Chemical Process
Viscose rayon

Cannot be made from sulphite pulp
Utilises H₂SO₄, NaOH and CS₂ during its manufacture
None of these
Cannot yield textile grade fibre

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

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

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Chemical Process
DDT stands for

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

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