Which of the following statements is not true?

Shown below are adsorption isotherms for a gas '$X$' at temperatures $T_1$,$T_2$,and $T_3$. Here,$p$ and $\frac{x}{m}$ represent pressure and the extent of adsorption,respectively. The correct order of temperatures for the given adsorption is:

The charge on colloidal particles is due to

Which of the following statements is incorrect?

Identify physisorption from the following.

The correct option$(s)$ related to adsorption processes is(are):
$A$. Chemisorption results in a unimolecular layer.
$B$. The enthalpy change during physisorption is in the range of $100$ to $140 \ kJ \ mol^{-1}$.
$C$. Chemisorption is an endothermic process.
$D$. Lowering the temperature favors physisorption processes.