Chemical Process
Lindane is

A by-product of BHC manufacture
Both B and C
BHC (Benzene Hexa Chloride) containing 99% γ-isomer
Not a fumigant

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Chemical Process
Fusel oil is a/an

None of these
Essential oil
Extract from medicinal herbs
Mixture of higher molecular weight alcohols (a by-product obtained during production of alcohol from molasses)

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Chemical Process
Liquefaction of gases can not be done by

Adiabatic expansion through a throttle valve (Joule-Thomson expansion)
Exchange of heat with colder stream
Adiabatic expansion against a piston or in a turbine
Merely compressing it beyond critical pressure

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Chemical Process
Oils are partially hydrogenated (not fully) to manufacture vanaspati, because fully saturated solidified oils

Cause cholesterol build up and blood clotting
Have affinity to retain harmful sulphur compounds
Always contain some amount of nickel (as their complete removal is very difficult)
Are prone to rancid oxidation

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