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

CBSE Class 12 Tibetan 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 Tibetan. The question paper comprised a total of questions.

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

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CBSE CLASS XII Questions

1.
Give structures of A, B and C: $CH_3Cl \xrightarrow{KCN}$ A $\xrightarrow{LiAlH_4}$ B $\xrightarrow{CHCl_3 + \text{alc. } KOH, \Delta}$ C

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2.
Which isomer of $C_4H_9Br$ is most reactive towards $S_N1$ reaction?

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3.
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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4.
Why is o-nitrophenol more acidic than o-methoxyphenol?

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5.
Give structures of A, B and C: Aniline $\xrightarrow{Br_2/H_2O}$ A $\xrightarrow{NaNO_2+HCl, 0-5^\circ C}$ B $\xrightarrow{H_3PO_2+H_2O}$ C

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6.
Write mechanism of acid dehydration of ethanol to ethene.

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

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

CBSE Class 12 Previous Year Question Papers

CBSE CLASS XII Questions

1.
Give structures of A, B and C: $CH_3Cl \xrightarrow{KCN}$ A $\xrightarrow{LiAlH_4}$ B $\xrightarrow{CHCl_3 + \text{alc. } KOH, \Delta}$ C

2.
Which isomer of $C_4H_9Br$ is most reactive towards $S_N1$ reaction?

3.
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.

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

5.
Give structures of A, B and C: Aniline $\xrightarrow{Br_2/H_2O}$ A $\xrightarrow{NaNO_2+HCl, 0-5^\circ C}$ B $\xrightarrow{H_3PO_2+H_2O}$ C

6.
Write mechanism of acid dehydration of ethanol to ethene.

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

CBSE Class 12 Previous Year Question Papers

CBSE CLASS XII Questions

1.Give structures of A, B and C: $CH_3Cl \xrightarrow{KCN}$ A $\xrightarrow{LiAlH_4}$ B $\xrightarrow{CHCl_3 + \text{alc. } KOH, \Delta}$ C

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

3.61 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.

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

5.Give structures of A, B and C: Aniline $\xrightarrow{Br_2/H_2O}$ A $\xrightarrow{NaNO_2+HCl, 0-5^\circ C}$ B $\xrightarrow{H_3PO_2+H_2O}$ C

6.Write mechanism of acid dehydration of ethanol to ethene.

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1.
Give structures of A, B and C: $CH_3Cl \xrightarrow{KCN}$ A $\xrightarrow{LiAlH_4}$ B $\xrightarrow{CHCl_3 + \text{alc. } KOH, \Delta}$ C

2.
Which isomer of $C_4H_9Br$ is most reactive towards $S_N1$ reaction?

3.
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.

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

5.
Give structures of A, B and C: Aniline $\xrightarrow{Br_2/H_2O}$ A $\xrightarrow{NaNO_2+HCl, 0-5^\circ C}$ B $\xrightarrow{H_3PO_2+H_2O}$ C

6.
Write mechanism of acid dehydration of ethanol to ethene.