Extraction of gold and silver involves leaching with `CN^(-)`ion.silver is later recovered by:A. LiquationB. DistillationC. Zone refiningD. Displacement with Zn

Extraction of gold and silver involves leaching with `CN^(-)`ion.silve

1.	Extraction of gold and silver involves leaching with `CN^(-)`ion.silver is later recovered by:A. LiquationB. DistillationC. Zone refiningD. Displacement with Zn
Answer» Correct Answer - D Zn being more reactive than Ag and Au , displaces them . From Native ore , `4Ag+8NaCN+2H_(2)O+O_(2) overset("Leaching")to underset("Soluble Sodium dicyanoargentate(I)")(4Na[Ag(CN)_(2)])+4NaOH` `2Na[Ag(CN)_(2)]+Zn overset("Displacement")to Na_(2)[Zn(CN)_(4)]+2Ag darr `

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Extraction of gold and silver involves leaching with `CN^(-)`ion.silver is later recovered by:A. LiquationB. DistillationC. Zone refiningD. Displacement with Zn

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