question_answer

Presence of a nitro group in a benzene ring

A)  renders the ring basic

B)         deactivates the ring towards nucleophilic substitution

C)         deactivates the ring towards electrophilic substitution

D)         activates the ring towards electrophilic substitution

Correct Answer: C

Solution :

Presence of a nitro group in a benzene ring deactivates the ring towards electrophilic substitution preferably to ortho and para positions. This is clear from the following resonatic structure