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प्रश्न
Which one of the following ores is best concentrated by froth floatation method?
पर्याय
Magnetite
Siderite
Galena
Malachite
MCQ
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उत्तर
Galena
Explanation:
Galena (PbS) is best concentrated by the froth flotation method because it is a sulphide ore, and froth flotation is particularly effective for sulphide ores. The ore particles become hydrophobic due to the collector agents used, allowing them to attach to air bubbles and float to the surface, thus separating from the gangue. Magnetite, siderite, and malachite are not sulphide ores and therefore are not best concentrated by froth flotation. This is aligned with the textbook explanation specifying that froth flotation is most suitable for ores like galena.
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