A mixture contains three different substances, $X, Y$ and $Z$ . They are of the same size, cubical in shape and yellow in colour.
$X$ particles are heavy, insoluble, non-magnetic and contribute $50 %$ of the mixture.
$Y$ particles are very light, insoluble, non-magnetic and contribute $40 %$ of the mixture.
And $Z$ particles are iron pieces.
Which of the following methods can separate $X, Y$ and $Z$ ?

Winnowing, Magnetic separation

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Magnetic separation, Handpicking

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Sieving, Filtration

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Handpicking , Sublimation

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Solution

The correct option is A
Winnowing, Magnetic separation

The separation of the components will involve a combination of methods. As mentioned $Y$ particles are very light so can be separated by winnowing, while $Z$ particles are iron pieces they are magnetic in nature and hence, can be separated by magnetic separation leaving behind $X$ which are heavier than $Y$ .

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