Animal charcoal is used in decolourising liquids because it is a good

Which inert gas is used in chromatography?

If $x$ amount of gas is adsorbed on $m$ amount of adsorbent at pressure $p$,the Freundlich adsorption isotherm plot gives a straight line for which of the following?

In the adsorption of oxalic acid on activated charcoal,the activated charcoal is known as:

Which one of the following gives a straight line for Freundlich adsorption isotherm?

Given below are two statements: one is labelled as Assertion $A$ and the other is labelled as Reason $R.$
Assertion $A:$ $SO_{2(g)}$ is adsorbed to a larger extent than $H_{2(g)}$ on activated charcoal.
Reason $R:$ $SO_{2(g)}$ has a higher critical temperature than $H_{2(g)}.$
In the light of the above statements,choose the most appropriate answer from the options given below.