$2.0 \, g$ of $H_2$ gas is adsorbed on $2.5 \, g$ of platinum powder at $300 \, K$ and $1 \, bar$ pressure. The volume of the gas adsorbed per gram of the adsorbent is $..... \, mL$.
(Given: $R = 0.083 \, L \, bar \, K^{-1} \, mol^{-1}$)

Which of the following gases is adsorbed to a greater extent if the adsorbent remains the same under similar conditions of temperature and pressure?

$CO_{2}$ gas adsorbs on charcoal following Freundlich adsorption isotherm. For a given amount of charcoal,the mass of $CO_{2}$ adsorbed becomes $64$ times when the pressure of $CO_{2}$ is doubled. The value of $n$ in the Freundlich isotherm equation is $......\,\times 10^{-2}$. (Round off to the Nearest Integer)

The number of statement/s which are the characteristics of physisorption is
$A.$ It is highly specific in nature
$B.$ Enthalpy of adsorption is high
$C.$ It decreases with increase in temperature
$D.$ It results into unimolecular layer
$E.$ No activation energy is needed

The adsorption of a gas at the boiling point of the gas follows the isotherm shown in the figure. Identify the correct thermodynamic properties at point $C$.

Which statement is true for Column Chromatography?