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  4. Sulphide ores of metals are usually concentrated by froth floatation process. Which one of the following sulphide ores offers an exception and is concentrated by chemical leaching?

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Q. Sulphide ores of metals are usually concentrated by froth floatation process. Which one of the following sulphide ores offers an exception and is concentrated by chemical leaching?

Rajasthan PETRajasthan PET 2011

Solution:

Galena $ (PbS), $ copper pyrite $ (CuFe{{S}_{2}}) $ and argentite $ (A{{g}_{2}}S) $ are concentrated by froth floatation process but sphalerite $ (ZnS) $ is concentrated by chemical leaching.