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In hydrometallurgy, Zn is used as oxidising agent in the purification of Ag from Ag(CN)2â.

When pine oil or eucalyptus oil is added into the water, it lowers down the surface tension by which froth is formed

Sodium ethyl xanthate is used as collector

Basic copper carbonate or PbSO4 is concentrated by froth flotation method by using an activator

answer is 铤.

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Detailed Solution

Hydrometallurgy is a chemical metallurgy method that conducts separation and extraction of metals based on reaction in aqueous medium.

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