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Q.

Which of the following statement about physical adsorption is correct?

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a

It involves smaller enthalpy of adsorption as compared to chemisorption

b

It involves van der Waals' interactions between adsorption and adsorbate

c

It is usually monolayer

d

It is reversible in nature

answer is B, C, D.

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Detailed Solution

Reversible physical adsorption occurs naturally. Van der Waals interactions between adsorption and adsorbate are involved. Compared to chemisorption, it has a lower adsorption enthalpy.

Hence, options B, C and D are correct.

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