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NEET2018ChemistryGeneral Principles and Processes of Isolation of MetalsActual

Considering Ellingham diagram, which of the following metals can be used to reduce alumina?

Options

  1. AMg
  2. BZn
  3. CFe
  4. DCu

Correct answer

A. Mg

Step-by-step solution

Mg has more ( − ve ) ΔG value than alumina. So it will be in the lower part of Ellingham diagram. Metals which has more ( − ve ) ΔG value can reduce those metal-oxide which has less ( − ve ) ΔG value.

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