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MHT CET Chemistry Surface Chemistry 2026 MHT CET 2026 (19 April Shift 2)

MHT CET Chemistry Question (2026) — Solution

Question

Which of following forces is responsible for physisorption ?

Options

  1. A. Coulombic force
  2. B. Electrostatic force
  3. C. London force of dispersion
  4. D. Hydrogen bonding

Answer

C. London force of dispersion

Step-by-step solution

Physisorption, also known as physical adsorption, arises due to weak van der Waals forces between the adsorbate and the adsorbent. London force of dispersion is a type of van der Waals force and is the primary force responsible for physisorption. Coulombic and electrostatic forces are strong forces typically associated with ionic interactions or chemisorption, while hydrogen bonding is a specific dipole-dipole interaction not universally responsible for physisorption. Answer: London force of dispersion

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