Chemical Process
The difference between saponification value and acid value is

Always negative
None of these
Called ester value
Constant for all fatty oils

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Chemical Process
Linde process of gas liquefaction employs

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

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