115 WIUNG but reason is correct statement
i Assertion: Chemisorption involves high energy of activation.
Reason: Molecules of hydrogen dissociate to form hydrogen atom which is held
the surface by chemisorption.
ii. Assertion: Easily liquefiable gases are readily absorbed.
Reason: 1g of methane absorb more sulphur dioxide than activated charcoal
iii. Assertion: finely divided metals and porous substances having large surface
are good adsorbents.
Reason: The extent of adsorption increases with the increase of the surfac
the adsorbent
v. Assertion: Enthalpy of adsorption is quite low.
Reason: The attraction between gas molecules and solid surface is only
van der Waals' forces.
Assertion: physisorption is highly specific in nature.
for adsorption. .
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