Give one word or phrase for the following.
1. A method of separating unwanted solid impurities from useful solids by hand?
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Answer:
hand picking is the answer
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Hand-picking is a method of separation by which impurities that are different from the useful material in a mixture are hand-picked and removed. For example, rice, wheat, pulses, etc., contain impurities such as small stones or unwanted grains.
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