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JEE Main 2009
Exam
JEE Main
Year
2009
Subject
Chemistry
Chapter
Surface Chemistry

JEE Main 2009 · Chemistry · Surface Chemistry

Which of the following statements is incorrect regarding...

Which of the following statements is incorrect regarding physissorptions ?

Options

  1. AIt occurs because of vander Waal's forces.
  2. BMore easily liquefiable gases are adsorbed readily.
  3. CUnder high pressure it results into multi molecular layer on adsorbent surface.
  4. DEnthalpy of adsorption (ΔHadsorption )\left(\Delta \mathrm{H}_{\text{adsorption }}\right) is low and positive.

Correct answer

D. Enthalpy of adsorption (ΔHadsorption )\left(\Delta \mathrm{H}_{\text{adsorption }}\right) is low and positive.

Step-by-step solution

Enthalpy of adsorption regarding physissorption is not positive and it is negative.
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