Explain what is observed when
(i) an electrolyte is added to ferric hydroxide sol.
(ii) an emulsion is subjected to centrifugation.
(iii) direct currect is passes through a colloidal sol.

Explain what is observed (a) When an electrolyte NaCl is added to ferric hydroxide sol. (b) When an emulsion is subjected to centrifugation. (c) When direct currect is passed through a colloidal sol. (d) When a beam of light is passes through a colloidal solution.

Explain what is observed when (i) KCl, an electrolyte, is added to hydrated ferric oxide sol, (ii) an electric current is passed through a colloidal solution, (iii) a beam of lights is passed through a colloidal solution.

Explain what is observed when : (i) a beam of light is passed through colloidal sol (ii) an electrolyte NaCa is added to ferric hydroxide sol (iii) electric current is passed through a colloidal sol ?