Question

Assertion: p-Nitrophenol gives more electrophilic substituted compound than m -methoxyphenol.

Reason: Methoxy group shows only negative I-effect.

(a) Both A and R are true and R is the correct explanation of A

(b) Both A and R are true but R is not correct explanation of A

(c) A is true but R is false

(d) A and R are false

Answer 1

The correct option is: (d)

Explanation:

In p-nitrophenol, NO₂ group has -I effect, as a result of which electron density decreases on the benzene ring, hence reactivity towards etectrophilic substitution decreases. Methoxy group shows both +R (due to lone pair of electrons on O) and -I effect (due to greater electronegativity of O). 

- OCH₃ at meta-position shows only -I effect but lesser than -I effect of -NO₂ group.