Question

Assertion: p-Nitrophenol gives more electrophilic substituted compound than m- methoxy phenol.
Reason: Methoxy group shows only negative I-effect.

• 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: (D)

In $p$ -nitrophenol, $- NO _{2}$ group has $-I$ effect, as a result of which electron density decreases on the benzene ring, hence reactivity towards electrophilic substitution decreases. Methoxy group shows both $+R$ (due to lone pair of electrons on $O$ ) and $-I$ effect (due to greater electronegativity of $O$ ).

$- OCH _{3}$ at meta-position shows only $-I$ effect but lesser than $-I$ effect of $- NO _{2}$ group.