It was around 10 o’clock in the morning. The heat and sweat were making everyone restless. To add to this, persons in the queue were having unnecessary arguments with those trying to bypass the queue and go to the counter.

I was fidgeting with my watch, noting how much time each person’s booking was taking and calculating roughly how much time it would take for my turn to come. Just then a man, handsomely dressed arrived and went straight to the counter. He then asked something to the clerk and stood there. Watching his demeanor, I did not like to ask him to move from the I place and take his place in the queue. Instead, I was admiring his mustache jeans. It looked smart on him.

Suddenly I saw him reach for the wallet in the back pocket of the person, first in the queue. He picked it up and turned back. Spontaneously I shouted out, [ “you thief’ and embraced him in a hug. He threw it on the floor and feigned ignorance about it. However, everyone had seen him throw it and so he was caught red-handed. Meanwhile, hearing the commotion the railway police arrived and arrested him.

(ii) It was a Sunday morning, 7.00 a.m. I was off on my bicycle to IRC village to buy vegetables from the Gandhi Market. I was on the road that runs parallel to the National Highway in Jaydev Vihar. All of a sudden a mini truck sped past me, raising a lot of dust. It immediately turned left to go onto the highway taking the mud track road. Just before it reached the highway, there was a loud thud. The four wheels of the truck had fallen into the ditch that had been recently dug to make a drain along the highway.

The driver did not know this and had taken that track to reach the highway. He was unfortunate. The four wheels were deep in the ditch and the truck’s back had been thrown up into the air with the rear tires hanging and wheeling. I rushed to the spot. The driver had escaped unhurt but the cleaner was lying unconscious in the driver’s cabin. We quickly brought him out through the open door of the truck. Pieces of glass had pierced his cheeks and forehead. He was bleeding profusely. The driver hailed a taxi and took him immediately to the hospital.

CHSE Odisha Class 11 English Writing Narration

Activity 4

The Prime Minister is to visit Bhubaneswar next week and the following is the tour program. Write a short account of the planned tour, using the points below.
10.0 am : arrival by a special Air Force plane.
10.10 a.m.: reception by the Chief Minister at the airport.
10.30 a.m.: meeting at the State Secretariat; discussion with the Chief Minister
11.30 a.m.: meeting with party workers.
12.30 p.m.: lays the foundation of the Software Technology Park.
1.0 p.m. : meeting the press.
2.0 p.m. : lunch at Raj Bhavan.
3.0 p.m. : return to Delhi.
Answer:
The Prime Minister arrives at the Biju Pattanaik Airport at 10.00 a.m. sharp by the special Air Force plane. He is to be received there by the Chief Minister and other Cabinet Colleagues. After this, he heads straight for the Secretariat where he discusses relief measures granted by the World Bank and other funding agencies for the cyclone-affected area. After this, at 11.30 p.m.

he reaches the B.J.B. party office to meet party workers. There he discusses organizational elections. At 12.30 p.m. he reaches the site for the Software Technology Park and lays its foundation stone. Following this, he attends a press conference organized by the BBSR Press Club. At 2.00 p.m. he has lunch with the Governor at the Raj Bhavan. At 3.00 he once again boards the plane to leave for Delhi.