A: Physisorption is not specific.
R: Physisorption involves vanderwaal's forces only between the adsorbent and adsorbate, which are non-specific

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(A) is true but (R) is false

Both (A) and (R) are true and (R) is the correct explanation of (A)

Both (A) and (R) are false

Both (A) and (R) are true and (R) is not the correct explanation of (A)

answer is A.

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Detailed Solution

Adsorption in which the molecules of the adsorbate and the adsorbent are attracted by weak van der Waals interactions is referred to as physical adsorption
It is multilayered, non-directional, and non-specific
By heating the adsorbate or lowering its pressure, the physisorption process can be easily reversed due to the weak forces of attraction Physisorption decreases with increase in temperature

Hence the correct option is A.

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