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Q.

Is it true that handpicking is a method to separate non-useful material by hand?


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a

True

b

False  

answer is A.

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Detailed Solution

The above statement is true.
There are several methods of separation. The method of separation depends upon the nature and the property of constituent substances present in the mixture. Handpicking is a method used to separate useful substances from undesired ones by hand. It is used to separate undesirable substances such as small pieces of stones from wheat, rice, pulses, etc. 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.
 
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