Question

The colloidal dispersion of a liquid in gas is called ________.

Answer 1

Aerosol: A type of colloid in which the dispersed phase can be a liquid or solid and the dispersion medium is gas.

• Liquid in gas type of aerosol: Aerosol in which dispersed phase is liquid and the dispersion medium is gas. Example: Fog, mist etc.
• Solid in gas type of aerosol or solid aerosol: Aerosol in which dispersed phase is solid and the dispersion medium is gas. Example: Dust-storm, smoke etc.

Dispersed phase: The phase which consists of the colloidal particles and present in the smaller quantity.

Dispersion medium: The phase in which the particles are dispersed and is present in the larger quantity.

Therefore, the colloidal dispersion of a liquid in gas is called aerosol.