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NEET levelSingle correct optionDifficulty 1 of 3sc008

At the same temperature and pressure, which gas is adsorbed to the greatest extent on activated charcoal?

A $H X_{2}$
B $He$
C $CO X_{2}$
D $N X_{2}$

Answer: C

Easily liquefiable gases with higher critical temperatures are adsorbed more strongly.

CO X_{2}

(critical temperature

304 K

) is far more easily liquefied than

N X_{2}

,

H X_{2}

or

He

.

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