Animal charcoal is used in decolourising liquids because it is a good

The adsorption of a gas on a solid surface follows the Freundlich adsorption isotherm. At $T(K)$,the gas pressure is $2 \ atm$. What is the value of $\frac{x}{m}$? (Given: $n=2$ and $k=$ constant)

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

Acetic acid adsorbed on activated charcoal is . . . . .

Why does physisorption decrease with the increase of temperature?

The adsorbent used in adsorption chromatography is/are:
$A$. silica gel
$B$. alumina
$C$. quick lime
$D$. magnesia
Choose the most appropriate answer from the options given below: