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Extractive Metallurgy Test - 1
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Extractive Metallurgy Test - 1

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  • Question 1/10
    1 / -0

    The actual reducing agent of hematite in blast furnace is

    Solutions

     

  • Question 2/10
    1 / -0

    Electrolytic bath electrolytic refining of lead contains

  • Question 3/10
    1 / -0

    The process of producing a hard coating of iron nitride on the surface of steel is called

  • Question 4/10
    1 / -0

    The main function of roasting is

  • Question 5/10
    1 / -0

    Calamine is an ore of

    Solutions

    Calamine is an ore of Zn containing ZnCO3.

     

  • Question 6/10
    1 / -0

    Froth floatation process for the concentration of ores is a practication of

    Solutions

    Gangue particles are wetted by water and adsorbed.

     

  • Question 7/10
    1 / -0

    The material used in semiconductors

  • Question 8/10
    1 / -0

    Plumbo-solvency refers to

    Solutions

    Lead dissolves in water containing dissolved air, due to the formation of lead hydroxide. This solvent action of water on lead is called plumbo-solvency.

     

  • Question 9/10
    1 / -0

    Which of the following is manufactured by siemens martin process?

  • Question 10/10
    1 / -0

    The metal oxide, which cannot be reduced to metal by carbon is

    Solutions

    Al has more affinity for oxygen than carbon.

     

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