In the adsorption of acetic acid on activated charcoal,the acetic acid is an

$A$ solid acts as an adsorbent because it has

$A$ particular adsorption process has the following characteristics: $(i)$ It arises due to van der Waals forces and $(ii)$ it is reversible. Identify the correct statement that describes the above adsorption process.

What is the effect of pressure on the extent of adsorption?

In a Freundlich adsorption isotherm,if the slope is unity and $k$ is $0.1$,the extent of adsorption at $2 \ atm$ is $(\log 2 = 0.30)$

At high pressure,the entire surface is covered by a unimolecular layer of gas,which follows ......... order.