When temperature is increased,what happens to the extent of adsorption in physisorption?

At high pressure,the entire surface is covered by a unimolecular layer of gas,which follows ......... order.

Which of the following is not a point of difference between physisorption and chemisorption?

Adsorption is multilayer in the case of

Amongst the following statements regarding adsorption,those that are valid are :
$(a)$ $\Delta H$ becomes less negative as adsorption proceeds.
$(b)$ On a given adsorbent,ammonia is adsorbed more than nitrogen gas.
$(c)$ On adsorption,the residual force acting along the surface of the adsorbent increases.
$(d)$ With increase in temperature,the equilibrium concentration of adsorbate increases.

Given below are two statements.
Statement-$I$: Easily liquefiable gases are readily adsorbed.
Statement-$II$: Adsorption enthalpy for physisorption is less compared to adsorption enthalpy for chemisorption.
The correct answer is