The colloidal sol of $SnCl_4$ prefers the adsorption of which ion in the presence of excess $HCl$?

Sorption is a phenomenon where:

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.

Which type of adsorption leads to the formation of a multimolecular layer?

Why are powdered substances more effective adsorbents than their crystalline forms?

Which of the following statements is incorrect?