A mixture contains three different particles X, Y and Z. Characteristics of X, Y and Z are given below:
$\begin{matrix} X & Y & Z Very heavy particles & Heavy particles & Very light particles Non-magnetic & Magnetic & Non-magnetic \end{matrix}$ Which among the combination of methods should be used in order to obtain particles X from the given mixture?

Magnetic separation, Handpicking

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Winnowing, Magnetic separation

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Sieving, Magnetic separation, Filtration

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Handpicking , Sublimation, Sieving.

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Solution

The correct option is B
Winnowing, Magnetic separation

Particles Y being magnetic in nature, can be separated by magnetic separation leaving behind X and Z. Magnetic separation is a process in which magnetic particles are separated out from a mixture using a magnet.

Very light Z particles can be separated from X by winnowing. It is the method in which heavier components of the mixture are separated from the lighter substances with the help of wind. Hence, leaving behind particles X.

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