Question

Electrophilic substitution reactions in haloarenes occur slowly and require more drastic conditions as compared to those in benzene. Halogens are ortho and para-directors.

• 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: (B)

If both assertion and reason are true but reason is not the correct explanation of assertion.

Answer 2

Halogen atom because of its $-I$ effect has some tendency to withdraw electrons from the benzene ring, as a result, the ring gets somewhat deactivated as compared to benzene.