For the adsorption of a gas on a solid,the slope of the linear plot of $\log(x/m)$ versus $\log(p)$ is .... ($n$ is an integer).

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

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.

Wood charcoal is used to decolourise sugar because it

Which of the following gas molecules has the maximum value of enthalpy of physisorption?

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