Benzene diazonium chloride on reaction with phenol in weakly basic medium gives

Options

A. diphenyl ether
B. p-hydroxy azobenzene
C. chlorobenzene
D. benzene

Explanation

Diazo coupling reaction of phenol involves an electrophilic substitution reaction on phenol through the diazonium electrophile. The formed dye is p-hydrozyazobenzene which is orange is colour. A similar reaction will also be observed by using anilline in place of phenol. In this case the dye formed is a yellow coloured dye.