Question

The diameter of colloidal particles is between _______ and ___________ m.

• A. 10^-6
• B. 10^-9

Answer 1

Colloids: A colloid is a heterogeneous mixture in which the size of the particles is so small that the particles cannot be seen with the naked eye.

• The diameter of the particles of colloids lies in the range of 10^-6 and 10^-9 m.
• These particles can scatter a beam of light passing through them and makes the path of light visible. This is known as Tyndall effect.
• Examples of colloids: Milk, mist etc.

Therefore, the diameter of colloidal particles is between 10^-6 and 10^-9 m.