Question
The constituent substances of a colloid cannot be separated by oridinary filtration.

Answer

  1. A colloidal solution is heterogeneous.
  2. The diameters of colloidal particles are of the order of $10^{-5}$ m.
  3. The particles of a colloid can easily pass through a filter paper as the pore size of a filter paper is big. Hence, the constituents of a colloidal cannot be separated by filtration.

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