[1994]
(a) Pesticides
(b) dyes
(c) proteins
(d) vitamins
Correct Answer: 50.(b)
Solution: (b) Azo dyes can be prepared by diazotizing an aromatic amine and subsequent coupling with a suitable aromatic phenol or amine
p-Dimethyl amino azobenzene is used as a dye for colouring polishes, wax products and soap.
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