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In physisorption , the molecules of adso...

In physisorption , the molecules of adsorbate held to the adsorbent by

A

chemical forces

B

ionic forces

C

van der Waals' forces

D

None of these

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The correct Answer is:
C
Weak van der Waals' forces are responsible for physisorption .
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-SURFACE CHEMISTRY-EXERCISE 2
  1. The role of the activation charcoal in gas mask used coal mine is

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  2. Gas mask is prepared on the basis of adsorption because

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  3. Adsorption of gaseous moleculesof hydrogen on Pd is known as

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  4. Point out the correct statement .

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  5. Plot of log x/m against log p is a straight line inclined at an angle ...

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  6. Choose the incorrect statement .

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  7. Powdered substances are more effective adsorbents than their crystalli...

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  8. The linear plot for Freundich adsorption isotherm is

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  9. In general, H(2) gas is adsorbad on activated charcoal to a less exten...

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  10. For a positively charged sol , the flocculating power of KCl , MgCl(2)...

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  11. LANGMUIR ISOTHERM

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  12. Which of the following is the correct approximate value of ratio of si...

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  13. How will you test whether a given solution is a colloidal solutio...

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  14. Which of the following is incorrect about adsorption ?

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  15. In physisorption , adsorbent does not show specificity for any particu...

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  16. Adsorption is always exothermic in nature , Do you agree ?

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  17. A colloidal solution is subjected to an electrical field. The particle...

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  18. Identify the gas which is readily adsorbed by activated charcoal .

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  19. In physisorption , the molecules of adsorbate held to the adsorbent by

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  20. In general , which of the following gets adsorbed readily ?

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