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Adsorption and Absorption

Which of the ...

Question

Which of the following is an example of absorption?

A

Water on silica gel

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B

Water on calcium chloride

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C

Hydrogen on finely divided nickel

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D

Oxygen on metal surface

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Solution

The correct option is B Water on calcium chloride
Water on calcium chloride. Absorption means penetration of adsorbate molecules into the bulk of the adsorbent. When water is spread over calcium chloride, water get penetrate into bulk of the calcium chloride.

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