Adsorption is multilayer in the case of

Adsorption of a gas on solids follows Freundlich adsorption isotherm. The graph drawn between $\log \frac{x}{m}$ (on y-axis) and $\log p$ (on x-axis) is a straight line with slope equal to $3$ and intercept equal to $0.30$. What is the value of $\frac{x}{m}$ at a pressure of $2 \ atm$?
(Given; $\log 2 = 0.3$ )

Which of the following forces is responsible for physisorption?

Which of the following gases will be adsorbed to a greater extent on the surface of charcoal?

Which of the following is not a characteristic of chemisorption?

The plot that best represents the relationship between the extent of adsorption $(x / m)$ and pressure $(p)$ is