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  • Question 1
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    Fe is extracted from its oxides by reduction with CO in the blast furnace to get pig iron, which contains about 4% carbon. This carbon is removed by heating with

  • Question 2
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    When compared to ΔGo for the formation of Al2O3, the ΔGo for the formation of Cr2O3 is

  • Question 3
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    According to Ellingham diagram, the oxidation reaction of carbon to carbon monoxide may be used to reduce which of the following oxides at the lowest temperature?

  • Question 4
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    What are the oxidation states of the metal in the minerals magnetite and haematite?

  • Question 5
    1 / -0

    In the metallurgy of aluminium, purified Al2O3 is mixed with

    A. Na3AlF6
    B. CaF2
    C. NaF
    D. AlF3

  • Question 6
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    Which of the following is used as a reducing agent in the cyanide extraction process of silver from argentite ore?

  • Question 7
    1 / -0

    Which of the following elements is extracted commercially by the electrolysis of an aqueous solution of its compound?

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