In physical adsorption, the adsorbent and adsorbate are held together by the:

Ionic force

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Covalent force

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Van der Waal's force

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H-bonding

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Solution

The correct option is D Van der Waal's force
In physical adsorption, the force of attraction between the molecules of the adsorbate and adsorbent is of weak Van der Waal's force. This is a weak force of attraction.

So, the correct option is $C$

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What kind of forces exists between adsorbate and adsorbent in chemical adsorption?

Δ G, Δ H, Δ S

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