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

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Organic Compounds Containing Nitrogen

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Q 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

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Q 2. The number of structural isomers possible from the molecular formula {tex} \mathrm { C } _ { 3 } \mathrm { H } _ { 9 } \mathrm { N } {/tex} is

A

5

B

2

C

3

4

Explanation


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Q 3. 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

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Q 4. In the reaction A is

{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

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Q 5. The reduction of nitro compounds is most preferred in the presence of

A

{tex} \mathrm { Pd } / \mathrm { H } _ { 2 } {/tex} in ethanol

B

{tex} \mathrm { Sn } + \mathrm { HCl } {/tex}

C

finely divided {tex}\mathrm {Ni}{/tex}

iron scrap and {tex}\mathrm{HCl}{/tex}.

Explanation

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Q 6. Ortho-Nitrophenol is less soluble in water than {tex} p - {/tex} and {tex} m - {/tex} Nitrophenols because:

A

{tex}o{/tex}-Nitrophenol is more volatile than those of {tex} m {/tex}- and {tex} p {/tex}-isomers.

{tex}o{/tex}-Nitrophenol shows intramolecular {tex}H{/tex}-bonding

C

{tex}o{/tex}-Nitrophenol shows intermolecular {tex}H{/tex}-bonding

D

Melting point of {tex} o {/tex}-Nitrophenol is lower than those of {tex} m {/tex}-and {tex} p {/tex}-isomers.

Explanation

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Q 7. Which of the following reactions will not give a primary amine?

A

{tex} \mathrm { CH } _ { 3 } \mathrm { CONH } _ { 2 } \xrightarrow { \mathrm { Br } _ { 2 } / \mathrm { KOH } } {/tex}

B

{tex} \mathrm { CH } _ { 3 } \mathrm { CN } \xrightarrow { \mathrm { LiAlH } _ { 4 } } { } {/tex}

{tex} \mathrm { CH } _ { 3 } \mathrm { NC } \xrightarrow{\mathrm { LiAlH } _ { 4 } }{/tex}

D

{tex} \mathrm { CH } _ { 3 } \mathrm { CONH } _ { 2 } \xrightarrow { \mathrm { LiAlH } _ { 4 } } {/tex}

Explanation

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Q 8. 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

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Q 9. Amongst the following the most basic compound is

A

{tex}p{/tex}-nitroaniline

B

acetanilide

C

aniline

benzylamine

Explanation

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Q 10. Which of the following is not correct?

A

Ethyl amine and aniline both have {tex} - \mathrm { NH } _ { 2 } {/tex} group

B

Ethyl amine and aniline dissolve in {tex}\mathrm{HCl}{/tex}

C

Ethyl amine and aniline both react with {tex} \mathrm { CHCl } _ { 3 } {/tex} and {tex} \mathrm {KOH} {/tex} to form unpleasant smelling compound

Ethyl amine and aniline both react with {tex}\mathrm {HNO _ { 2 } }{/tex} in cold to give hydroxy compounds

Explanation

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Q 11. Arrange the following amines in the order of increasing basicity.

A

B

D

Explanation

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Q 12. When bromination of aniline is carried out by protecting {tex}\mathrm{−NH_2}{/tex}. The product is

A

{tex}o{/tex}-bromoaniline

B

{tex} 2,4,6 {/tex} -tribromoaniline

C

{tex}p{/tex}-bromoaniline

mixture of {tex}o{/tex}-and {tex}p{/tex}-bromoaniline

Explanation

Acylated Aniline on bromination produces monosubstituted product(ortho or para).Here acylation reduces activating effect towards electophilic attack

 

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Q 13. 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

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Q 14. Which one of the following is the strongest base in aqueous solution?

A

Methylamine

B

Trimethylamine

C

Aniline

Dimethylamine

Explanation


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Q 15. Tautomerism will be exhibited by

A

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

B

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

C

{tex} \mathrm { R } _ { 3 } \mathrm { CNO } _ { 2 } {/tex}

{tex} \mathrm { RCH } _ { 2 } \mathrm { NO } _ { 2 } {/tex}

Explanation

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Q 16. Amongst the compounds given, the one that would form a brilliant colored dye on treatment with {tex} \mathrm { NaNO } _ { 2 } {/tex} in dil.{tex} \mathrm {HCl} {/tex} followed by addition to an alkaline solution of {tex} \beta {/tex}-naphthol is

A

B

D

Explanation

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Q 17. In the chemical reaction,
{tex} \mathrm { CH } _ { 3 } \mathrm { CH } _ { 2 } \mathrm { NH } _ { 2 } + \mathrm { CHCl } _ { 3 } + 3 \mathrm { KOH } \rightarrow {/tex} {tex} ( \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

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Q 18. Which of the following is not an explosive?

A

Nitroglycerine

{tex}o{/tex}-Aminotoluene

C

Dynamite

D

Trinitrotoluene

Explanation

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Q 19. High basicity of {tex}\mathrm{Me_2NH}{/tex} relative to{tex}\mathrm{Me_3N}{/tex} is attributed to:

effect of solvent

B

inductive effect of {tex}\mathrm{Me}{/tex}

C

shape of {tex} \mathrm { Me } _ { 2 } \mathrm { NH } {/tex}

D

shape of {tex} \mathrm { Me_{3}N } {/tex}

Explanation

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Q 20. In the following reaction, {tex} \mathrm X {/tex} is

A

Benzoic acid

B

Salicyclic acid

C

Phenol

Aniline

Explanation

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Q 21.
The product {tex}(A){/tex} will be -

{tex} \mathrm { RNHCOCH } _ { 3 } {/tex}

B

{tex} \operatorname { RN } \left( \mathrm { COCH } _ { 3 } \right) _{2}{/tex}

C

{tex} \mathrm { R\overset{+}N } \left( \mathrm { COCH } _ { 3 } \right) _ { 3 } \mathrm { Cl^- } {/tex}

D

{tex} \mathrm { R } - \mathrm { CONH } _ { 2 } {/tex}

Explanation

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Q 22.
The alkene formed as a major product in the above elimination reaction is

A

B

C

Explanation


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Q 23. {tex} \mathrm { N }- {/tex}ethyl benzene sulphonyl amide is strongly acidic and soluble in alkali due to presence of

A

strong electron donating sulphonyl group.

strong electron withdrawing sulphonyl group.

C

weak electron donating sulphonyl group.

D

weak electron withdrawing sulphonyl group.

Explanation