• Aniline reacts with bromine in presence water at room temperature to give a 2,4,6-tribromoaniline, bromination of aniline is an example of electrophillic substitution preferable to the ortho and para position (because these 2 positions of aniline are more electrophillic due to activated benzene ring of amino group)

acylation of aniline is also an example of electrophillic substitution reaction.

(ii) Coupling reaction of aryl diazonium salts (iii) Diazotisation of aniline are not electrophillic substitution reaction.