Chemical Process
High acid value of an oil or fat is an indication of

Absence of unsaturation
Its smaller molecular weight
Storage under improper conditions
None of these

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Chemical Process
Linde process of gas liquefaction employs

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

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