question_answer 68)

  Why does presence of a nitro group make the benzene ring less reactive in comparison to the unsubstituted benzene ring? Explain.

Answer:

  The meta-directing substituents (like ?\[N{{O}_{2}}\] group) withdraw electrons from the benzene ring and thus, deactivate the benzene ring for further substitution and make the benzene ring less reactive in comparison to the unsubstituted benzene ring.