MHT CET 2026 Chemistry question

Not in JEE Main or NEET syllabus

Which of the following assertions about the extent of physisorption is correct?

(A)Increases with increase in temperature
(B)Decreases with increase in surface area
(C)Decreases with increase in the strength of Van der Waals forces
(D)Decreases with increase in temperatureCorrect

Answer: (D)

Solution

Physisorption is caused by weak van der Waals forces and is exothermic ( to kJ/mol). By Le Chatelier's principle, raising the temperature opposes adsorption, so the extent of physisorption decreases with increase in temperature; the correct option is (D). Option (A) is the

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Question ID VK-096211