The froth flotation process is used for the concentration of sulphide ores and:

The rate of physical adsorption increases with......

$3 \, g$ of activated charcoal was added to $50 \, mL$ of acetic acid solution $(0.06 \, N)$ in a flask. After an hour,it was filtered and the strength of the filtrate was found to be $0.042 \, N$. The amount of acetic acid adsorbed (per gram of charcoal) is: .............. $mg$

Adsorption of a gas on solids follows Freundlich adsorption isotherm. The graph drawn between $\log \frac{x}{m}$ (on y-axis) and $\log p$ (on x-axis) is a straight line with slope equal to $3$ and intercept equal to $0.30$. What is the value of $\frac{x}{m}$ at a pressure of $2 \ atm$?
(Given; $\log 2 = 0.3$ )

What is the value of the slope in the Freundlich adsorption isotherm plot of $\log \frac{x}{m}$ against $\log C$?

Which one of the following is not applicable to chemisorption?