Which of the following metals,Ag,Zn,Cu,Ni,Au,Pt,Sn,cannot be extracted by hydrometallurgical reduction of their ions with hydrogen?
A)Au,Pt
B)Ag,Au,Pt
C)Zn,Ni,Au
D)Zn,Ni,Sn
E)Ag,Cu,Au,Pt

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The Answer of Which of the following metals,Ag,Zn,Cu,Ni,Au,Pt,Sn,cannot be extracted by hydrometallurgical reduction of their ions with hydrogen?
A)Au,Pt
B)Ag,Au,Pt
C)Zn,Ni,Au
D)Zn,Ni,Sn
E)Ag,Cu,Au,Pt

Which of the Following Metals,Ag,Zn,Cu,Ni,Au,Pt,Sn,cannot Be Extracted by Hydrometallurgical Reduction