Which of the following properties belongs to physical adsorption?

The statement not applicable to chemisorption is

The graph given below shows the relationship between the extent of adsorption $(x / m)$ and pressure at different temperatures. The correct order of temperatures for curves $i$, $ii$, and $iii$ is:

When $200 \, mL$ of $0.2 \, M$ acetic acid is shaken with $0.6 \, g$ of wood charcoal,the final concentration of acetic acid after adsorption is $0.1 \, M$. The mass of acetic acid adsorbed per gram of carbon is $...... \, g$.

The equation for Freundlich adsorption isotherm is

What is the value of the slope in the Freundlich adsorption isotherm plot of $\log \frac{x}{m}$ against $\log C$?