Which of the following statements is $NOT$ applicable to chemisorption?

Which of the following statements is incorrect for physical adsorption?

Which of the following is $NOT$ a characteristic of chemisorption?

In the adsorption of a gas on a solid,the Freundlich isotherm is obeyed. If the slope of the plot of $\log(\frac{x}{m})$ versus $\log(p)$ is zero,then the extent of adsorption is:

What is adsorption,adsorbate,adsorbent and desorption? Explain with appropriate examples.

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: