Gold sol is not a

Aqueous solution of raw sugar when passed over beds of animal charcoal, it becomes colourless. Pick the correct set of terminologies that can be used for the above example.

For Freundlich adsorption isotherm, a graph of $$\log (x / m)$$ vs $$\log (p)$$ gives a straight line. The slope of line and its $$Y$$-axis intercept respectively are

Colloidal solution commonly used in the treatment of skin disease is