Which of the following conditions are not suitable for liquefaction of gases?
Lowering the Temperature
Compressing the gas at any temperature
Compressing the gas as well as cooling
Compressing the gas below critical temperature
Gases cannot be liquefied above critical temperature
Which of the following represent the suitable conditions for the liquefaction of gases?
(a) low temperature, low pressure (b) high temperature, low pressure
(c) low temperature, high pressure (d) high temperature, high pressure