1. Why do we need to separate different components of a mixture? Give two examples.

Answers (1)

We see that, before we use a substance, we need to separate harmful or useless substances that may be mixed with it. Sometimes, we separate even useful components if we need to use them separately. For examples: 

(a)The process that is used to separate grain from stalks etc. is threshing.

(b)Sieving allows the fine flour particles to pass through the holes of the sieve while the bigger impurities remain on the sieve.

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