Fundamentholfundamenthol
JEE Main2019Chemistry
Q.

The correct option among the following is :

  1. A

    Colloidal medicines are more effective because they have small surface area. 

  2. B

    Colloidal particles in lyophobic sols can be precipitated by electrophoresis.

  3. C

    Brownian motion in colloidal solution is faster if the viscosity of the solution is very high.

  4. D

    Addition of alum to water makes it unfit for drinking. 

Solution

Electrophoresis is used to coagulate lyophobic colloids.

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