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Q.

The correct statements about adsorption are

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a

The chemisorption of H2 as H atoms on the surface of glass is endothermic 

b

Physical adsorption does not require activation energy

c

Chemisorption is always unimolecular

d

In adsorption, only solute from the solution is adsorbed on the surface of the solid adsorbent

answer is A, B, C.

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Detailed Solution

(d) Is wrong because solvent from the solution may be adsorbed on the adsorbent (negative adsorption).

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