MHT CET 2025 Chemistry question

Not in JEE Main or NEET syllabus

Which of the following is NOT a characteristic of chemisorption?

(A)It is specific.
(B)Heat released is in the range of 40.200 kJ/mol.
(C)Formation of multimolecular layer of adsorbate.Correct
(D)It is irreversible.

Answer: (C)

Solution

Chemisorption involves chemical bond formation between adsorbate and adsorbent. It is highly specific (A is a characteristic), has a high enthalpy of adsorption of the order of 40-400 kJ/mol (B, with the range given as 40-200 kJ/mol), and is irreversible (D). Because the adsorbate is held by

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Question ID VK-103299