1.

Extraction of `Ag` from sulphide ore and removel of unreacted silver bromide from photogrphic plate involve complexes:A. `[Ag(S_(2)O_(3))_(2)]^(3-)`in bothB. `[Ag(CN)_(2)]^(-)`in bothC. `[Ag(S_(2)O_(3))_(2)]^(3-),[Ag(CN)_(2)]^(-)`respectivelyD. `[Ag(CN)_(2)^(-),[Ag(S_(2)O_(3))_(2)]^(3-)`respectively

Answer» Correct Answer - D
`Ag_(2)S +4CN^(-) rarr 2[Ag(CN)_(2)]^(-)+S^(2-)`
`AgBr +2S_(@)O_(3)^(2-) rarr [Ag(S_(2)O_(3))]^(3-)+Br(-)`


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