Question -
Answer -
We carry out the separation of substances for the following purposes:
(a) To remove the un useful or harmful component : For example, removing tea leaves after making tea.
(b) To obtain the useful component : For example, getting wheat, rice grains after separating husk, dirt, etc.
(c) To remove impurities for getting a pure sample : For example, obtaining sugar crystals from jaggery (gur) or salt from sea water.