$0.2 \ g$ of fine animal charcoal is mixed with half litre of acetic acid solution and shaken for $30 \ minutes$. What happens to the concentration of the acetic acid solution?

Give a reason why a finely divided substance is more effective as an adsorbent.

Which one of the following characteristics is not correct for physical adsorption?

For a gas-solid adsorbent system,the adsorption isotherm $\frac{x}{m}=k p^{1/n}$ is applicable,where $n=5$ in the specified case. Point out the correct statement:

The graph of $\log \frac{x}{m}$ vs $\log p$ for an adsorption process is a straight line inclined at an angle of $45^{\circ}$ with an intercept equal to $0.6020$. The mass of gas adsorbed per unit mass of adsorbent at the pressure of $0.4 \ atm$ is $......... \times 10^{-1}$ (Nearest integer). Given: $\log 2 = 0.3010$.

Which of the following curves is in accordance with the Freundlich adsorption isotherm?