Noble gases are adsorbed on

$0.2 \ g$ 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?

Adsorption is multilayer in the case of

The decomposition of gaseous $H_2$ adsorbed on a metal surface like tungsten is a reaction of which order?

Which of the following orders is correct?

What type of the graph $\log(x/m)$ vs $\log P$ is obtained for the Freundlich adsorption isotherm?