When the temperature is lowered and pressure is raised,the adsorption of a gas on a solid

Physical adsorption is essentially quite appreciable:

The correct statement regarding chemisorption is

For Freundlich adsorption isotherm,a graph of $\log (x / m)$ vs $\log (p)$ gives a straight line. The slope of the line and its $Y$-axis intercept respectively are

Which of the following statements is $NOT$ correct regarding the adsorption of a gas on a solid surface?

Which of the following statements is true regarding chemisorption?