Question

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

• A. involved van der waals forces are universal
• B. gases involved behave like ideal gases
• C. enthalpy of adsorption is low
• D. it is a reversible process

Answer 1

The correct option is A involved van der waals forces are universal

Involved van der waals forces are universal.

This phenomenon involves the use of weak Van der Waal forces by means of which gas molecules get adsorbed on a solid surface.

There is no specificity as any gas can be adsorbed onto the surface.