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Question

Which one of the following ores is best concentrated by froth flotation method?

A
Galena
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B
Cassiterite
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C
Magnetie
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D
Malachite
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Solution

The correct option is A Galena
Froth flotation method is used for removing gangue from sulphite ores.
Galena is PbS, Cassiterite is SnO2, Magnetite is Fe3O4 and Malachite is CuCO3.Cu(OH)2.

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