MHT CET 2026 Chemistry question

Not in JEE Main or NEET syllabus

Which of following forces is responsible for physisorption ?

(A)Coulombic force
(B)Electrostatic force
(C)London force of dispersionCorrect
(D)Hydrogen bonding

Answer: (C)

Solution

In physisorption (physical adsorption) the adsorbate is held on the surface by weak van der Waals forces, mainly London dispersion forces; it is reversible, non-specific, has a low enthalpy of adsorption (20-40 kJ/mol) and decreases with increasing temperature.

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Question ID VK-100883