MetallurgyHardBloom L3

Question

Which of the following process is not associated with recovery of the silver -

Options

A.As a side product in electrolytic refining of copper
B.Parke's process in which Zn is used to extract silver by solvent extraction from molten lead
C.By reaction of silver sulphide with KCN and then reaction of soluble complex with Zn
D.By boiling Na[Ag(CN)2] aq.

Solution

Sol. Ag can not be recovered by boiling Na[Ag(CN)2] solution.

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