Which of the following properties belongs to physical adsorption?

The graph between $\log (\frac{x}{m})$ and $\log P$ is provided for the adsorption of $NH_3$ gas on a metal surface. Calculate the weight of $NH_3$ gas adsorbed by $50 \ gm$ of the metal surface at $2 \ atm$ pressure. (in $gm$)

In the figure,a straight line is given for the Freundlich Adsorption isotherm equation $(y = mx + c)$,where the equation is $y = 0.3x + 0.7033$. The values of $\frac{1}{n}$ and $\log K$ are respectively:

Select the correct statement.

Among the following,the number of curves not in accordance with the Freundlich adsorption isotherm is:

The decomposition of gaseous $H_2$ adsorbed on a metal surface like tungsten is a reaction of which order?