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Which of the following statements is inc...

Which of the following statements is incorrect regarding physissorptions ?

A

It occurs because of vander Waal's forces .

B

More easily liquefiable gases are adsorbed readily.

C

Under high pressure it results into multi molecular layer on adsorbent surface .

D

Enthalpy of adsorption `(DeltaH_("adsorption") )` is low and positive .

Text Solution

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The correct Answer is:
D
Physisorption is not endothermic
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NARAYNA-SURFACE CHEMISTRY -EXERCISE - 3
  1. The homogenous catalysis is shown by

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  2. Which of the following statements are true for hydrophilic solution ?

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  3. Which of the following properties are related to physical adsorption ?

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  4. The best condition for hetergeneous catalysis is

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  5. Gold numbers of protective colloids A, B, C and D are 0.50, 0.01, 0.10...

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  6. Which of the following statements is incorrect regarding physissorptio...

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  7. Select the incorrect statement

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  8. Four different colloids have the following gold number, which one has ...

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  9. Adsorption is an exothermic process. The amount of substance adsorbed ...

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  10. Fog is a colloidal solution of

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  11. Which characteristic is not associated with chemical adsorption?

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  12. Positve Catalyst

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  13. The protecting power of lyophilic colloidal sol is expressed in terms ...

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  14. In freundlich adsorption isotherm, the value of 1/n is :

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  15. Which one of the following statements is incorrect about enzyme cataly...

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  16. According to Hardy schultz law, the floculating power of an ion increa...

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  17. Which property of colloids is not dependent on the change on colloidal...

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  18. Which of the following statement is correct for the spontaneous adsorp...

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  19. Fog is a colloidal solution of

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  20. The coagulation value in millimoles per litre of the electrolyes used ...

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