JEE MAIN - Chemistry (2007 - No. 3)
Presence of a nitro group in a benzene ring
activates the ring towards electrophilic substitution
renders the ring basic
deactivates the ring towards nucleophilic substitution
deactivates the ring towards electrophilic substitution
Paliwanag
Nitro group is electron withdrawing group, so it deactivities the ring towards electrophilic substitution.