Question
  1. How can a colloidal solution and true solution of the same colour be distinguished from each other?
  2. List four applications of adsorption.

Answer

  1. When light beam is passed through both the solutions, path of light becomes visible in a colloidal solution (due to scattering of light by colloidal particles).
  2. Four applications of adsorption are following-
  1. In chromatography for separation of mixtures.
  2. Adsorption of toxic gases by activated charcoal in gas masks.
  3. Decolourization of cane sugar by animal charcoal.
  4. In heterogeneous catalysis.

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