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  • Question 1
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    Sulphide ores are converted into oxides for the extraction of metals because

  • Question 2
    1 / -0

    Fluorspar in the electrolytic reduction of alumina is dissolved in fused cryolite (Na3AlF6)

  • Question 3
    1 / -0

    Blister copper is

  • Question 4
    1 / -0

    Sphalerite and calamine are ores of

  • Question 5
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    During the extraction of Al, coke powder is spread over the molten electrolyte in order to

  • Question 6
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    Which of the following methods is used for refining silver metal, containing lead impurity?

  • Question 7
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    There are some chemical methods involved during the refining of metals. These methods are:

    (I) Liquation
    (II) Distillation
    (III) Cupellation
    (IV) Zone refining

    Which method(s) is/are used to extract silver from argentiferous lead?

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