QBManager

CHXII13:AMINES

324330 Assertion :
Reduction of m-dinitrobenzene with ammonium sulphide gives m-nitroaniline.
Reason :
m-Nitroaniline formed gets precipitatcd and hence, further reduction is prevented .

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

Explanation:

m-Nitroaniline's lower electron deficiency, influenced by opposing $+ R$ and $- R$ effects, hinders its further reduction compared to $m -$ dinitrobenzene. Therefore the option (3) is correct.

CHXII13:AMINES

324331 Assertion :
$p - O_{2} N - C_{6} H_{4} {COCH}_{3}$ is prepared by Friedel - Craft's acylation of nitrobenzene.
Reason :
Nitrobenzene easily undergoes electrophilic substituion reactions.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Both Assertion and Reason are incorrect.

Explanation:

$- {NO}_{2}$ group is a strong electron withdrawing group, hence deactivates the benzene ring by decreasing the electron density from it. Hence, nitrobenzene does not undergo Friedel - Craft's acylation and electrophilic substitution reactions.

AIIMS - 2005

CHXII13:AMINES

324332 Assertion :
Tautomerism is exhibited by a compound which is a mixture of two labile forms in dynamic equilibrium.
Reason :
Nitroalkanes do not show tautomerism.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

Explanation:

Nitroalkanes containing $α$ -hydrogens i.e., $1^{\circ}$ and $2^{\circ}$ (but not $3^{\circ}$ nitroalkanes), show tautomerism.
supporting img
Nitroalkanes with $α$ -hydrogens, especially primary $(1^{\circ})$ and secondary $(2^{\circ})$ nitroalkanes, exhibit tautomeric behavior by rapidly interconverting through proton shifts. So the option (3) is correct.

CHXII13:AMINES

324333 $C H_{3} N O_{2} \to_{HCl}^{SnC l_{2}} C H_{3} X,^{'} X' is$

1

- {NH}_{2}

2

- COOH

3

- CHO

4

{({CH}_{3} CO)}_{2} O

Explanation:

On hydrogenation of methyl nitrate in the presence of $S n C l_{2}$ and $H C l$ , methyl amine is formed.
$C H_{3} N O_{2} \to_{HCl}^{SnC l_{2}} C H_{3} N H_{2} + 2 H_{2} O$

CHXII13:AMINES

324330 Assertion :
Reduction of m-dinitrobenzene with ammonium sulphide gives m-nitroaniline.
Reason :
m-Nitroaniline formed gets precipitatcd and hence, further reduction is prevented .

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

Explanation:

m-Nitroaniline's lower electron deficiency, influenced by opposing $+ R$ and $- R$ effects, hinders its further reduction compared to $m -$ dinitrobenzene. Therefore the option (3) is correct.

CHXII13:AMINES

324331 Assertion :
$p - O_{2} N - C_{6} H_{4} {COCH}_{3}$ is prepared by Friedel - Craft's acylation of nitrobenzene.
Reason :
Nitrobenzene easily undergoes electrophilic substituion reactions.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Both Assertion and Reason are incorrect.

Explanation:

$- {NO}_{2}$ group is a strong electron withdrawing group, hence deactivates the benzene ring by decreasing the electron density from it. Hence, nitrobenzene does not undergo Friedel - Craft's acylation and electrophilic substitution reactions.

AIIMS - 2005

CHXII13:AMINES

324332 Assertion :
Tautomerism is exhibited by a compound which is a mixture of two labile forms in dynamic equilibrium.
Reason :
Nitroalkanes do not show tautomerism.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

Explanation:

Nitroalkanes containing $α$ -hydrogens i.e., $1^{\circ}$ and $2^{\circ}$ (but not $3^{\circ}$ nitroalkanes), show tautomerism.
supporting img
Nitroalkanes with $α$ -hydrogens, especially primary $(1^{\circ})$ and secondary $(2^{\circ})$ nitroalkanes, exhibit tautomeric behavior by rapidly interconverting through proton shifts. So the option (3) is correct.

CHXII13:AMINES

324333 $C H_{3} N O_{2} \to_{HCl}^{SnC l_{2}} C H_{3} X,^{'} X' is$

1

- {NH}_{2}

2

- COOH

3

- CHO

4

{({CH}_{3} CO)}_{2} O

Explanation:

On hydrogenation of methyl nitrate in the presence of $S n C l_{2}$ and $H C l$ , methyl amine is formed.
$C H_{3} N O_{2} \to_{HCl}^{SnC l_{2}} C H_{3} N H_{2} + 2 H_{2} O$

CHXII13:AMINES

324330 Assertion :
Reduction of m-dinitrobenzene with ammonium sulphide gives m-nitroaniline.
Reason :
m-Nitroaniline formed gets precipitatcd and hence, further reduction is prevented .

