Which one of the following is not a property of physical adsorption?

Which of the following parameters is $\text{correct}$ regarding the adsorption of gases over a solid?

The given graphs $I$,$II$,$III$,and $IV$ represent general trends observed for different physisorption and chemisorption processes under mild conditions of temperature and pressure. Which of the following choice$(s)$ about $I$,$II$,$III$,and $IV$ is (are) correct?
$(A)$ $I$ is physisorption and $II$ is chemisorption
$(B)$ $I$ is physisorption and $III$ is chemisorption
$(C)$ $IV$ is chemisorption and $II$ is chemisorption
$(D)$ $IV$ is chemisorption and $III$ is chemisorption

Adsorption of a gas on a solid adsorbent follows the Freundlich adsorption isotherm. If $x$ is the mass of the gas adsorbed on mass '$m$' of the adsorbent at pressure $p$, then from the given graph, the extent of adsorption is proportional to:

Identify the incorrect statement.

Why does physical adsorption decrease with an increase in temperature?