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Question

Differentiate between sedimentation and decantation.


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Solution

  • Sedimentation
  • Decantation
  • Settling down of insoluble particles or impurities at the bottom from the mixture is called sedimentation.
  • Decantation is pouring out of upper clear layer of liquid into another container to separate two immiscible liquids.
  • It involves two phases- one phase is solid and another is liquid phase.
  • It involves two phases- it may be solid-liquid phase or liquid liquid phase.
  • Sedimentation is followed independently to remove large sized insoluble impurities.
  • Decantation is followed by sedimentation.
  • Example: tea leaves settling down on cup of tea, soil settling in pond water etc.
  • Example: pouring of tea into another beaker when tea leaves got settled etc.

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