JEE Main > Organic Compounds Containing Nitrogen

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


Q 1.    

Correct4

Incorrect-1

When primary amine reacts with chloroform in ethanolic KOH then the product is

an isocyanide

B

an aldehyde

C

a cyanide

D

an alcohol.

Explanation

Q 2.    

Correct4

Incorrect-1

The reaction of chloroform with alcoholic KOH and p-toluidine forms

A

B

D

Explanation

Q 3.    

Correct4

Incorrect-1

The correct order of increasing basic nature for the bases {tex} \mathrm { NH } _ { 3 } , \mathrm { CH } _ { 3 } \mathrm { NH } _ { 2 } {/tex} and {tex} \left( \mathrm { CH } _ { 3 } \right) _ { 2 } \mathrm { NH } {/tex} is

A

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

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

C

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

D

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

Explanation




Q 4.    

Correct4

Incorrect-1

Ethyl isocyanide on hydrolysis in acidic medium generates

A

propanoic acid and ammonium salt

B

ethanoic acid and ammonium salt

C

methylamine salt and ethanoic acid

ethylamine salt and methanoic acid

Explanation


Q 5.    

Correct4

Incorrect-1

Which one of the following methods is neither meant for the synthesis nor for separation of amines?

A

Curtius reaction

Wurtz reaction

C

Hofmann method

D

Hinsberg method

Explanation


Q 6.    

Correct4

Incorrect-1

Amongst the following the most basic compound is

A

p-nitroaniline

B

acetanilide

C

aniline

benzylamine

Explanation


Q 7.    

Correct4

Incorrect-1

An organic compound having molecular mass 60 is found to contain {tex} \mathrm { C } = 20 \% , \mathrm { H } = 6.67 \% {/tex} and {tex} \mathrm { N } = 46.67 \% {/tex} while rest is
oxygen. On heating it gives {tex} \mathrm { NH } _ { 3 } {/tex} along with a solid residue. The solid residue give violet colour with alkaline copper sulphate solution. The compound is

A

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

{tex} \left( \mathrm { NH } _ { 2 } \right) _ { 2 } \mathrm { CO } {/tex}

C

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

D

{tex} \mathrm { CH } _ { 3 } \mathrm { NCO } {/tex}

Explanation





Q 8.    

Correct4

Incorrect-1

Which one of the following is the strongest base in aqueous solution?

A

Methylamine

B

Trimethylamine

C

Aniline

Dimethylamine.

Explanation



Q 9.    

Correct4

Incorrect-1

In the chemical reaction,
{tex} \mathrm { CH } _ { 3 } \mathrm { CH } _ { 2 } \mathrm { NH } _ { 2 } + \mathrm { CHCl } _ { 3 } + 3 \mathrm { KOH } \rightarrow ( \mathrm { A } ) + (\mathrm{B})+3 \mathrm { H } _ { 2 } \mathrm { O } , {/tex}the
compounds {tex} ( \mathrm { A } ) {/tex} and {tex} ( \mathrm { B } ) {/tex} are respectively

{tex} \mathrm { C } _ { 2 } \mathrm { H } _ { 5 } \mathrm { NC } {/tex} and {tex} 3\mathrm { KCl } {/tex}

B

{tex} \mathrm { C } _ { 2 } \mathrm { H } _ { 5 } \mathrm { CN } {/tex} and {tex} 3\mathrm { KCl } {/tex}

C

{tex} \mathrm { CH } _ { 3 } \mathrm { CH } _ { 2 } \mathrm { CONH } _ { 2 } {/tex} and {tex}3 \mathrm { KCl } {/tex}

D

{tex} \mathrm { C } _ { 2 } \mathrm { H } _ { 5 } \mathrm { NC } {/tex} and {tex} \mathrm { K } _ { 2 } \mathrm { CO } _ { 3 } {/tex}

Explanation

Q 10.    

Correct4

Incorrect-1

In the chemical reactions,

the compounds {tex} 'A' {/tex} and {tex}' B ' {/tex} respectively are

A

nitrobenzene and fluorobenzene

B

phenol and benzene

benzene diazonium chloride and fluorobenzene

D

nitrobenzene and chlorobenzene

Explanation







Q 11.    

Correct4

Incorrect-1

A compound with molecular mass 180 is acylated with {tex} \mathrm { CH } _ { 3 } \mathrm { COCl } {/tex} to get a compound with molecular mass {tex} 390 . {/tex} The number of amino groups present per molecule of the former compound is:

A

2

5

C

4

D

6

Explanation





Q 12.    

