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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Chemical Process
Comparing sulphate process with sulphite process, we find that __________ in the later.

Temperature is more in the former whereas pressure is more
Both temperature & pressure in the former is more than that
Pressure is more in the former whereas temperature is less
Both temperature & pressure in the former is less than that

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