Which of the following statements is incorrect regarding physisorption ?

Options

A. Under high pressure, it results into multimolecular layer on adsorbent surface.
B. Enthalpy of adsorption `(Delta_(ads) H)` is low and positive.
C. It occurs because of vander Waals forces
D. More easily liquefiable gases are adsorbed readily

Answer

B

Explanation

Adsorption is an exothermic process and thus `Delta_(ads)` .H has a negative value