Chemical Process
Fluorescent dyes are added in detergents to

Act as tarnish inhibitor for metals like German silver
None of these
Act as fabric brightener (by converting ultraviolet light to visible light) thereby improving the whiteness appearance of white fabrics
Attain distinctiveness from other brands

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Chemical Process
DDT stands for

Dichloro-diphenyl-trichloroethane
Diethyl-diphenyl-trichloromethane
Dichloro-diphenyl-trichloromethane
Diphenyl-dichloro-trichloromethane

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