# NEET > Organic Compounds Containing Nitrogen

Explore popular questions from Organic Compounds Containing Nitrogen for NEET. This collection covers Organic Compounds Containing Nitrogen previous year NEET questions hand picked by popular teachers.

Physics
Chemistry
Biology

Q 1.

Correct4

Incorrect-1

The correct increasing order of basic strength for the following compounds is

A

III < I < II

B

III < II < I

II < I < III

D

II < III < I

##### Explanation

Q 2.

Correct4

Incorrect-1

Which of the following reactions is appropriate for converting acetamide to methanamine?

Hoffmann hypobromamide reaction

B

Stephen's reaction

C

Gabriel phthalimide synthesis

D

Carbylamine reaction

##### Explanation

Q 3.

Correct4

Incorrect-1

Which one of the following nitro-compounds does not react with nitrous acid?

A

B

D

##### Explanation

Q 4.

Correct4

Incorrect-1

A given nitrogen-containing aromatic compound 'A' reacts with {tex} \mathrm { Sn } / \mathrm { HCl } , {/tex} followed by {tex}HNO_{2}{/tex} to give an unstable compound 'B'. 'B', on treatment with phenol, forms a beautiful coloured compound 'C' with the molecular formula {tex}C_{12}H_{10}N_{2}O{/tex}. The structure of compound 'A' is

A

C

D

##### Explanation

Q 5.

Correct4

Incorrect-1

The correct statement regarding the basicity of arylamines is

A

arylamines are generally more basic than alkylamines because of aryl group

B

arylamines are generally more basic than alkylamines, because the nitrogen atom in arylamines is s p-hybridised

arylamines are generally less basic than alkylamines because the nitrogen lone-pair electrons are delocalised by interaction with aromatic ring {tex}\pi{/tex}-electron system

D

arylamines are generally more basic than alkylamines because the nitrogen lone-pair electrons are not delocalised by interaction with the aromatic ring {tex} \pi {/tex}-electron system.

##### Explanation

Q 6.

Correct4

Incorrect-1

The product formed by the reaction of an aldehyde with a primary amine is

A

carboxylic acid

B

aromatic acid

Schiff's base

D

ketone.

##### Explanation

Q 7.

Correct4

Incorrect-1

The following reaction

is known by the name

A

Perkin's reaction

B

Acetylation reaction

Schotten-Baumann reaction

D

Friedel-Craft's reaction.

##### Explanation

Q 8.

Correct4

Incorrect-1

Method by which aniline cannot be prepared is

A

degradation of benzamide with bromine in alkaline solution

B

reduction of nitrobenzene with {tex} \mathrm { H } _ { 2 } / \mathrm { Pd } {/tex} in ethanol

potassium salt of phthalimide treated with chlorobenzene followed by hydrolysis with aqueous NaOH solution

D

hydrolysis of phenylisocyanide with acidic solution.

##### Explanation

Q 9.

Correct4

Incorrect-1

The number of structural isomers possible from the molecular formula {tex} \mathrm { C } _ { 3 } \mathrm { H } _ { 9 } \mathrm { N } {/tex} is
is known by the name

A

5

B

2

C

3

4

##### Explanation

Q 10.

Correct4

Incorrect-1

The electrolytic reduction of nitrobenzene in strongly acidic medium produces

A

azobenzene

B

aniline

p-aminophenol

D

azoxybenzene.

##### Explanation

Q 11.

Correct4

Incorrect-1

In the following reaction, the product (A) i

A

B

C

##### Explanation

Q 12.

Correct4

Incorrect-1

Which of the following will be most stable diazonium salt {tex} R N _ { 2 } ^ { + } X ? {/tex}

A

{tex} \mathrm { CH } _ { 3 } \mathrm { N } _ { 2 } ^ { + } X^{-} {/tex}

{tex} \mathrm { C } _ { 6 } \mathrm { H } _ { 5 } \mathrm { N } _ { 2 } ^ { + } X^{-} {/tex}

C

{tex} \mathrm { CH } _ { 3 } \mathrm { CH } _ { 2 } \mathrm { N } _ { 2 } ^ { + } X^{-} {/tex}

D

{tex} \mathrm { C } _ { 6 } \mathrm { H } _ { 5 } \mathrm { CH } _ { 2 } \mathrm { N } _ { 2 } ^ { + } X^{-} {/tex}

##### Explanation

Q 13.

Correct4

Incorrect-1

Nitrobenzene on reaction with conc. {tex} \mathrm { HNO } _ { 3 } / \mathrm { H } _ { 2 } \mathrm { SO } _ { 4 } {/tex} at {tex} 80 - 100 ^ { \circ } \mathrm { C } {/tex} forms which one of the following products?

A

1,4-Dinitrobenzene

B

{tex} 1,2,4 - {/tex} Trinitrobenzene

C

1,2-Dinitrobenzene

{tex} 1,3 {/tex} -Dinitrobenzene

##### Explanation

Q 14.

