Replacement of $C l$ of chlorobenzene to give phenol requires drastic conditions but $C l$ of $2, 4, 6$ - trinitro chloro benzene is readily replaced because:

N O_{2}

makes ring electrons rich at ortho and para positions

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N O_{2}

withdraws electrons from meta position

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N O_{2}

donates electrons at meta position

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N O_{2}

withdraws electrons from ortho, para positions

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Solution

The correct option is D $N O_{2}$ withdraws electrons from ortho, para positions
Benzene doesn't undergo nucleophilic substitution reaction easily but as number of $N O_{2} -$ (electron withdrawing group) group increases, benzene become electron deficient and it undergoes nucleophilic substitution.
When $- N O_{2}$ present at ortho and para to chlorine then nucleophilic substitution occurs.

So $2, 4, 6$ - trinitro chlorobenzene reacts with $N a O H$ and perform nucleophilic substitution reaction.

Option D is correct.

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Similar questions

Assertion (A): - $N O_{2}$ group is benzene ring deactivating and m - directing group

Reason (R): - $N O_{2}$ group with draws electron density from benzene ring and makes ortho and para positions more electron deficient than meta position

Assertion (A): - $N O_{2}$ group is benzene ring deactivating and m - directing group

Reason (R): - $N O_{2}$ group with draws electron density from benzene ring and makes ortho and para positions more electron deficient than meta position

Q. Replacement of

C l

of chlorobenzene to give phenol requires drastic conditions, but

C l

2, 4

-dinitrochlorobenzene is readily replaced. This is because :

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

[CBSE PMT

Q. Replacement of chlorine from chlorobenzene to give phenol requires drastic conditions but chlorine of

2, 4

-dinitrochlorobenzene is readily replaced because:

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Replacement of Cl of chlorobenzene to give phenol requires drastic conditions but Cl of 2,4,6 - trinitro chloro benzene is readily replaced because:

Replacement of $C l$ of chlorobenzene to give phenol requires drastic conditions but $C l$ of $2, 4, 6$ - trinitro chloro benzene is readily replaced because: