Question

Which of the following conditions is most favourable for converting a gas into liquid?

A
High pressure, low temperature
B
Low pressure, low temperature
C
Low pressure, high temperature
D
High pressure, high temperature

Solution

The correct option is A High pressure, low temperatureThe liquid can be changed in phase transformation to a gas by evaporation and a gaseous phase can be changed into liquid by condensation under conditions of high pressure and low temperature. For example, to change nitrogen into a liquid we need to cool it down below about $$-200 ^oC$$ and apply high pressure.Option A is correct.Physics

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