Question

Which of the following is/are application(s) of colloids?

• A. Electrical precipitation of smoke
• B. Used in making medicines
• C. Cleaning action of soaps
• D. All of the above.

Answer 1

The correct option is D All of the above.

Applications of Colloids
1.Electrical precipitation of smoke:
Smoke is a colloidal solution of solid particles (Carbon, arsenic compounds, dust etc). Before the smoke comes out from chimney .It is made to loose charge and get precipitated

2. Medicines:Most of the medicines colloidal in nature. Colloidal medicines are more effective because they have large surface area

3. Cleaning action of soaps: Due to the formation of micelles