ChemistryEasy63×since 2002Q2240The correct option among the following is :AAddition of alum to water makes it unfit for drinking.BColloidal medicines are more effective because they have small surface area.CColloidal paraticles in lyophobic sols can be precipitated by electrophoresis.DBrownian motion in colloidal solution is faster if the viscosity of the solution is very high.Check answerSkip