Question

Identify the correct order of reactivity in electrophilic substitution reactions of the following compounds:

• A. I > II > III > IV
• B. IV > III > II > I
• C. II > I > III > IV
• D. II > III > I > IV

Answer 1

The correct option is C II > I > III > IV

Due to $+I$ effect $-C{H}_3$ group to an activating group $N{O}_2$ has a strong $-I$ & $-M$ effect $Cl$ has a weak $-I$ effect.

Therefore toulene has a higher electron denolty than benzene, nitrobenzene & cholrobenzene.

Thus the overall reactivity order is

Ans $2>1>3>4$