Which statement is not correct? (A) Physical adsorption is due to van der Waals' forces (B) Phys...

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Which statement is not correct?
(A) Physical adsorption is due to van der Waals' forces
(B) Physical adsorption decreases at high temperature and low pressure
(C) Physical adsorption is reversible
(D) Adsorption energy for a chemical adsorption is generally lesser than that of physical adsorption
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