Question

Milk is an emulsion.

• A. True
• B. False

Answer 1

The correct option is A True

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.

• Therefore, it only appears homogeneous but actually it is heterogeneous as the composition is not uniform throughout.
• The diameter of the particles of colloids lies in the range of ${10}^{-6}-{10}^{-9}\mathrm{m}$.
• These particles can scatter a beam of light passing through them and make the path of light visible. This is known as the Tyndall effect.
• Examples of colloids: Milk, mist, etc.

Emulsion: A type of colloid in which the dispersed phase is a liquid and the dispersion medium is also a liquid.

• Examples: Milk, face cream, etc.

Dispersed phase: The phase which consists of the colloidal particles present in a smaller quantity. In milk, liquid fat globules are the dispersed phase.

Dispersion medium: The phase in which the particles are dispersed and are present in a larger quantity. In milk, water is the dispersion medium.

Hence, the given statement is true.