CBSE Class 12 Sociology (Punjabi) Question Paper 2019 with Answer Key (March 11)

CBSE Class 12 Sociology (Punjabi) Question Paper 2019 with Answer Key Set 4 is available for download. The exam was conducted by the Central Board of Secondary Education on March 11, 2019 in the Morning Session 10:30 AM to 1:30 PM. The medium of paper was Punjabi. In terms of difficulty level, CBSE Class 12 Sociology (Punjabi) paper was of Moderate level. The question paper comprised a total of 25 questions.

CBSE Class 12 Sociology (Punjabi) Question Paper 2019 with Answer Key (March 11)

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CBSE Class 12 Previous Year Question Papers

CBSE Question Paper 2020	CBSE Question Paper 2019	CBSE Question Paper 2018
CBSE Question Paper 2017	CBSE Question Paper 2016	CBSE Question Paper 2015

CBSE CLASS XII Questions

1.
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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2.
Explain: (i) Presence of carbonyl group in glucose. (ii) Presence of five $-$OH groups attached to different carbon atoms.

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3.
Why is o-nitrophenol more acidic than o-methoxyphenol?

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4.
Though chlorine shows strong $-I$ effect, why is it ortho/para directing?

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5.
For decomposition of $H_2O_2$ by $I^-$: Step I: $H_2O_2 + I^- \rightarrow H_2O + IO^-$ (slow). Step II: $H_2O_2 + IO^- \rightarrow H_2O + I^- + O_2$ (fast). (a) Write rate law. (b) Determine order w.r.t. $H_2O_2$ and $I^-$ and overall order. (c) Molecularity of Step II.

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6.
Predict the alkene that would be formed by dehydrohalogenation of 1-Bromo-1-methylcyclohexane.

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CBSE Class 12 Sociology (Punjabi) Question Paper 2019 with Answer Key (March 11)

CBSE Class 12 Sociology (Punjabi) Question Paper 2019 with Answer Key (March 11)

CBSE Class 12 Previous Year Question Papers

CBSE CLASS XII Questions

1.
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.

2.
Explain: (i) Presence of carbonyl group in glucose. (ii) Presence of five $-$OH groups attached to different carbon atoms.

3.
Why is o-nitrophenol more acidic than o-methoxyphenol?

4.
Though chlorine shows strong $-I$ effect, why is it ortho/para directing?

5.
For decomposition of $H_2O_2$ by $I^-$: Step I: $H_2O_2 + I^- \rightarrow H_2O + IO^-$ (slow). Step II: $H_2O_2 + IO^- \rightarrow H_2O + I^- + O_2$ (fast). (a) Write rate law. (b) Determine order w.r.t. $H_2O_2$ and $I^-$ and overall order. (c) Molecularity of Step II.

6.
Predict the alkene that would be formed by dehydrohalogenation of 1-Bromo-1-methylcyclohexane.

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CBSE Class 12 Sociology (Punjabi) Question Paper 2019 with Answer Key (March 11)

CBSE Class 12 Previous Year Question Papers

CBSE CLASS XII Questions

1.61 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.

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

3.Why is o-nitrophenol more acidic than o-methoxyphenol?

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

5.For decomposition of $H_2O_2$ by $I^-$: Step I: $H_2O_2 + I^- \rightarrow H_2O + IO^-$ (slow). Step II: $H_2O_2 + IO^- \rightarrow H_2O + I^- + O_2$ (fast). (a) Write rate law. (b) Determine order w.r.t. $H_2O_2$ and $I^-$ and overall order. (c) Molecularity of Step II.

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

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1.
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.

2.
Explain: (i) Presence of carbonyl group in glucose. (ii) Presence of five $-$OH groups attached to different carbon atoms.

3.
Why is o-nitrophenol more acidic than o-methoxyphenol?

4.
Though chlorine shows strong $-I$ effect, why is it ortho/para directing?

5.
For decomposition of $H_2O_2$ by $I^-$: Step I: $H_2O_2 + I^- \rightarrow H_2O + IO^-$ (slow). Step II: $H_2O_2 + IO^- \rightarrow H_2O + I^- + O_2$ (fast). (a) Write rate law. (b) Determine order w.r.t. $H_2O_2$ and $I^-$ and overall order. (c) Molecularity of Step II.

6.
Predict the alkene that would be formed by dehydrohalogenation of 1-Bromo-1-methylcyclohexane.