NTA Abhyas 2020
- Exam
- NTA Abhyas
- Year
- 2020
- Subject
- Chemistry
- Chapter
- Surface Chemistry
NTA Abhyas 2020 · Chemistry · Surface Chemistry
The correct option among the following is
The correct option among the following is
Options
- ACollodial particles in lyophobic sols can be precipitated by electrophoresis
- BBrownian motion in collodial solution is faster if the viscosity of the solution is very high.
- CCollodial medicines are more effective because they have small surface area
- DAddition of alum to water makes it unfit for drinking.
Correct answer
A. Collodial particles in lyophobic sols can be precipitated by electrophoresis
Step-by-step solution
Lyophilic colloids may migrate in either direction (or) may not migrate at all where as lyophobic particles migrate in only one direction in electric field.
Brownian movement is faster if viscosity of medium is low.
Colloidal medicines are more effective due to more surface area.
Addition of alum removes impurities from water due to coagulation.
Brownian movement is faster if viscosity of medium is low.
Colloidal medicines are more effective due to more surface area.
Addition of alum removes impurities from water due to coagulation.