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  • Question 1
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    When a metal is to be extracted from its ore, if the gangue associated with the ore is silica, then

  • Question 2
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    Which of the following methods is correct for separation of an ore of tin containing FeCrO4?

  • Question 3
    1 / -0

    Xanthates are used as collectors in the froth floatation process because they

  • Question 4
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    In the extraction of copper from its sulphide ore, the metal is finally obtained by the reduction of cuprous oxide with

  • Question 5
    1 / -0

    Blister copper is refined by stirring molten impure metal with green logs of wood because such a log liberates hydrocarbon gases. The metal contains impurities of ________ and this process is called _______.

  • Question 6
    1 / -0

    Van Arkel method of purification of metals involves converting the metal into a

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