1.

Assertion : Physisorption of a gas adsorbed at low temperature may change into chemisorption at a high temperature. Reason : Usually low pressure is also favourable for chemisorption

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 :Usually high pressure is ALSO FAVOURABLE for chemisorption .


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