The correct statement(s) pertaining to the adsorption of a gas on a solid surface is (are)
(A) Adsorption is always exothermic
(B) Physisorption may transform into chemisorption at high temperature
(C) Physiosorption increases with increasing temperature but chemisorption decreases with increasing
temperature
(D) Chemisorption is more exothermic than physisorption, however it is very slow due to higher energy of
activation