Chemical Process
Liquefaction of gases can not be done by

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

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Chemical Process
Shaving soaps are

High free alkali soaps having excess of cane sugar and alcohol
None of these
Metalic soaps compounded with frothing agents
Soft potassium soaps (potassium salt of fatty acid) with free stearic acid to give lather a lasting property

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