question_answer

Aniline on treatment with\[NaN{{O}_{2}}\]in\[HCl\]at \[0{}^\circ C\]followed by treatment with alkaline \[\beta -\]naphthol gives:

A)  a violet solution              

B)  a red solution

C)  a green solution

D)         a blue precipitate

E)  a canary yellow precipitate

Correct Answer: B

Solution :