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Solution


Q.

The correct order of reactivity of following haloarenes towards nucleophilic substitution with aqueous NaOH is:

Choose the correct answer from the options given below:                  [2023]
1 D > C > B > A  
2 A > B > D > C  
3 C > A > D > B  
4 D > B > A > C  

Ans.

(4)

Chlorobenzene undergoes aromatic nucleophilic substitution via carbanion intermediate. In such a reaction greater the –M group (–NO2, –CN etc.) at o and p-position, greater the stability of carbanion intermediate and faster the rate of reaction.