In physical adsorption,the gas molecules are held on a solid surface by

Select the correct statement.

Adsorption of a gas follows the Freundlich adsorption isotherm. In the given plot,$x$ is the mass of gas adsorbed on mass $m$ of the adsorbent at pressure $p$. $\frac{x}{m}$ is proportional to:

When $H_2S$ gas is passed through an arsenious oxide solution,an arsenious sulphide sol is formed. The charge on the particles is due to the adsorption of .......

Given the following data:

Gas	$H_2$	$CH_4$	$CO_2$	$SO_2$
Critical Temp $/ K$	$33$	$190$	$304$	$630$

Based on the data provided,predict which of the following gases shows the least adsorption on a definite amount of charcoal.

The charcoal maintained at $100 \ K$ absorbs