The following reaction is called Fridel-Craft’s reaction. In this reaction ‘X’ is (AFMC 2009) (a) (b) (c)

Friedel craft’s reactions are generally used to attach substituents to the aromatic ring. Friedel craft’s reaction are of two types i.e. alkylation and acylation. The Friedel craft’s alkylation involves the addition of an alkyl group to an aromatic ring and the Friedel craft’s acylation includes the addition of an acyl group to an aromatic ring. The following reaction is shown below: Hence, the correct option is (a). HYDROCARBONS 33