Which among the following statements is false ?

The accumulation of molecular species at the surface rather than in the bulk of a solid or liquid is termed adsorption. There are mainly two types of adsorption of gases on solids. If accumulation of gas on the surface of a solid occurs on account of weak van der Waals’ forces, the adsorption is termed as physical adsorption or physisorption. When the gas molecules or atoms are held to the solid surface by chemical bonds, the adsorption is termed chemical adsorption or chemisorption.
(A) Physical adsorption involves van der Waals' forces, so any number of layers may be formed one over the other on the surface of the adsorbent. Chemical adsorption takes place as a result of the reaction between adsorbent and adsorbate. When the surface of adsorbent is covered with one layer, no further reaction can take place. Hence, 'Adsorption may be monolayered or multi-layered' . This statement is true.
(B) Particle size of the adsorbent affects the amount of adsorption. Smaller is the particle size of the adsorbent, higher is the amount of adsorption and vice versa. This is because smaller particle size of the adsorbent corresponds to larger surface area. Hence, the statement 'Particle size of adsorbent will not affect the amount of adsorption' is false.
(C) An increase in pressure decreases the volume of gas and thus increases the adsorption of gas molecules. Conversely, a decrease in pressure will cause the removal of gas molecules from the solid surface. Hence, the statement, 'Increase of pressure increases the amount of adsorption' is true.
(D) Thus, adsorption is inversely proportional to the temperature. This is true for physical adsorption. In chemical adsorption due to the high energy of activation, the extent of adsorption increases initially and decreases as the temperature increases further. Hence, the statement, 'Increase of temperature may decrease the amount of adsorption' is true.
Hence, the statement 'Particle size of adsorbent will not affect the amount of adsorption' is false.