The force of attraction present in physical adsorption is ....

During the adsorption of a gas on a solid at low temperature,which of the following thermodynamic conditions is correct?

The charcoal maintained at $100 \ K$ absorbs

Which of the following is incorrect for physisorption?

On which factors does the amount of adsorption depend?

Adsorption of a gas on an adsorbent follows Freundlich adsorption isotherm. The slope and intercept (on $y$-axis) of the isotherm are $0.5$ and $1.0$ respectively. What is the value of $\frac{x}{m}$, when the pressure of the gas $(p)$ is $100 \ atm$?