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Assertion: Physical absorption of molecu...

Assertion: Physical absorption of molecular takes place on surface only.
Reason: In this process, the bonds of the absorbed molecules are not broken.

A

If both assertion and reason are true and the reason is the correct explanation of the assertion.

B

If both assertion and reason are true and the reason is not the correct explanation of the assertion.

C

If assertion is true but reason is false.

D

If assertion is false but reason is true.

Text Solution

Verified by Experts

The correct Answer is:
D
The assertion that physical absorption of molecules takes place on surface only is false. Actually, absorption takes place on the whole body. In physical absorption the bonds of absorption molecules are not broken.
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A2Z-SURFACE CHEMISTRY-Section D - Chapter End Test
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  2. Example of an intrinsic colloid is

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  3. colloidal solution of arsenious sulphide is coagulated by

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  4. Gold number gives

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  5. Point out the false statement

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  6. which of the following does not contain a hydrophobic structures.

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  7. The function of gum arabic in the preparation of Indian ink is

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  8. Which of the following gases is adsorbed most by activated charcoal?

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  9. Spherical gold paricles of radius 10nm, then the number of gold partic...

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  10. Which of the following forms cationic micelles above certain concentra...

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  11. In Frenudlich adsorption isotherm si proportional to pressure P as

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  12. Noble gases are adsorbed by

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  13. Adam's catalyst is

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  14. Which of the following types of metal form the most efficient catalyst...

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  15. As(2)S(3) has a negative charge. Capacity to precipate it is highest i...

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  16. Which of the following ielectrolytes is least effective in causing flo...

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  17. Ferric hydroxide sol is positively charged colloid. The coagulating po...

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  18. Assertion: According to Freundlich: x/m k.P^(1//n) Reason: The isot...

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  19. Assertion: For the coagulation of sols carrying positive charge, PO(4)...

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  20. Assertion: Physical absorption of molecular takes place on surface onl...

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