can be liquefied if its temperature is more than critical temperature
can not be liquefied under any value of T and P
can be liquefied if its pressure is more than critical pressure
can be liquefied at any value of any value T and P
A
can be liquefied at any value of any value T and P
B
can be liquefied if its temperature is more than critical temperature
C
can be liquefied if its pressure is more than critical pressure
D
can not be liquefied under any value of T and P
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Solution
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An ideal gas is meant to have no intermolecular force of attraction
That's why a real gas has to reach, lowest pressure and highest temperature enough to overcome the intermolecular force of attraction and behave like an ideal gas.
So ideal gas can't be liquefied at any T and P.
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