Blue colour of PDS kerosene is due to the presence of which dye?
A. Phenyl azo-naphthol
B. Dialkyl amino anthraquinone
C. Anthraquinone
D. Anthracene
Answer:B
Blue colour of PDS kerosene is due to the presence of which dye?
A. Phenyl azo-naphthol B. Dialkyl amino anthraquinone C. Anthraquinone D. Anthracene