Answer :

  • When we place a few crystals of potassium permanganate in a beaker containing water, we get two layers:
  • Colourless water at the top and pink colour at the bottom.
    After a few minutes, a light pink colour spreads and the entire solution turns pink due to diffusion.
  • As potassium permanganate is a solid substance, it does not possess so much space.
  • Water molecules due to a liquid state, collide with solid particles and intermix due to sufficient space between molecules.

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