which one of the following characteristics is correct for physical adsorption ?

Options

A. It is very specific
B. Adsorption on solids is irreversible
C. Adsorption decreases with decrease in temperature
D. Generally, both enthalpy and entropy of adsorption are negative

Answer

D

Explanation

Physisorption is not specific, reversible in nature and decreases with increase in temperature. But both enthalpy and entropy of adsorption are negative so option .d. is correct.