Hydro metallurgy is used in the extraction of:

C u

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A l

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M g

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N a

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Solution

The correct option is B $C u$
Hydrometallurgy: The use of aqueous solutions for the recovery of metals. Example: Leaching of copper oxide ores using sulphuric acid solutions.

The copper can then be recovered from the solution using solvent extraction.

Copper is less electropositive and can be readily displaced from its solution by more active metal.

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