How many layers are adsorbed in chemical adsorption (chemisorption)?

For Freundlich adsorption isotherm,a plot of $\log (x / m)$ ($y$-axis) and $\log p$ ($x$-axis) gives a straight line. The intercept and slope for the line is $0.4771$ and $2,$ respectively. The mass of gas,adsorbed per gram of adsorbent if the initial pressure is $0.04 \ atm,$ is $........\times 10^{-4} \ g$.
$(\log 3 = 0.4771)$

Identify the $FALSE$ statement regarding adsorption from the following.

Adsorption is multilayer in case of

Which of the following is not a characteristic of chemisorption?

What is the difference between adsorbent and adsorbate?