Winnowing is effective in separating husk from grains because the husk is lighter than the grains. In this method, the mixture of grains and husk is thrown into the air, and the wind blows away the lighter husk while the heavier grains fall straight down. This allows the grains to be collected separately from the husk. Winnowing is commonly used by farmers to clean grains after harvesting.
This question related to Chapter 9 Science Curiosity Class 6th NCERT.
From the Chapter 9. Methods of Separation in Everyday Life.
Give answer according to your understanding.
Because husk is lighter than grains and can be blown away.
Explanation: Air or wind helps in carrying the lighter husk, leaving the heavier grains behind.
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