Nitrogen Containing Compounds Question 72
Question: Azo-dyes are prepared from : [BHU 2004; Pb. CET 2001]
Options:
A) Aniline
B) Salicylic acid
C) Benzaldehyde
D) Chlorobenzene
Show Answer
Answer:
Correct Answer: A
Solution:
When aniline is treated with $ HNO_2 $ at 0?5°C then diazonium salt is formed and by the coupling of diazonium salt and phenol azo dyes are prepared.
BETA
