The nitro group in the benzene nucleus is ______ directing. It ______ the reactivity of the benzene ring.

-CHO group on benzene nucleus -

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

Reaction OF Aromatic Benzene Ring

Assertion (A) Presence of a nitro group at ortho or para position increases the reactivity of haloarenas towards nucleophilic substitution. Reason (R ) Nitro group, being an electron withdrawing group decreases the electron density over the benzene ring.