Which of the following process is used for concentration of ore?

Froth flotation

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Electrolytic methods

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Smelting

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Hoop's process

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Solution

The correct option is A Froth flotation
Froth flotation method is used for the concentration of sulphide ores.

The method is based on the preferential wetting properties with the frothing agent and water. In the given options, Galena (PbS) is the only sulphide ore.

Hence, option A is correct.

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