What is used to adsorb the poisonous gas obtained from the coal mine?

If $x$ is the amount of adsorbate and $m$ is the amount of adsorbent,which of the following relations is not related to the adsorption process?

The graph drawn between $\log \left(\frac{x}{m}\right)$ and $\log (p)$ is shown below with intercept $OA = 0.3010$. What is the value of $\left(\frac{x}{m}\right)$ at a pressure of $0.3 \ atm$ ? (Given: $\log 2 = 0.3010, \log 3 = 0.477$)

Which gas will be adsorbed on a solid to a greater extent?

Which inert gas is used in chromatography?

$10 \ g$ of a gas is adsorbed on $500 \ g$ of solid at $10 \ bar$. If the pressure is increased to $20 \ bar$, $14 \ g$ of the gas is adsorbed by the same solid at the same temperature. What is the slope of Freundlich adsorption isotherm?