The following graph is obtained for physisorption of a gas as a function of pressure at different temperatures. The correct order of the temperatures is:

$10 \ g$ of a gas is adsorbed on $500 \ g$ of solid at $10 \ bar$. If the pressure is increased to $20 \ bar$, $14 \ g$ of the gas is adsorbed by the same solid at the same temperature. What is the slope of Freundlich adsorption isotherm?

The surface area of $1 \, g$ of activated charcoal is $1000 \, m^2$. Assuming complete coverage and unimolecular adsorption,if the radius of an ammonia molecule is $10^{-8} \, cm$,then the volume of ammonia adsorbed at $STP$ on $44/7 \, g$ of carbon will be ........ $L$. $(N_A = 6 \times 10^{23})$

$3.12 \, g$ of oxygen is adsorbed on $1.2 \, g$ of platinum metal. The volume of oxygen adsorbed per gram of the adsorbent at $1 \, atm$ and $300 \, K$ in $L$ is ..... .
$[R = 0.0821 \, L \, atm \, K^{-1} \, mol^{-1}]$

Which statement is true for Column Chromatography?

Which of the following is not a point of difference between physisorption and chemisorption?