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The given table shows some properties of three substances P, Q and R :

The following steps were carried out to obtain P from a mixture of P, Q

and R

1) Filtration 2) Evaporation

3) Magnetic separation 4) Addition of water

The sequence in which these steps should be carried out is

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3, 4, 1, 2

4, 3, 2, 1

4, 1, 2, 3

3, 4, 2, 1

answer is C.

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Detailed Solution

Substance P is water soluble

Substance Q is attracted by magnet

Substance R is non magnetic and insoluble in water

So, sequentially first with magnetic separation we can separate Q, then with addition of water by following filtration we can separate R. By evaporation we can separate, which is soluble in water.

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