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:

For Freundlich adsorption isotherm,a plot of $\log (x / m)$ ($y$-axis) and $\log p$ ($x$-axis) gives a straight line. The intercept and slope for the line is $0.4771$ and $2,$ respectively. The mass of gas,adsorbed per gram of adsorbent if the initial pressure is $0.04 \ atm,$ is $........\times 10^{-4} \ g$.
$(\log 3 = 0.4771)$

If $x$ amount of gas is adsorbed on $m$ amount of adsorbent at pressure $p$,the Freundlich adsorption isotherm plot gives a straight line for which of the following?

For the adsorption of a gas on a solid,the slope of the linear plot of $\log(x/m)$ versus $\log(p)$ is .... ($n$ is an integer).

The curve that best describes the adsorption of a gas $(x \, g)$ on $1.0 \, g$ of a solid substrate as a function of pressure $(p)$ at a fixed temperature is

Froth flotation process for the concentration of ores is an illustration of the practical application of