In separating stones, the need for handpicking them from rice is :

To add impurities

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To clean the rice

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To remove impurities

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To get useful components

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Solution

The correct option is C
To remove impurities

After handpicking stones from rice, the stone is not used in any way.They are impurities.

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Similar questions

The need for handpicking stones from rice is to remove the unwanted impurities.

Separation process	The purpose for which we do the separation	What do we do with the separated components?
(1) Separate stones from rice.	(a) To separate two different but useful components.	(i) We throw away the solid component.
(2) Churning milk to obtain butter.	(b) To remove non-useful components.	(ii) We threw away the impurities.
(3) Separate tea leaves	(c) To remove impurities or harmful components.	(iii) We use both components.

Why do we separate substances present in a mixture?
i) To separate wanted components from unwanted components.
ii) To remove impurities.

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