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If the adsorbate is held on a surface by weak Van der Walls forces

If the adsorbate is held on a surface by weak Van der Walls forces, the absorption process is called

Options

(a) physical adsorption
(b) chemical adsorption
(c) heat of adsorption
(d) enthalpy of adsorption

Correct Answer:

physical adsorption

Explanation:

Particles of the adsorbate are held to the surface of the adsorbent by the physical forces such as van der waals forces, the adsorption is called physical adsorption or physisorption. physical adsorption acan be easily reversed or decreased.

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