How many of the following statements is/are true ?
(1) Silica gel absorbs water molecules from moist air.
(2) The entropy of gas decreases when it gets adsorbed on charcoal.
(3) Heterogeneous catalysts like Ni(s) in the hydrogenation of vegetable oil function by chemisorption.
(4) The enthalpy of physisorption is smaller in magnitude than enthalpy of chemisorption.
(5) As temperature increases, the extent of physisorption decreases but it can get converted to chemisorption at higher temperature.

Graph A represent chemisorption and graph B represent physisorption.