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What is this process called when the mixture in the mixture settles down after adding it to the water?
1. Sieving
2. Threshing
3. Yarning
4. Sedimentation

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Correct Answer - Option 4 : Sedimentation

The correct answer is Sedimentation.

  • When the heavier component in a mixture settles after water is added to it, the process is called sedimentation.
  • When the water (along with the dust) is removed, the process is called decantation.

  •  Sieving:
    • ​Sieving allows the fine flour particles to pass through the sieve holes while the bigger impurities remain on the sieve.
    • In a flour mill, impurities like husk and stones are removed from wheat before grinding it.
    • The sieving removes pieces of stones, stalk and husk that may remain with wheat after threshing and winnowing.
  • Threshing:
    • ​The process that is used to separate the grain from stalks etc., is threshing.
    • In this process, the stalks are beaten to free the grain seeds.
    • Sometimes, threshing is done with the help of bullocks.
    • Machines are also used for threshing large quantities of grain.

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