Question

A gas can be liquefied at temperature T and pressure P provided
a) T = Tc and P<Pc
b) T<Tc and P<Pc
c) T>Tc and P>Pc
d) T>Tc and P<Pc

Answer 1

Answer:

Answer is the option (d)

Answer 2

Answer:

answer is a a gas can be easily liquefied at a temperature less than or equal to critical temperature

whereas in case of pressure the pressure should be greater than critical pressure.