How does chemisorption change with an increase in temperature?

The plot that best represents the relationship between the extent of adsorption $(x / m)$ and pressure $(p)$ is

$3.12 \, g$ 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 ..... .
$[R = 0.0821 \, L \, atm \, K^{-1} \, mol^{-1}]$

Adsorption increases when:

Which of the following gases is readily adsorbed by solid adsorbent?

Which one of the following statements is not correct?