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JEE Main levelSingle correct optionDifficulty 2 of 3rg167

For a real gas at the same $T$ and $P$ as an ideal gas, $Z = 0.5$ means that

Athe real gas occupies half the volume the ideal gas would
Bthe real gas occupies twice the volume the ideal gas would
Cthe real gas has half the pressure
Dthe real gas has half the temperature

Answer: A

Z = V_{real} / V_{ideal}

at fixed

n

,

T

and

P

.

Z = 0.5

means the real volume is half the ideal volume: the gas is strongly compressed by its own attractions.

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