On increasing which of the following factors, decreases the extent of physisorption? Surface area of the adsorbent Critical temperature of the adsorbate Concentration of adsorbate Temperature at which adsorption is carried out

On increasing temperature at which adsorption is carried out decreases the extent of physisorption.

Explanation:

An adsorption where molecules of the adsorbate are placed or held on the surface of adsorbent by Vander waals forces is called physisorption.

There is basically physical bonding between the molecules of gas to the surface of a solid or liquid.

Physisorption is reversible in nature and occurs at low temperatures.

It is not specific in nature which means that all gases are adsorbed on the surface of every solid substance to some extent.

Thus, we can conclude that on increasing temperature at which adsorption is carried out decreases the extent of physisorption.

i believe you are right for all except the 3rd ( look at sqdancefan his answer is much better)

i don,t know so just answer mine