Correct4

Incorrect-1

An organic compound A upon reacting with {tex} \mathrm { NH } _ { 3 } {/tex} gives B. On heating B gives C. C in presence of {tex} \mathrm { KOH} {/tex} reacts with {tex}\mathrm { Br_2}{/tex} to given {tex} \mathrm { CH } _ { 3 } \mathrm { CH } _ { 2 } \mathrm { NH } _ { 2 } {/tex} . A is:

A

{tex} \mathrm { CH } _ { 3 } \mathrm { COOH } {/tex}

B

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

C

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

Explanation




Q 13.    

Correct4

Incorrect-1

The gas leaked from a storage tank of the Union Carbide plant in Bhopal gas tragedy was:

Methyl isocyanate

B

Methylamine

C

Ammonia

D

Phosgene

Explanation

Q 14.    

Correct4

Incorrect-1

On heating an aliphatic primary amine with chloroform and ethanolic potassium hydroxide, the organic compound formed is:

A

an alkanol

B

an alkanediol

C

an alkyl cyanide

an alkyl isocyanide

Explanation

Q 15.    

Correct4

Incorrect-1

Considering the basic strength of amines in aqueous solution, which one has the smallest {tex} p K _ { b } {/tex} value?

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

B

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

C

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

D

{tex} \mathrm { C } _ { 6 } \mathrm { H } _ { 5 } \mathrm { NH } _ { 2 } {/tex}

Explanation



Q 16.    

Correct4

Incorrect-1

In the reaction

the product {tex} E {/tex} is :

B

C

D

Explanation

Q 17.    

Correct4

Incorrect-1

In the Hofmann bromamide degradation reaction, the number of moles of {tex} \mathrm { NaOH } {/tex} and {tex} \mathrm { Br } _ { 2 } {/tex} used per mole of amine produced are:

A

Two moles of {tex} \mathrm { NaOH } {/tex} and two moles of {tex}\mathrm { Br_2} {/tex}

Four moles of {tex} \mathrm { NaOH } {/tex} and one mole of {tex} \mathrm { Br } _ { 2 } {/tex}

C

One mole of {tex} \mathrm { NaOH } {/tex} and one mole of {tex} \mathrm { Br } _ { 2 } {/tex}

D

Four moles of {tex} \mathrm { NaOH } {/tex} and two moles of {tex} \mathrm { Br_2} {/tex}

Explanation


Q 18.    

Correct4

Incorrect-1

When primary amine reacts with chloroform in ethanolic {tex}\mathrm{KOH}{/tex} then the product is

an isocyanide

B

an aldehyde

C

a cyanide

D

an alcohol.

Explanation


Q 19.    

Correct4

Incorrect-1

The correct order of increasing basic nature for the bases {tex} \mathrm { NH } _ { 3 } , \mathrm { CH } _ { 3 } \mathrm { NH } _ { 2 } {/tex} and {tex} \left( \mathrm { CH } _ { 3 } \right) _ { 2 } \mathrm { NH } {/tex} is

A

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

B

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

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

D

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

Explanation


Q 20.    

Correct4

Incorrect-1

Ethyl isocyanide on hydrolysis in acidic medium generates

ethylamine salt and methanoic acid

B

propanoic acid and ammonium salt

C

ethanoic acid and ammonium salt

D

methylamine salt and ethanoic acid.

Explanation


Q 21.    

Correct4

Incorrect-1

The reaction of chloroform with alcoholic {tex}\mathrm {KOH}{/tex} and {tex} p {/tex} -toluidine forms

A

B

C

Explanation


Q 22.    

Correct4

Incorrect-1

Which one of the following does not have {tex} s p ^ { 2 } {/tex} hybridized carbon?

A

Acetone

B

Acetic acid

Acetonitrile

D

Acetamide.

Explanation

Q 23.    

Correct4

Incorrect-1

Which of the following is the strongest base?

A

B

C

Explanation


Q 24.    

Correct4

Incorrect-1

Which one of the following methods is neither meant for the synthesis nor for separation of amines?

A

Hinsberg method

B

Hofmann method

Wurtz reaction

D

Curtius reaction

Explanation


Q 25.    

Correct4

Incorrect-1

Amongst the following the most basic compound is

benzylamine

B

aniline

C

acetanilide

D

{tex} p {/tex} -nitroaniline

Explanation