Suitable product of this reaction is (a) (b) (c) (d)

The following reaction is shown below: Hence, the correct option is (b). 138. Identify the correct order of reactivity in electrophilic substitution reactions of the following compounds (I) (II) (III) (IV) (a) I > II > III > IV (b) IV > III > II > I (c) II > I > III > IV (d) II > III > I > IV We know that more the number of electron donating methyl groups present, more will be the reactivity of ring towards electrophillic substitution. More the number of electron withdrawing carbonyl groups present, lesser will be the reactivity of ring towards electrophillic substitution. The presence of chlo