Azo dyes are prepared from …………
A. Aniline + Phenol
B. Phenol + Phthalic anhydride
C. Phenol + Benzene diazonium chloride
D. Aniline + Phthalic anhydride
Answer:C
Azo dyes are prepared from …………
A. Aniline + Phenol B. Phenol + Phthalic anhydride C. Phenol + Benzene diazonium chloride D. Aniline + Phthalic anhydride