Chemical Process
Use of chlorine in the treatment of sewage

Aids in flocculation
Causes bulking of activated sludge
Increases the biological oxygen demand(BOD)
Helps in grease separation

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Chemical Process
Wax is a

Mixture of esters of polyhydric alcohols excepting glycerine
Mixture of glycerides
Mixture of glycerides of fatty acids
Liquid at room temperature

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Chemical Process
Presence of sodium tripolyphosphate (an additive) in synthetic detergent

Inhibits its corrosive effects
None of these
Facilitates its use even in hard water (by sequestering the water-hardening Ca & Mg ions)
Does not allow redeposition of dirt on the cleaned surface

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