Question

in which cases handpicking is enough as a method of separation​

Answer 1

Answer:

separation of small stones from grains

Answer 2

Explanation:

HANDPICKING:

In our daily lives we come across so many situations in which we have to separate some substances from a mixture in order to get a suitable substance for use. Some of the substances are easily separable just by taking out the impurities with hand. This method of separation is known as handpicking. But some of them cannot be removed by hand and we need some other methods of separation for such mixtures.

Handpicking : A Separation Technique

For example: In our house, our mother separates stones and insects from rice simply by hand. But in case of tea and tea leaves, the method of handpicking is not sufficient for the separation and a filter is required. Thus we can say that there are different methods to separate different mixtures depending upon the constituents of the mixture and the final product required. Some of these methods are carried out in dry conditions while some of them are carried in wet conditions.

The method in which substances in a mixture can be separated by just picking them out with the help of hand from the mixture is known as handpicking method. It is one of the various methods which are carried out in dry conditions. The substances which are separated with the help of this method can be useful product or the impurities which need to be removed or both the substances which are separated can be useful products. This method is useful only when the substance which needs to be separated is in small quantity

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