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

Options

A. If both assertion and reason are true and the reason is the correct explanation of the assertion.
B. If both assertion and reason are true but reason is not the correct explanation of the assertion
C. If assertion is true but reason is false.
D. If the assertion and reason both are false.

Answer

B

Explanation

The alkyl benzene is not prepared by Friedel-Craft’s alkylation of benzene because the monoalkyl product formed undergoes alkylation to produce polyalkylated benzene
The reason that alkyl halides are less reactive than acyl halides is also correct but this is not the correct explanation of assertion.