Question

The size of colloidal particles ranges between:

• A. ${10}^{-7}-{10}^{-9}\mathrm{cm}$
• B. ${10}^{-9}-{10}^{-11}\mathrm{cm}$
• C. ${10}^{-4}-{10}^{-7}\mathrm{cm}$
• D. ${10}^{-2}-{10}^{-3}\mathrm{cm}$

Answer 1

The correct option is C

${10}^{-4}-{10}^{-7}\mathrm{cm}$

Explanation for the correct answer:-

Option (C) ${10}^{-4}-{10}^{-7}\mathrm{cm}$

• Colloid is a heterogeneous mixture in which the minute particles of a particular substance are dispersed into another substance, which is called the dispersion medium.
• The minute particles have a diameter of 1 to 1000 nanometers but they still do not settle at the bottom of the mixture instead they remain suspended.
• Thye can be seen under an electron or optical microscope.
• Hence it is the correct option.

Therefore, The size of colloidal particles ranges between option (C) ${10}^{-4}-{10}^{-7}\mathrm{cm}$