The physical adsorption of gases on the solid surface is due to:

covalent bond

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hydrogen bond

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ionic bond

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van der wal's force

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Solution

The correct option is D van der wal's force
When the force of attraction existing between adsorbate and adsorbent are weak Vanderwaal forces of attraction, the process is called Physical Adsorption or Physisorption. When the force of attraction existing between adsorbate and adsorbent are chemical forces of attraction or chemical bond, the process is called Chemical Adsorption.

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Similar questions

Which statement is/are correct?

i) Physical adsorption is due to Van der Waal's forces

ii) Physical adsorption decreases at high temperature

iii) Physical adsorption is irreversible

iv) Enthalpy for a chemical adsorption is generally lesser than that of physical adsorption

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