1.

Assertion : Physical adsorption increases with increase in temperature. Reason : Physical adsorption is an endothermic process.

Answer»

If both assertion and REASON are true and reasonis the CORRECT explanation of assertion.
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
if both assertion and reason are false

Solution :Physical adsorption is an exothermic process.
Solid + GAS `hArr` Gas/Solid + Heat
So according to Le-Chatelier PRINCIPLE it will decrease with increasing temperature.


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