$A$ plot of $\log \left( \frac{x}{m} \right)$ vs $\log \, P$ for the adsorption of a gas on a solid gives a straight line with slope equal to

The number of incorrect statement/s from the following is/are:
$A.$ Water vapours are adsorbed by anhydrous calcium chloride.
$B.$ There is a decrease in surface energy during adsorption.
$C.$ As the adsorption proceeds,$\Delta H$ becomes more and more negative.
$D.$ Adsorption is accompanied by decrease in entropy of the system.

Among the following,the number of curves not in accordance with the Freundlich adsorption isotherm is:

In the adsorption of acetic acid on activated charcoal,the acetic acid is an

Regarding the adsorption of a gas on the surface of a solid,which of the following is $NOT$ true?

The charge on $Fe(OH)_3$ sol is due to the adsorption of which of the following?