1.

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 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 iron pieces. Which of the following methods can separate X, Y and Z?

A. Winnowing, Magnetic separation
B. Magnetic separation, Winnowing
C. Sieving, Magnetic separation. Filtration
D. Handpicking, Sublimation, Sieving
Answer» B. Magnetic separation, Winnowing


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