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

question 43

Multiple Choice

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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