Which of the following ores are concentrated by froth floatation ?
Which of the following ores are concentrated by froth floatation ?
A. Haematite
B. Galena
C. Copper pyrites
D. Magnetite
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Correct Answer - B::C
Both Galena (PbS) and Copper pyrites `(CuFeS_(2))` are the sulphide ores.
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