CBSE Class 12 Urdu Elective Question Paper 2019 with Answer Key (March 26)

CBSE Class 12 Urdu Elective 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 26, 2019 in the Morning Session 10:30 AM to 1:30 PM. The medium of paper was Urdu. The question paper comprised a total of 11 questions.

CBSE Class 12 Urdu Elective Question Paper 2019 with Answer Key (March 26)

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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.
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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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.
Under what condition can a bimolecular reaction become kinetically first order?

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5.
What are reducing sugars?

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6.
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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CBSE Class 12 Urdu Elective Question Paper 2019 with Answer Key (March 26)

CBSE Class 12 Urdu Elective Question Paper 2019 with Answer Key (March 26)

CBSE Class 12 Previous Year Question Papers

CBSE CLASS XII Questions

1.
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

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.
Under what condition can a bimolecular reaction become kinetically first order?

5.
What are reducing sugars?

6.
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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CBSE Class 12 Urdu Elective Question Paper 2019 with Answer Key (March 26)

CBSE Class 12 Previous Year Question Papers

CBSE CLASS XII Questions

1.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

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.Under what condition can a bimolecular reaction become kinetically first order?

5.What are reducing sugars?

6.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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1.
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

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.
Under what condition can a bimolecular reaction become kinetically first order?

5.
What are reducing sugars?

6.
Give structures of A, B and C: $CH_3Cl \xrightarrow{KCN}$ A $\xrightarrow{LiAlH_4}$ B $\xrightarrow{CHCl_3 + \text{alc. } KOH, \Delta}$ C