What Is Not an Appropriate Method of Isolating the Metals

question 118

Multiple Choice

What is not an appropriate method of isolating the metals shown?

• A)HgS(s)+ O₂(g)+ heat → Hg(g)+ SO₂(g)
• B)ZnO(s)+ C(s)+ heat → Zn(g)+ CO(g)
• C)WO₃(s)+ 3 H₂(g)+ heat → W(s)+ 3 H₂O(g)
• D)Al₂O₃(s)+ 2 Cr(s)+ heat → Cr₂O₃(s)+ 2 Al(l)

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