Benzene gives some addition reactions. Some typical reactions are:
Addition of hydrogen
Benzene on reduction with hydrogen under pressure in the presence of finely divided nickel at 200°C, gives an addition product hexahydrobenzene (cyclohexane).
Addition of chlorine
Chlorine adds on to benzene at its boiling point, in the presence of bright sunlight, to give hexachloride.
Addition of ozone
Benzene reacts slowly with ozone to form triozonide. Triozonide on hydrolysis with water gives glyoxal.
Benzene when passed through a red hot iron tube gives diphenyl.