Adsorption of gases on a solid surface is generally exothermic because

In a plot of $\log \left( \frac{x}{m} \right)$ $vs$ $\log p$,for the adsorption of a gas on a solid,a straight line is obtained. The slope of that straight line is

$10 \ g$ 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?

When $H_2S$ gas is passed through an arsenious oxide solution,an arsenious sulphide sol is formed. The charge on the particles is due to the adsorption of .......

The correct order of the volume of $NH_3, CO_2$,and $H_2$ gases adsorbed on $1 \ g$ of charcoal at $300 \ K$ is:

The correct option representing a Freundlich adsorption isotherm is