Home Chemistry Haloalkanes and Haloarenes NCERT Replacement of Cl of chlorobenzene to give p…
Chemistry Haloalkanes and Haloarenes NCERT Single Correct MCQ
Published on: August 14, 2026

Replacement of Cl of chlorobenzene to give phenol requires drastic conditions but chlorine of 2,4-dinitrochlorobenzene is readily replaced because

A
NO 2 makes the electron rich ring at ortho and para positions
B
NO 2 withdraw electrons at metaposition
C
NO 2 donates electrons at m-position
D
NO 2 withdraws electrons at ortho and para positions

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Verified by Experts
The correct answer is:
D

NO 2 groups withdraw electrons at orthoand para-position and then deactivate the ring. This deactivation of ring stabilises the negatively charged intermediates formed during the reaction and therefore, increases the reactivity towards replacement.

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