A) Mg
B) Ag
C) Cu
D) Na
Correct Answer: B
Solution :
Silver ore forms a soluble complex with NaCN from which silver is precipitated using scrap zinc. \[4Ag\,+8C{{N}^{-}}+\,2{{H}_{2}}O+{{O}_{2}}\to \underset{So\operatorname{lub}le\,\,complex}{\mathop{4[Ag{{(C{{N}_{2}})}^{-}}}}\,+\,\,4O{{H}^{-}}\]You need to login to perform this action.
You will be redirected in
3 sec