question_answer

Aniline when diazotised in cold and then treated with dimethyl aniline gives a coloured product. Its structure would be

A)  

B)  

C)  

D)  

Correct Answer: C

Solution :

                Aniline on diazotisation in cold (at \[0{}^\circ \] to\[5{}^\circ C\]) gives benzene diazonium chloride.            This benzene diazonium chloride on coupling reaction withdimethyl aniline gives a coloured product i.e., p-(N, N-dimethyl) amino azobenzene (azo dye).