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Which one of the following ores is best concentrated by froth floatation method ?

1. Magnetite
2. Siderite
3. Galena
4. Malachite

Correct answer: Galena

Solution

Galena is best concentrated by froth flotation because it is a sulfide mineral that has a high density and hydrophobic properties, allowing it to effectively separate from gangue materials in the flotation process.

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