Assertion: Friedel-Craft’s reaction is used to introduce an alkyl or acyl group in the benzene nucleus. Reason: Benzene is a solvent for Friedel-Craft’s alkylation of bromobenzene.

Friedel craft’s reaction is generally used to introduce alkyl or acyl group in a reaction called alkylation and acylation, respectively. In Friedel craft’s alkylation of bromobenzene, if benzene is used as a solvent it will undergo alkylation because it is more reactive than bromobenzene. Thus, the assertion is true but the reason is false. Hence, the correct option is (c).