Question

Replacement of Cl of Chlorobenzene to give phenol requires drastic conditions, but Cl of 2,4-dinitro chlorobenzene is readily replaced. This is because, 

(1) – NO₂ group withdraws electrons from meta position 

(2) – NO₂ withdraws electrons from ortho and para positions 

(3) – NO₂ group makes the ring electron rich at ortho and para positions 

(4) – NO₂ donate electrons at meta position

Answer 1

Correct option (2) – NO₂ withdraws electrons from ortho and para positions

Explanation:

– NO₂ group is highly electron withdrawing by resonance.