Q. 92

Note : In the fol A. Assertion and reason both are correct and reason is correct explanation of assertion.

B. Assertion and reason both are wrong statements.

C. Assertion is correct but reason is wrong statement.

D. Assertion is wrong but reason is correct statement.

E. Assertion and reason both are correct statements but reason is not correct explanation of assertion.

Assertion : It is difficult to replace chlorine by –OH in chlorobenzene in comparison to that in chloroethane.

Reason : Chlorine-carbon (C—Cl) bond in chlorobenzene has a partial double bond character due to resonance.

Answer :

In chlorobenzene, due to resonance partial double bond character appears in bond between C & Cl atom and we all know that replacing of partial double bond character is bit difficult than replacing single bond as present in C-Cl bond in chloroethane.

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