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Gold is extracted by hydrometallurgical process based on its property

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Of being less reactive

To form salts which are water soluble

Of being electropositive

To form complexes which are water soluble

answer is C.

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Detailed Solution

Hydrometallurgy is the process of dissolving the metal or its ore by the action of a suitable chemical regent followed by recovery of the metal either by electrolysis or by the use of a suitable precipitating agent.

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