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The correct statement(s) pertaining to t...

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

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The correct Answer is:
A, B, D
a. adsorption is always exothermic (factual statement).
b. It is also a factuaal statement.
The statement is wrong. Physisorption decreases with increases in temperature. But chemisorption first increases with increases in temperature and then decreases. The effect is called activated adsorption.

d. It is a factual statement.
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