Which of the following metals is obtained by the reduction of its oxide by aluminium?

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Manganese is extracted by the aluminothermic process (Goldschmidt thermite process) where Mn₃O₄ is reduced by aluminium: 3Mn₃O₄ + 8Al → 9Mn + 4Al₂O₃. This works for metals with less reactivity than Al but not too reactive. Sodium is extracted by electrolysis. Iron is extracted by smelting with coke. Zinc by carbon reduction/electrolysis.

Which of the following metals is obtained by the reduction of its oxide by aluminium? MCQ with Answer and Explanation

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