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Separation of grains from chaff is the process called
  • a)
    Broadcasting
  • b)
    Threshing
  • c)
    Winnowing
  • d)
    separation
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Separation of grains from chaff is the process calleda)Broadcastingb)T...
The correct answer is option 'C' - Winnowing.
Winnowing is the process of separating the grains from the chaff, which is the inedible parts of the plant such as the straw, husks, and other debris that surrounds the grain. This process is typically done by using a combination of wind and gravity. The mixture of grain and chaff is thrown into the air, and the wind blows away the chaff, while the heavier grains fall back to the ground. This process is usually done by farmers to separate the grains from the chaff after threshing. This process is very ancient and still used in many countries today.
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Separation of Grains from Chaff - Winnowing


Winnowing is the process of separating grains from chaff. It is a traditional method that has been used for centuries to separate the heavier grains from the lighter chaff or husk. The process involves tossing the mixture of grains and chaff into the air and letting the wind carry away the lighter chaff while the heavier grains fall back to the ground.


Process of Winnowing

Winnowing can be carried out using the following steps:


  • Step 1: Threshing - Threshing is the process of separating the grains from the crop plant. It can be done by beating the crop plants with sticks or using a machine called a thresher. Threshing helps to loosen the grains from the plants and separate them from the chaff.

  • Step 2: Collecting the Mixture - Once the grains are separated from the crop plant, they are collected along with the chaff in a basket or a container.

  • Step 3: Winnowing - The collected mixture is then taken to an open space where the wind can blow freely. The mixture is poured from a height, allowing the wind to carry away the lighter chaff while the heavier grains fall back to the ground. This process is repeated multiple times to ensure thorough separation of grains from chaff.

  • Step 4: Collecting the Grains - After the winnowing process, the separated grains are collected separately, while the chaff is discarded.



Importance of Winnowing

Winnowing is an important process in agriculture as it helps in separating the edible grains from the non-edible chaff. It ensures that only the nutritious and usable grains are retained for consumption or further processing. By removing the chaff, winnowing improves the quality of the grains and makes them suitable for storage and consumption.


Advantages of Winnowing


  • Simple and cost-effective method

  • Does not require any specialized equipment

  • Can be done in rural areas without access to modern technology

  • Helps in obtaining clean and edible grains

  • Improves the quality of the grains



Overall, winnowing is a traditional and effective method for separating grains from chaff. It is widely used in agricultural practices to obtain clean and edible grains for consumption and storage.
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