The charge on $As_2S_3$ sol is due to the adsorption of........

Which of the following is incorrect for physisorption?

Freundlich adsorption isotherms for the physical adsorption of a gas at temperatures $T_1$,$T_2$ and $T_3$ are shown in the graph given below. The correct relationship between $T_1$,$T_2$ and $T_3$ is:

Which of the following is true for spontaneous adsorption of $H_2$ gas without dissociation on a solid surface?

What is the difference between adsorbent and adsorbate?

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