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JIPMER2004ChemistrySurface Chemistry

Which of the following statement is not correct?

Options

  1. AAdsorption energy for chemical adsorption is generally greater than that of physical adsorption
  2. BPhysical adsorption is due to van der Waal forces
  3. CPhysical adsorption decreases at high temperature and low pressure
  4. DPhysical adsorption is irreversible

Correct answer

D. Physical adsorption is irreversible

Step-by-step solution

Physical adsorption is due to van der Waal's forces which are weak forces, hence this type of adsorption is reversible and not irreversible. All other statements are correct.

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