Which one of the following characteristics is not correct for physical adsorption?

Two statements are given below.
Statement-$I$: Adsorption of a gas on the surface of charcoal is primarily an exothermic reaction.
Statement-$II$: $A$ closed vessel contains $O_2, H_2, Cl_2, NH_3$ gases. Its pressure is $P \ atm$. About $1 \ g$ of charcoal is added to this vessel and after some time its pressure was found to be less than $P \ atm$.
The correct answer is:

Select the graph that correctly describes the adsorption isotherms at two temperatures $T_{1}$ and $T_{2}$ $\left(T_{1}>T_{2}\right)$ for a gas :
($x-$ mass of the gas adsorbed ; $m-$ mass of adsorbent ; $P -$ pressure)

Given below are two statements.
Statement-$I$: Easily liquefiable gases are readily adsorbed.
Statement-$II$: Adsorption enthalpy for physisorption is less compared to adsorption enthalpy for chemisorption.
The correct answer is

Why is chemisorption referred to as activated adsorption?

Which gas will be adsorbed on a solid to a greater extent?