1.

The correct statements about adsorption are

Answer»

the chemisorption of `H_(2)` as H atoms on the SURFACE of GLASS is endothermic
PHYSICAL adsorption does not REQUIRE activation energy
chemisorption is always unimolecular
in adsorption, only solute from the solution is adsorbed on the surface of the SOLID adsorbent.

Solution :Solvent from the solution may be adsorbed on the adsorbent (negative adsorption).


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