Q. 20

Which of the following ores are concentrated by froth floation?
A. Haematite

B. Galena

C. Copper pyrites

D. Magnetite

Answer :

Only sulphide ores are concentrated by froth floatation. Galena(PbS) and Copper pyrites(CuFeS2) are sulphide ores while Haematite(Fe2O3) and Magnetite(Fe3O4) are oxides and cannot be concentrated by froth floatation.

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