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Which of the following statements is inc...

Which of the following statements is incorrect?

A

Adsorption always leads to a decrease in enthalpy and entropy of the system

B

Adsorption arises due to unsaturation of valence forces of atoms or molecules on the surface

C

Adsorption increases with rise in temperature

D

Adsorption decreases the surface energy

Text Solution

Verified by Experts

The correct Answer is:
C
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MARVEL PUBLICATION-SURFACE CHEMISTRY-MULTIPLE CHOICE QUESTIONS - HIGHER LEVEL
  1. At low pressure, the fraction of the surface covered follows

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  2. At high pressure, the entire surface gets covered by a monomolecular l...

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  3. Which of the following statements is incorrect?

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  4. During adsorption

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  5. which of the following statements is not correct ?

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  6. The isoelectric point of a colloidally dispersed material is the pH va...

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  7. peptization involves :

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  8. Which of the following is not the property of hydrophilic solutions ?

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  9. Which one of the following characteristics is not correct for physical...

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  10. The dispersed phase in colloidal iron (III) hydroxide and collodial go...

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

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  12. In the fermentation of sugar, glucose is converted into alcohol and CO...

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  13. The volume of gases H(2), CH(4), CO(2) and NH(3) adsorbed by 1 g of ch...

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  14. Protons accelerate the hydrolysis of esters . This is an example os :

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  15. Which of the following is correct ?

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  16. Colloidal solution in which the dispersed phase has little affintiy fo...

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  17. Collioidal sols can be purified by

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  18. An example of micelle is

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  19. The movement of dispersion medium under the influence of an electric f...

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  20. Which of the following electrolyte is most effective in causing the co...

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