$A$ plot of $\log (x/m)$ versus $\log p$ for the adsorption of a gas on a solid gives a straight line with slope equal to

$0.2 \ g$ of fine animal charcoal is mixed with half litre of acetic acid solution and shaken for $30 \ minutes$. What happens to the concentration of the acetic acid solution?

Identify the incorrect statement.

Animal charcoal is used in decolourising liquids because it is a good

The correct statement$(s)$ pertaining to the adsorption of a gas on a solid surface is (are):
$(A)$ Adsorption is always exothermic.
$(B)$ Physisorption may transform into chemisorption at high temperature.
$(C)$ Physisorption increases with increasing temperature but chemisorption decreases with increasing temperature.
$(D)$ Chemisorption is more exothermic than physisorption,however it is very slow due to higher energy of activation.

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