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Question

A mixture of wheat and husk can be separated by
(a) hand-picking
(b) sieving
(c) threshing
(d) winnowing


Solution

(c) winnowing
Farmers use this method to separate grain (here wheat) from husk. The mixture of grain and husk are dropped from a height. The heavier grain particles falls straight down while the lighter husk particles are taken away by wind and collected separately at a short distance.

Science
Everyday Science
Standard VI

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