Question

The most adsorbed gas on activated charcoal is

• A. $N_{2}$
• B. $H_{2}$
• C. $CO_{2}$
• D. $CH_{4}$

Answer 1

Answer: (C)

$CO_{2}$

Answer 2

Easily liquifiable gas gets adsorbed readily over the activated charcoal.
The order of ease of liquification of given gases is
$CO _{2}> CH _{4}> N _{2}> H _{2}$
$\therefore CO _{2}$ is adsorbed most readily by activated charcoal.