Properties Of Benzene

In aniline - group is attached with benzene ring. - group shows -effect. So, it activates the benzene ring. Hence, rate of
electrophilic substitution is increased due to increase in the electron density at o/p-position. In case of nitrobenzene, ( ) -M-effect group deactivates the benzene ring, so in nitrobenzene rate of electrophilic substitution is lower than benzene. Hence, order of reaction is