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  • Question 1
    4 / -1

    When an aqueous solution of sodium chloride is electrolysed using platinum electrodes, the ions discharged at the electrodes are

  • Question 2
    4 / -1

    Cassiterite is an ore of

  • Question 3
    4 / -1

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

  • Question 4
    4 / -1

    Galena is an ore of

  • Question 5
    4 / -1

    Which of the following metal is leached by cyanide process?

  • Question 6
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    The common method of extraction of metals from oxide ores is

  • Question 7
    4 / -1

    Which one of the following ores is not concentrated by froth floatation process?

  • Question 8
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    The method of zone refining of metals is based on the principle of

  • Question 9
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    In the extraction of copper from its sulphide ore, the metal is formed by reduction of Cu2O with

  • Question 10
    4 / -1

    In presence of oxygen, removal of sulphur from an ore is included in

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