A very large quantity of mixture contains tiny particles of three different substances X, Y, and Z. They are of the same size, cubical in. shape and yellow in color. X particles are very 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 actually iron pieces. Which of the following methods can separate X, Y, and Z in the fastest manner?

Winnowing-Magnetic separation

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Magnetic separation-Winnowing

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Sieving-Magnetic separation Filtration

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Handpicking - Sublimation-Sieving

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Solution

The correct option is A Winnowing-Magnetic separation
By Winnowing process heavy particles can be easily separated by blowing off the lighter particles with the help of air. Here Y is light and gets separated by winnowing. Then X and Z can be separated by the magnetic separation method because Z is magnetic.

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