Question

The azo-dye (Y) formed in the following reactions is: Sulphanilic acid + NaNO$_2$ + CH$_3$COOH → X

• A.
• B.
• C.
• D.

Answer 1

Answer: (D)

Answer 2

The reaction involves the diazotization of sulphanilic acid, which forms a diazonium salt. This diazonium salt then couples with the compound $C_6H_5NH_2$, leading to the formation of the azo-dye product $Y$.

The structure of $Y$ matches option (4) in which the diazonium ion is coupled with the benzene ring of $C_6H_5NH_2$, forming the characteristic azo linkage ($-N=N-$) between the two aromatic rings.

Thus, the correct answer is: Option (4)