Ncert Exercises & Solutions

In physisorption adsorbent does not show specificity for any particular gas because..........

1. Involved van der Waals’ forces are universal.

2. Gases involved behave like ideal gases.

3. Enthalpy of adsorption is low.

4. It is a reversible process.

NEETprep Answer:

(1) HINT: van der Waals' forces are involved in physiosorption.

Explanation: In physisorption adsorbent does not show specificity for any particular gas because involved van der Waals’ forces are universal. It means extent of van der Waals’ interaction between adsorbate and adsorbent constant for all gases.

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