Which of the following mixture can be separated by the winnowing method?

Correct option is A

The correct answer is Mixture of grain and husk.
Winnowing:
· Winnowing is used to separate heavier and lighter components of a mixture by wind or by blowing air.
· This method is commonly used by farmers to separate lighter husk particles from heavier seeds of grain.
· The husk particles from the grain are carried away by the wind or by blowing air.
· The seeds of grain get separated and form a heap near the platform for winnowing.
· The separated husk is used for many purposes, such as fodder for cattle.
Information Booster Separation of substances
· Substances are separated from the mixture in the process of removing impurities or obtaining useful substances out of the mixture.
· Some common examples of separations include the separation of salt from seawater, butter from milk, grain from stalks, etc.
· Different methods of separations are handpicking, threshing, winnowing, and sieving.
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Handpicking:
· The method of handpicking is used to separate undesirable substances, such as small pieces of stones from wheat and rice.
· The quantity of such impurities is usually not very large.
· In such situations, we find that handpicking is a convenient method of separating substances.
· Some common examples are the separation of pebbles from grain, and the separation of pebbles from wet sand, etc.
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 to thresh large quantities of grain.
Sieving:
· Sieving allows the fine flour particles to pass through the holes of the sieve while the bigger impurities remain on the sieve.
· In a flour mill, impurities like husk and stones are removed from wheat before grinding it.
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