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Which of the following metals is obtaine...

Which of the following metals is obtained by leaching out process using a solution of `NaCN` and then precipitating the metal by addition of zinc dust?

A

Copper

B

Silver

C

Nickel

D

Iron

Text Solution

Verified by Experts

The correct Answer is:
B
`Ag_(2)S+4NaCNrarr2Na[Ag(CN)_(2)]+Na_(2)S`
`2Na[Ag(CN)_(2)]+ZnrarrNa_(2)[Zn(CN)_(4)]+2Ag`
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