You are given a mixture of water, groundnut oil and common salt. How will you separate groundnut oil and common salt from it?
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The mixture of water, groundnut oil and common salt is put in a separating funnel and allowed to stand for some time. The mixture separates into two layers according to the densities of water and groundnut oil. Water is heavier than groundnut oil. So, water forms lower layer while groundnut oil forms upper layer. On opening the stop clock of separating funnel, the lower layer of water comes out first and collected in beaker leaving behind groundnut oil in the funnel. Now, solution of water and common salt is heated. Water gets evaporated leaving behind solid common salt.
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