| Following are the properties related to adsorption: |
| I. Reversible |
| II. Results into unimolecular layer |
| III. Low heat of adsorption |
| IV. Occurs at low temperature and decreases with increasing temperature. |
| Which of the above properties are for physical adsorption? |
A) I, II, III only
B) I, III, IV only
C) II, III, IV only
D) I, III only
Correct Answer: B
Solution :
[b]: Physical adsorption results into multi molecular layers on adsorbent surface under high pressure. While chemical adsorption results into unimolecular layer.
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