NEET UG 2022 — Chemistry Organic Chemistry

2022mcqmedium

Given below are two statements:

Statement I:

Primary aliphatic amines react with ${\mathrm{HNO}}_{2}$ to give unstable diazonium salts.

Statement II :

Primary aromatic amines react with ${\mathrm{HNO}}_{2}$ to form diazonium salts which are stable even above $300K$ . In the light of the above statements, choose the most appropriate answer from the options given below

Official previous-year question

Held on 30 Apr 2022 · Verified 9 Jul 2026.

Options

A
Both Statements $I$ and Statement $\mathrm{II}$ are is incorrect.
B
Statement $I$ is correct but Statement $\mathrm{II}$ is incorrect.
C
Statement $I$ is incorrect but Statement $\mathrm{II}$ is correct.
D
Both Statement $I$ and Statement $\mathrm{II}$ are correct.

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Solution

When primary aliphatic amines react with ${\mathrm{HNO}}_{2}$ then unstable diazonium salt, which result in the formation of alcohol and ${N}_{2}$ gas.

And when primary aromatic amines react with ${\mathrm{HNO}}_{2}$ the diazonium salts formed are stable due to resonance stabilisation of the aromatic ring of aryl diazoniun salts.But these are stable only at 273-277 K, at higher temperatures they are unstable.

NEET 2022 Chemistry, Amines — solution figure Hence, Statement $I$ is correct but Statement $\mathrm{II}$ is incorrect.

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Solution

When primary aliphatic amines react with ${\mathrm{HNO}}_{2}$ then unstable diazonium salt, which result in the formation of alcohol and ${N}_{2}$ gas.

NEET 2022 Chemistry, Amines — solution figure Hence, Statement $I$ is correct but Statement $\mathrm{II}$ is incorrect.

NEET UG 2022 — Chemistry Organic Chemistry

Options

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Solution

Your note

NEET UG Organic Chemistry in other years

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NEET UG 2022 — Chemistry Organic Chemistry

Options

Did you get this right?

Solution

Your note

NEET UG Organic Chemistry in other years

More NEET UG Organic Chemistry questions

Other Chemistry topics for NEET UG

Physical Chemistry

Inorganic Chemistry

Keep practicing Organic Chemistry