Q13 / 160 · WBJEE 2015 · Chemistry

A gas can be liquefied at temperature T and pressure $p$ provided

A
$T=T_{c}$ and $p < p_{c}$
Correct answer
B
$T < T_{c}$ and $p>p_{c}$
C
$T>T_{c}$ and $p>p_{c}$
D
$T>T_{c}$ and $p < p_{c}$

Solution

A gas can be liquefied at temperature $T$ when it is lower than critical temperature, $T_{c}$ and pressure $p$ is greater than cntical pressure. Hence. $T < T_{c}$ and $p>p_{c}$

Hence, the correct answer is option: 'B'.

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