Identify the statement(s) which is/are not correct with respect to the surface phenomenon. — Surface Chemistry Chemistry Question

💡 Solution & Explanation

If an emulsion is oil-in-water, adding an electrolyte will dissolve in the continuous water phase and *increase* the conductivity; thus, a decrease would imply a water-in-oil emulsion. Macromolecular colloids (like proteins or starch in water) are generally lyophilic, not lyophobic. Therefore, correct answer is A,C.