Column - I Column - II
X. Magnetic separation A. $A g_{2} S$
Y. Forth Flotation B. $F e C r_{2} O_{4}$
Z. Gravity separation C. $A l_{2} (S i O_{3})_{3}$
Match the method of concentration of the ore in column I with the ore in column II and select the correct alternate :

X - A, Y - B, Z - C

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X - B, Y - A, Z - C

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X - C, Y - A, Z - B

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X - B, Y - C, Z - A

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Solution

The correct option is C $X - B, Y - A, Z - C$
$X :$ The magnetic separation is used when either the ore or the impurities are magnetic in nature. This method is used for the concentration of $F e C r_{2} O_{4}$ .
$Y :$ Froth floatation process is suitable for sulfide ores. It is based on the difference in wetting properties of the ore and gangue with water and oil. This method is used for the concentration of $A g_{2} S$ .
$Z :$ Gravity separation is based on the difference in densities of the ore particles and impurities. This method is used for the concentration of $A l_{2} (S i O_{3})_{3}$ .

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