CBSE Class 12 Economics Question Paper 2020 with Answer Key (March 13, Set 2- 58/4/2)

CBSE Class 12 Economics Question Paper 2020 with Answer Key Set 2- 58/4/2 is available for download. The exam was conducted by the Central Board of Secondary Education on March 13, 2020 in the Morning Session 10:30 AM to 1:30 PM. The medium of paper was English & Hindi. In terms of difficulty level, CBSE Class 12 Economics paper was of Moderate level. The question paper comprised a total of 34 questions divided among 2 sections.

CBSE Class 12 Economics Set 2- 58/4/2 Question Paper 2020 with Answer Key (March 13)

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CBSE CLASS XII Questions

1.
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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2.
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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3.
Draw the structures of major products: (a) Chlorobenzene + $CH_3Cl$ / Na, dry ether
(b) p-Hydroxyphenethyl alcohol + HBr

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4.
Why is o-nitrophenol more acidic than o-methoxyphenol?

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5.
Predict the alkene formed by dehydrohalogenation of 1-Bromo-1-methylcyclohexane.

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6.
What are reducing sugars?

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CBSE Class 12 Economics Question Paper 2020 with Answer Key (March 13, Set 2- 58/4/2)

CBSE Class 12 Economics Set 2- 58/4/2 Question Paper 2020 with Answer Key (March 13)

CBSE Class 12 Previous Year Question Papers

CBSE CLASS XII Questions

1.
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.

2.
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.

3.
Draw the structures of major products: (a) Chlorobenzene + $CH_3Cl$ / Na, dry ether
(b) p-Hydroxyphenethyl alcohol + HBr

4.
Why is o-nitrophenol more acidic than o-methoxyphenol?

5.
Predict the alkene formed by dehydrohalogenation of 1-Bromo-1-methylcyclohexane.

6.
What are reducing sugars?

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CBSE Class 12 Economics Set 2- 58/4/2 Question Paper 2020 with Answer Key (March 13)

CBSE Class 12 Previous Year Question Papers

CBSE CLASS XII Questions

1.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.

2.61 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.

3.Draw the structures of major products: (a) Chlorobenzene + $CH_3Cl$ / Na, dry ether (b) p-Hydroxyphenethyl alcohol + HBr

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

5.Predict the alkene formed by dehydrohalogenation of 1-Bromo-1-methylcyclohexane.

6.What are reducing sugars?

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1.
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.

2.
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.

3.
Draw the structures of major products: (a) Chlorobenzene + $CH_3Cl$ / Na, dry ether
(b) p-Hydroxyphenethyl alcohol + HBr

4.
Why is o-nitrophenol more acidic than o-methoxyphenol?

5.
Predict the alkene formed by dehydrohalogenation of 1-Bromo-1-methylcyclohexane.

6.
What are reducing sugars?