CBSE Class 12 Japanese Question Paper 2016 with Answer Key (March 12)

CBSE Class 12 Japanese Question Paper 2016 with Answer Key Set 4 is available for download. The exam was conducted by the Central Board of Secondary Education on March 12, 2016 in the Morning Session 10:30 AM to 1:30 PM. The medium of paper was Japanese. The question paper comprised a total of questions.

CBSE Class 12 Japanese Question Paper 2016 with Answer Key (March 12)

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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.
Write mechanism of acid dehydration of ethanol to ethene.

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3.
Which isomer of $C_4H_9Br$ is most reactive towards $S_N1$ reaction?

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4.
Predict the alkene that would be formed by dehydrohalogenation of 1-Bromo-1-methylcyclohexane.

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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.
Why are magnesium blocks attached to iron water pipelines?

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CBSE Class 12 Japanese Question Paper 2016 with Answer Key (March 12)

CBSE Class 12 Japanese Question Paper 2016 with Answer Key (March 12)

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.
Write mechanism of acid dehydration of ethanol to ethene.

3.
Which isomer of $C_4H_9Br$ is most reactive towards $S_N1$ reaction?

4.
Predict the alkene that would be formed by dehydrohalogenation of 1-Bromo-1-methylcyclohexane.

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.
Why are magnesium blocks attached to iron water pipelines?

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CBSE Class 12 Japanese Question Paper 2016 with Answer Key (March 12)

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.Write mechanism of acid dehydration of ethanol to ethene.

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

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

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.Why are magnesium blocks attached to iron water pipelines?

Comments

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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.
Write mechanism of acid dehydration of ethanol to ethene.

3.
Which isomer of $C_4H_9Br$ is most reactive towards $S_N1$ reaction?

4.
Predict the alkene that would be formed by dehydrohalogenation of 1-Bromo-1-methylcyclohexane.

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.
Why are magnesium blocks attached to iron water pipelines?