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

Explanation:

m-Nitroaniline's lower electron deficiency, influenced by opposing $+ R$ and $- R$ effects, hinders its further reduction compared to $m -$ dinitrobenzene. Therefore the option (3) is correct.

CHXII13:AMINES

324331 Assertion :
$p - O_{2} N - C_{6} H_{4} {COCH}_{3}$ is prepared by Friedel - Craft's acylation of nitrobenzene.
Reason :
Nitrobenzene easily undergoes electrophilic substituion reactions.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Both Assertion and Reason are incorrect.

Explanation:

$- {NO}_{2}$ group is a strong electron withdrawing group, hence deactivates the benzene ring by decreasing the electron density from it. Hence, nitrobenzene does not undergo Friedel - Craft's acylation and electrophilic substitution reactions.

AIIMS - 2005

CHXII13:AMINES

324332 Assertion :
Tautomerism is exhibited by a compound which is a mixture of two labile forms in dynamic equilibrium.
Reason :
Nitroalkanes do not show tautomerism.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

Explanation:

Nitroalkanes containing $α$ -hydrogens i.e., $1^{\circ}$ and $2^{\circ}$ (but not $3^{\circ}$ nitroalkanes), show tautomerism.
supporting img
Nitroalkanes with $α$ -hydrogens, especially primary $(1^{\circ})$ and secondary $(2^{\circ})$ nitroalkanes, exhibit tautomeric behavior by rapidly interconverting through proton shifts. So the option (3) is correct.

CHXII13:AMINES

324333 $C H_{3} N O_{2} \to_{HCl}^{SnC l_{2}} C H_{3} X,^{'} X' is$

1

- {NH}_{2}

2

- COOH

3

- CHO

4

{({CH}_{3} CO)}_{2} O

Explanation:

On hydrogenation of methyl nitrate in the presence of $S n C l_{2}$ and $H C l$ , methyl amine is formed.
$C H_{3} N O_{2} \to_{HCl}^{SnC l_{2}} C H_{3} N H_{2} + 2 H_{2} O$

CHXII13:AMINES

324330 Assertion :
Reduction of m-dinitrobenzene with ammonium sulphide gives m-nitroaniline.
Reason :
m-Nitroaniline formed gets precipitatcd and hence, further reduction is prevented .

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

Explanation:

m-Nitroaniline's lower electron deficiency, influenced by opposing $+ R$ and $- R$ effects, hinders its further reduction compared to $m -$ dinitrobenzene. Therefore the option (3) is correct.

CHXII13:AMINES

324331 Assertion :
$p - O_{2} N - C_{6} H_{4} {COCH}_{3}$ is prepared by Friedel - Craft's acylation of nitrobenzene.
Reason :
Nitrobenzene easily undergoes electrophilic substituion reactions.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Both Assertion and Reason are incorrect.

Explanation:

$- {NO}_{2}$ group is a strong electron withdrawing group, hence deactivates the benzene ring by decreasing the electron density from it. Hence, nitrobenzene does not undergo Friedel - Craft's acylation and electrophilic substitution reactions.

AIIMS - 2005

CHXII13:AMINES

324332 Assertion :
Tautomerism is exhibited by a compound which is a mixture of two labile forms in dynamic equilibrium.
Reason :
Nitroalkanes do not show tautomerism.

1 Both Assertion and Reason are correct and Reason is the correct explanation of the Assertion.

2 Both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion.

3 Assertion is correct but Reason is incorrect.

4 Assertion is incorrect but Reason is correct.

Explanation:

Nitroalkanes containing $α$ -hydrogens i.e., $1^{\circ}$ and $2^{\circ}$ (but not $3^{\circ}$ nitroalkanes), show tautomerism.
supporting img
Nitroalkanes with $α$ -hydrogens, especially primary $(1^{\circ})$ and secondary $(2^{\circ})$ nitroalkanes, exhibit tautomeric behavior by rapidly interconverting through proton shifts. So the option (3) is correct.

CHXII13:AMINES

324333 $C H_{3} N O_{2} \to_{HCl}^{SnC l_{2}} C H_{3} X,^{'} X' is$

1

- {NH}_{2}

2

- COOH

3

- CHO

4

{({CH}_{3} CO)}_{2} O

Explanation:

On hydrogenation of methyl nitrate in the presence of $S n C l_{2}$ and $H C l$ , methyl amine is formed.
$C H_{3} N O_{2} \to_{HCl}^{SnC l_{2}} C H_{3} N H_{2} + 2 H_{2} O$

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Question Bank Series

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation:

Explanation: