For an adsorption of H2 on Ni surfaceNi(s)+H2(s)⟶ adsorbed H2 onNisurface. Variation of adsorption with temperature is shownThis indicates that

(1) As temperature increases adsorption decreases Thus, based on Le-Chatelier's principle, it is an exothermic change. Thus, it is correct.(2) Physical adsorption decreases with increase in temperature thus, correct.