Correct4

Incorrect-1

{tex} \mathrm { H } _ { 3 } \mathrm { PO } _ { 2 } {/tex} and {tex} \mathrm { H } _ { 2 } \mathrm { O } {/tex}

B

{tex} \mathrm { H } ^ { + } / \mathrm { H } _ { 2 } \mathrm { O } {/tex}

C

{tex} \mathrm { HgSO } _ { 4 } / \mathrm { H } _ { 2 } \mathrm { SO } _ { 4 } {/tex}

D

{tex} \mathrm { Cu } _ { 2 } \mathrm { Cl } _ { 2 } {/tex}

##### Explanation

Q 15.

Correct4

Incorrect-1

On hydrolysis of a "compound", two compounds are obtained. One of which on treatment with sodium nitrite and hydrochloric acid gives a product which does not respond to iodoform test. The second one reduces Tollens reagent and Fehling's solution. The "compound" is

{tex} \mathrm { CH } _ { 3 } \mathrm { CH } _ { 2 } \mathrm { CH } _ { 2 } \mathrm { NC } {/tex}

B

{tex} \mathrm { CH } _ { 3 } \mathrm { CH } _ { 2 } \mathrm { CH } _ { 2 } \mathrm { CN } {/tex}

C

{tex} \mathrm { CH } _ { 3 } \mathrm { CH } _ { 2 } \mathrm { CH } _ { 2 } \mathrm { ON } = \mathrm { O } {/tex}

D

{tex} \mathrm { CH } _ { 3 } \mathrm { CH } _ { 2 } \mathrm { CH } _ { 2 } \mathrm { CON } \left( \mathrm { CH } _ { 3 } \right) _ { 2 } {/tex}

##### Explanation

Q 16.

Correct4

Incorrect-1

Some reactions of amines are given. Which one is not correct?

B

{tex} \mathrm { CH } _ { 3 } \mathrm { CH } _ { 2 } \mathrm { NH } _ { 2 } + \mathrm { HNO } _ { 2 } \rightarrow \mathrm { CH } _ { 3 } \mathrm { CH } _ { 2 } \mathrm { OH } + \mathrm { N } _ { 2 } {/tex}

C

{tex} \mathrm { CH } _ { 3 } \mathrm { NH } _ { 2 } + \mathrm { C } _ { 6 } \mathrm { H } _ { 5 } \mathrm { O } _ { 2 } \mathrm { Cl } \rightarrow \mathrm { CH } _ { 3 } \mathrm { NHSO } _ { 2 } \mathrm { C } _ { 6 } \mathrm { H } _ { 5 } {/tex}

D

{tex} \begin{aligned} \left( \mathrm { CH } _ { 3 } \right) _ { 2 } \mathrm { NH } + \mathrm { NaNO } _ { 2 } & + \mathrm { HCl } \\ & \rightarrow \left( \mathrm { CH } _ { 3 } \right) _ { 2 } \mathrm { N } - \mathrm { N } = \mathrm { O } \end{aligned} {/tex}

##### Explanation

Q 17.

Correct4

Incorrect-1

An organic compound {tex} \left( \mathrm { C } _ { 3 } \mathrm { H } _ { 9 } \mathrm { N } \right) ( A ) , {/tex} when treated with nitrous acid, gave an alcohol and {tex} \mathrm { N } _ { 2 } {/tex} gas was evolved. {tex} ( A ) {/tex} on warming with {tex} \mathrm { CHCl } _ { 3 } {/tex} and caustic potash gave {tex} ( C ) {/tex} which on reduction gave isopropylmethylamine. Predict the structure of {tex} ( A ) . {/tex}

B

{tex} \mathrm { CH } _ { 3 } \mathrm { CH } _ { 2 } - \mathrm { NH } - \mathrm { CH } _ { 2 } {/tex}

C

D

{tex} \mathrm { CH } _ { 3 } \mathrm { CH } _ { 2 } \mathrm { CH } _ { 2 } - \mathrm { NH } _ { 2 } {/tex}

Q 18.

Correct4

Incorrect-1

B

C

D

##### Explanation

Q 19.

Correct4

Incorrect-1

Which of the following compounds is most basic?

A

C

D

##### Explanation

Q 20.

Correct4

Incorrect-1

Aninline in a set of the following reactions yielded a coloured product Y.

The structue of 'Y' would be

B

C

D

##### Explanation

Q 21.

Correct4

Incorrect-1

Which of the following statements about primary amines is false?

A

Alkyl amines are stronger bases than aryl amines.

B

Alkyl amines react with nitrous acid to produce alcohols.

Aryl amines react with nitrous acid to produce phenols.

D

Alkyl amines are stronger bases than ammonia.

##### Explanation

Q 22.

Correct4

Incorrect-1

Predict the product.

A

B

C

##### Explanation

Q 23.

Correct4

Incorrect-1

Nitrobenzene can be prepared from benzene by using a mixture of conc. {tex}HNO_{3}{/tex} and conc. {tex} \mathrm { H } _ { 2 } \mathrm { SO } _ { 4 } {/tex} . In the mixture, nitric acid acts as a/an

A

acid

base

C

catalyst

D

reducing agent.

##### Explanation

Q 24.

Correct4

Incorrect-1

In a reaction of aniline a coloured product C was obtained.

The structure of C would be

A

C

D

##### Explanation

Q 25.

Correct4

Incorrect-1

Which one of the following on reduction with lithium aluminium hydride yields a secondary amine?

Methyl isocyanide

B

Acetamide

C

Methyl cyanide

D

Nitroethane