Which of the following ores are concentarted by froth floatation?
Which of the following ores are concentarted by froth floatation?
A. Haematite
B. Galena
C. Copper pyrites
D. Magnetite
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Correct Answer - B::C
(b,c) Haematite `(Fe_(2)O_(3))` and magnetite `(Fe_(3)O_(4))` are oxide ores while galena (PbS) and copper pyrites `(CuFeS_(2))` are sulphide ores. As we know sulphide ores are extracted by using froth floatation method. Hence (b) and ( c) are the correct choices.
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