Q17 / 90 · JEE Main 2019 (09 Jan Shift 2) · Chemistry

The correct statement regarding the given Ellingham diagram is:

Figure

  • Correct answer
    A
    At 1400oC,Al can be used for the extraction of Zn  from ZnO .
  • B
    At 500oC, coke can be used for the extraction of Zn  from ZnO
  • C
    At 800oC,Cu can be used for the extraction of Zn  from ZnO
  • D
    Coke cannot be used for the extraction of Cu  from Cu2O

Solution

According to the Ellingham diagram, the species that is going to act as reducing agent should lie below the substance to be reduced at the particular temperature.

 As is visible from the graph, at 1400o C, the line of Al lies below the line of ZnO. Hence, Al can be used for reducing ZnO to Zn.

Hence, the correct answer is option: 'A'.

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