The correct statement(s) pertiaining to the adsorption of a…

Chemistry Surface Chemistry JEE ADVANCED Previous Year Question Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 12, 2026

The correct statement(s) pertiaining to the adsorption of a gas on a solid surface is (are)

Adsorption is always exothermic

Physisorption may transform into chemisorption at high temperature

Physisorption increases with increasing temperature but chemisorption decreases with increasing temperature

Chemisorption is more exothermic than physisorption, however it is very slow due to higher energy of activation.

Text Solution

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The correct answer is:

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(a,b,d)

Δ H = –ve for adsorption

fact

chemical bonds are stronger than vander waal’s forces so chemical adsorption is more exothermic

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