Which ore can be best concentrated by froth flotation process?

Malachite

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Cassiterite

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Galena

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Magnetite

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Solution

The correct option is C
Galena

Sulphide ores are concentrated by froth floatation. Galena is an ore that contains $P b S$ . Cassiterite is an oxide ore: $S n O_{2}$

Magnetite is $F e_{3} O_{4}$ while malachite is $C u_{2} C O_{3} (O H)_{2}$

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