Question

Assertion. Alkylbenzene is not prepared by Friedel-Crafts alkylation of benzene.
Reason. Alkyl halides are less reactive than acyl halides.
A. If both assertion and reason are true, and reason is the true explanation of the assertion.
B. If both assertion and reason are true, but reason is not the true explanation of the assertion.
C. If assertion is true, but reason is false.
D. If both assertion and reason are false

Answer 1

Correct Answer - B
Correct explanation. Due to +I - effect to the alkyl group, electron density increases in alkylbenzene relative to benzene and hence further substitution occurs to form a poly alkyl substituted benzene.