Which of the following gases is adsorbed to the maximum extent by activated charcoal?

In an adsorption experiment, a graph between $\log (x/m)$ vs $\log P$ was found to be linear with a slope of $45^{\circ}$. The intercept on the $\log (x/m)$ axis was found to be $0.3$. The amount of the gas adsorbed per gram of charcoal under a pressure of $1 \ atm$ is:

What is the role of adsorption in the froth floatation process used especially for the concentration of sulphide ores?

$2.0 \ g$ of activated charcoal is added to $100 \ mL$ of $0.5 \ M$ acetic acid (molar mass $60 \ g \ mol^{-1}$),shaken well and filtered. The concentration of the solution is reduced to $0.4 \ M$. How many grams of acetic acid is adsorbed on charcoal per gram?

Write any two characteristics of Chemisorption.

Identify the incorrect statement.