Which of the following methods of separation would be most appropriate to separate some vegetables such as french beans, lady’s finger, green chillies, brinjals, and potatoes all mixed in a bag?

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Winnowing

Sieving

Threshing

Handpicking

answer is D.

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Detailed Solution

Handpicking is a method used to separate useful substances from undesired ones by hand.
This method is useful in separating larger-sized impurities or substances which are easily visible to the naked eye. It can be used to separate those mixtures which differ in colour, shape or weight. The vegetables differ in shape, size, colour and weight, hence can be separated using handpicking. Sieving is used to separate bigger particles from smaller ones and using a sieve. The particle size considered is usually small in this case. Threshing involves the separation of seeds and grains by using mechanical means.

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