CBSE Class 12 Biology Question Paper 2023 with Answer Key (March 16, Set 2- 57/3/2)

CBSE Class 12 Biology Question Paper 2023 with Answer Key (Set 2- 57/3/2) is available for download. The exam was conducted by the Central Board of Secondary Education on March 16, 2023 in the Morning Session 10:30 AM to 1:30 PM. The medium of paper was English & Hindi. According to initial student reaction, the CBSE Class 12 Biology Paper was rated as Moderate in difficulty level. The question paper comprised a total of 33 questions divided among 5 sections.

CBSE Class 12 Biology (Set 2- 57/3/2) Question Paper 2023 with Answer Key (March 16)

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CBSE Class 12 Previous Year Question Papers

CBSE Class 12 Question Paper 2022	CBSE Class 12 Question Paper 2020	CBSE Class 12 Question Paper 2019
CBSE Class 12 Question Paper 2018	CBSE Class 12 Question Paper 2017	CBSE Class 12 Question Paper 2016

CBSE CLASS XII Questions

1.
Though chlorine shows strong $-I$ effect, why is it ortho/para directing?

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2.
What are reducing sugars?

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3.
Predict the alkene that would be formed by dehydrohalogenation of 1-Bromo-1-methylcyclohexane.

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4.
Explain: (i) Presence of carbonyl group in glucose. (ii) Presence of five $-$OH groups attached to different carbon atoms.

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5.
61 g benzoic acid (M = 122 g mol$^{-1}$) dissolved in 500 g benzene. Vapour pressure of pure benzene = 66 torr. Assume complete dimerisation. Calculate vapour pressure of solution.

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6.
Which isomer of $C_4H_9Br$ is most reactive towards $S_N1$ reaction?

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CBSE Class 12 Biology Question Paper 2023 with Answer Key (March 16, Set 2- 57/3/2)

CBSE Class 12 Biology (Set 2- 57/3/2) Question Paper 2023 with Answer Key (March 16)

CBSE Class 12 Previous Year Question Papers

CBSE CLASS XII Questions

1.
Though chlorine shows strong $-I$ effect, why is it ortho/para directing?

2.
What are reducing sugars?

3.
Predict the alkene that would be formed by dehydrohalogenation of 1-Bromo-1-methylcyclohexane.

4.
Explain: (i) Presence of carbonyl group in glucose. (ii) Presence of five $-$OH groups attached to different carbon atoms.

5.
61 g benzoic acid (M = 122 g mol$^{-1}$) dissolved in 500 g benzene. Vapour pressure of pure benzene = 66 torr. Assume complete dimerisation. Calculate vapour pressure of solution.

6.
Which isomer of $C_4H_9Br$ is most reactive towards $S_N1$ reaction?

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CBSE Class 12 Biology (Set 2- 57/3/2) Question Paper 2023 with Answer Key (March 16)

CBSE Class 12 Previous Year Question Papers

CBSE CLASS XII Questions

1.Though chlorine shows strong $-I$ effect, why is it ortho/para directing?

2.What are reducing sugars?

3.Predict the alkene that would be formed by dehydrohalogenation of 1-Bromo-1-methylcyclohexane.

4.Explain: (i) Presence of carbonyl group in glucose. (ii) Presence of five $-$OH groups attached to different carbon atoms.

5.61 g benzoic acid (M = 122 g mol$^{-1}$) dissolved in 500 g benzene. Vapour pressure of pure benzene = 66 torr. Assume complete dimerisation. Calculate vapour pressure of solution.

6.Which isomer of $C_4H_9Br$ is most reactive towards $S_N1$ reaction?

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1.
Though chlorine shows strong $-I$ effect, why is it ortho/para directing?

2.
What are reducing sugars?

3.
Predict the alkene that would be formed by dehydrohalogenation of 1-Bromo-1-methylcyclohexane.

4.
Explain: (i) Presence of carbonyl group in glucose. (ii) Presence of five $-$OH groups attached to different carbon atoms.

5.
61 g benzoic acid (M = 122 g mol$^{-1}$) dissolved in 500 g benzene. Vapour pressure of pure benzene = 66 torr. Assume complete dimerisation. Calculate vapour pressure of solution.

6.
Which isomer of $C_4H_9Br$ is most reactive towards $S_N1$ reaction?