Which of following is an aerosol?

This question was previously asked in
HP TGT (Medical) TET 2017 Official Paper
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  1. Smoke
  2. Milk
  3. Cheese
  4. Butter

Answer (Detailed Solution Below)

Option 1 : Smoke
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HP JBT TET 2021 Official Paper
150 Qs. 150 Marks 150 Mins

Detailed Solution

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A colloid is a mixture in which one substance of microscopically dispersed insoluble particles are suspended throughout another substance.

  • Dispersed phase: The phase that is scattered or present in the form of colloidal particles is known as dispersed phase.
  • Dispersion medium: The medium in which the colloidal particles are dispersed is called dispersion medium.

Key Points

Classification of colloids: 

Dispersed Phase Dispersed Medium Name Examples
Solid Solid Solid-sol Ruby glass, alloys
Solid Liquid Sol Paint, ink
Solid Gas Aerosol Smoke, haze
Liquid Solid Gel Curd, cheese, Butter
Liquid Liquid Emulsion Milk, Cream
Liquid Gas Liquid Aerosol Cloud, Mist
Gas Solid Solid Foam Cork, pumice stone
Gas Liquid Foam Froths of air


Hence we can conclude that 'Smoke' is an example of Aerosol.

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