JEE Main 201910 AprilEvening Shift
- Exam
- JEE Main
- Year
- 2019
- Date
- 10 April
- Shift
- Evening Shift
- Subject
- Chemistry
- Chapter
- Surface Chemistry
JEE Main 2019 · 10 April · Evening Shift · Chemistry · Surface Chemistry
The correct option among the following is.
The correct option among the following is.
Options
- ABrownian motion in colloidal solution is faster if the viscosity of the solution is very high.
- BColloidal particles in lyophobic sols can be precipitated by electrophoresis.
- CColloidal medicines are more effective because they have small surface area.
- DAddition of alum to water makes it unfit for drinking.
Correct answer
B. Colloidal particles in lyophobic sols can be precipitated by electrophoresis.
Step-by-step solution
Brownian motion of colloidal particle depends on size of particles.
Colloidal medicines are better because of their large surface area.
Electrophoresis is used for ppt. of lyophobic colloid. In electrophoresis precipitation occurs at the electrode which is oppositely charged.
Colloidal medicines are better because of their large surface area.
Electrophoresis is used for ppt. of lyophobic colloid. In electrophoresis precipitation occurs at the electrode which is oppositely charged.