Chemical Process
Which of the following is used as a coagulant in treating turbid water?

Ferric sulphate
Activated carbon
Chlorine
Calcium sulphate

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Chemical Process
Fluorescent dyes are added in detergents to

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

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