Which of the plots is adsorption isobar for chemisorption?

The critical temperatures of gases $A, B, C,$ and $D$ are $190 \ K, 630 \ K, 261 \ K,$ and $400 \ K$ respectively. The quantity of gas adsorbed per gram of charcoal at the same pressure is least for the gas:

In an adsorption experiment,a graph between $\log (x/m)$ versus $\log P$ was found to be linear with a slope of $45^\circ$. The intercept on $\log (x/m)$ axis was found to be $0.3010$. The amount of gas adsorbed per gram of charcoal under a pressure of $0.5 \ atm$ is (in $g$)

Adsorption of a gas on an adsorbent follows Freundlich adsorption isotherm. The slope and intercept (on $y$-axis) of the isotherm are $0.5$ and $1.0$ respectively. What is the value of $\frac{x}{m}$, when the pressure of the gas $(p)$ is $100 \ atm$?

Which of the following statements is incorrect?

The plot of $\log(\frac{x}{m})$ against $\log P$ is a straight line inclined at an angle of $45^{\circ}$. When the pressure is $0.5 \ atm$ and the Freundlich parameter $(K)$ is $10$,the amount of solute adsorbed per gram of adsorbent will be $(\log 5 = 0.699)$ .......... $g$.