Question

Assertion : In strongly acidic solution, aniline becomes less reactive towards electrophilic reagents.
Reason : Due to protonation of amino group the lone pair of electrons on nitrogen is not available for donation to benzene ring by resonance.

• A. If both assertion and reason are true and reason is the correct explanation of assertion
• B. If both assertion and reason are true but reason is not the correct explanation of assertion
• C. If assertion is true but reason is false
• D. If both assertion and reason are false

Answer 1

Answer: (A)

In strongly acidic medium, aniline is protonated, so $LP$ es are not available to produce mesomeric or electromeric effect; thus, aniline becomes less reactive towards SE reactions.