Question

The particle size in a colloidal solution is:

• A. 1 Å – 10 Å
• B. 10 Å – 2000 Å
• C. More than 2000 Å
• D. Less than 1 Å

Hint:

Colloidal solutions have particle sizes in the range of 10 Å to 2000 Å, which is why they exhibit the Tyndall effect.

Answer 1

The Correct Option is B

The particle size in a colloidal solution is between 10 Å and 2000 Å. This range is large enough for the particles to scatter light (Tyndall effect) but not so large that they settle out of the solution.