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Which one of the following is NOT a colloidal solution with dispersed phase-liquid and dispersed medium-gas?

Which one of the following is NOT a colloidal solution with dispersed phase-liquid and dispersed medium-gas? Correct Answer Smoke

The correct answer is option i.e Smoke

Properties of a colloid-

  • A colloid is a heterogeneous mixture.
  • The size of particles of a colloid is too small to be individually seen by naked eyes.
  • Colloids are big enough to scatter a beam of light passing through it and make its path visible.
  • They do not settle down when left undisturbed, that is, a colloid is quite stable
  • They cannot be separated from the mixture by the process of filtration. But, a special technique of separation known as centrifugation, can be used to separate the colloidal particles.

Common Examples of colloids

Dispersed phase Dispersed medium Type Example
Liquid Gas Aerosol Fog, clouds, mist
Solid Gas Aerosol Smoke, automobile exhaust
Gas Liquid Foam Shaving cream
Liquid Liquid Emulsion Milk, face cream
Solid Liquid Sol Milk of magnesia, mud
Gas Solid Foam Foam, rubber, sponge, pumice
Liquid Solid Gel Jelly, cheese, butter
Solid Solid Solid Sol Colored gemstone, milky glass

 

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