Find the temperature from the following graph at which the highest amount of a gas is adsorbed. (in $K$)

What is the number of molecular layers on the adsorbent in chemical adsorption?

Which of the following is not a point of difference between physisorption and chemisorption?

Which of the following orders is correct?

Assertion : The relation $\frac{x}{m} = k \cdot p^{1/n}$ is known as Freundlich adsorption isotherm,where $x$ is the mass of gas adsorbed by $m$ grams of adsorbent,$p$ is the equilibrium pressure,$k$ and $n$ are constants for a given system and temperature.
Reason : When several substances have the same value of $\frac{1}{n}$,the lines by which their adsorption isotherms can be represented will meet at a point.

Give an explanation of the applications of adsorption.