1.

Assertion:Alkyl benzene is not prepared by Friedel-Crafts alkylation of benzene . Reason:Alkyl halides are less reactive than acyl halides

Answer»

If both assertion and reason are true and the reason is the correct explanation of the assertion
If both assertion and reason are true butreason is not the correct explanation of the assertion
if assertion is true but reason is false
If assertion and reason both are false

Solution :The alkyl BENZENE is not prepared by FRIEDEL -Craft's alkylation of benzene because the monoalkyl product formed UNDERGO alkylation to produce polyalkylated benzene . The reason the alkyl HALIDES are less reactive than acylhalides is ALSO correct but this is not the correct explanation of assertion


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