New ! Chemistry MCQ Practise Tests



Metallurgy 5 Mark Book Back Question Paper With Answer Key

12th Standard

    Reg.No. :
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Chemistry

Time : 00:45:00 Hrs
Total Marks : 20

     5 Marks 

    4 x 5 = 20
  1. Explain zone refining process with an example.

  2. Using the Ellingham diagram,
    (A) Predict the conditions under which
    (i) Aluminium might be expected to reduce magnesia.
    (ii) Magnesium could reduce alumina.
    (B) it is possible to reduce Fe2O3 by coke at a temperature around 1200K

  3. Explain the principle of electrolytic refining with an example.

  4. Give the limitations of Ellingham diagram.

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