impurities like stone can be removed in rice by hand picking but not by threshing? reason why
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Answer:
because I stone can easily seen and can be picked by hand so they uses hand picking method
Explanation:
And also threshing for separation of grains or rice from stalk
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Explanation:
husk is lighter than rice or wheat so it's removed by the process of threshing but the weight of stone is more or equal to the weight of rice so it can not be separated by threshing,so the process of hand picking is used to remove stones from rice.
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