Liquefaction of gases cannot be done by________?

6460Chemical EngineeringMedium

AAdiabatic expansion against a piston or in a turbine

BAdiabatic expansion through a throttle valve (Joule-Thomson expansion)

CMerely compressing it beyond critical pressure

DExchange of heat with colder stream

Correct answer

C. Merely compressing it beyond critical pressure

Explanation

The correct answer is Merely compressing it beyond critical pressure.

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