3
Question
How can we separate a mixture of kerosene and water? Explain with a diagram. [3 MARKS]
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Solution
Explanation: 2 Marks
Figure: 1 Mark
(i) Take a separating funnel. After setting up the separating funnel, pour the kerosene oil and water mixture in it.
(ii) Let it stand undisturbed for some time. Soon two distinct and separate layers of oil and water will be seen.
(iii) Next, open the stopcock of this separating funnel. The aim is to drain out the water slowly which has collected at the base of the funnel.
(iv) Close the stopcock of this separating funnel as soon as the level of oil reaches the stopcock.
Figure: 1 Mark
(i) Take a separating funnel. After setting up the separating funnel, pour the kerosene oil and water mixture in it.
(ii) Let it stand undisturbed for some time. Soon two distinct and separate layers of oil and water will be seen.
(iii) Next, open the stopcock of this separating funnel. The aim is to drain out the water slowly which has collected at the base of the funnel.
(iv) Close the stopcock of this separating funnel as soon as the level of oil reaches the stopcock.
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