Question

The diameter of colloidal particles range from :

• A. ${10}^{-6}m$ to ${10}^{-9}m$
• B. ${10}^{-9}m$ to ${10}^{-12}m$
• C. ${10}^{3}m$ to ${10}^{-3}m$
• D. ${10}^{-3}m$ to ${10}^{-6}m$

Answer 1

The correct option is A ${10}^{-6}m$ to ${10}^{-9}m$

Colloidal particles are microscopic solid particles which are suspended in fluids.

It's diameter ranges from ${10}^{-}$${}^6$m to ${10}^{-}$${}^9$m. If we consider in nanometer, then the size is about 1 nanometer in diameter.

Hence the correct option is A.