Which type of bond is involved in the phenomenon of physical adsorption?

Which of the following is zero during the process of adsorption?

Which of the following conditions is favorable for $Van \ der \ Waals$ adsorption?

Which of the following is not the application of adsorption?

In the figure,a straight line is given for the Freundlich Adsorption isotherm equation $(y = mx + c)$,where the equation is $y = 0.3x + 0.7033$. The values of $\frac{1}{n}$ and $\log K$ are respectively:

Noble gases are adsorbed by