Answer

A, B, D

Explanation

(A) `AgBr+2NH_(4)OH to [Ag(NH_(2)_(2)]Br+2H_(2)O`
`AgBr+2KCN to K[ Ag (CN)_(2)]=KBr`
(B) `AgCl+2NH_(4)OH to [Ag(S_(2)O_(3)]+NaBr`
`AgCl+2KCN to Kp Ag(CN-(3))_(2)]+KCI`
`AgCl +2Na2S_(2)O_(3) to Na_(3)[Ag(S_(2)O_(3))_(2)]+NaCl`
(C) `Cu^(+3)+4NH_(3) to [Cu(NH_(3))_(4)]^(+2)`
`Cu^(+2)+6CN^(-) to [Cu(CN)_(6)]^(-3)`
`Cu^(+2)+Na_(2)S_(2)O_(3) to CuS_(2)O_(3)+2Na^(+)`
`2CuS_(2)O_(3)+Na_(2)S_(2)O_(3) to Cu_(2)S_(2)O_(3)+Na_(2)S_(4)O_(6)`
`3Cu_(2)S_(2)O_(3)+2Na_(2)S_(2)O_(3) to Na_(4)[Cu_(6)(S_(2)O_(3))_(5)]` Sodium Cuprothio sulphate
(D) `Ag_(2)S+4KCNto 2K[Ag(CN)_(2)]+K_(2)S`