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Extractive Meta...

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  • Question 1
    1 / -0

    The impurities associated with the ore after mining are collectively called

  • Question 2
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    An ore after levigation is found to have acidic impurities. Which of the following can be used as flux during smelting operation?

  • Question 3
    1 / -0

    The rocks formed by the solidification of magma over the years are

  • Question 4
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    Extraction of silver from Ag2s by the use of sodium cyanide is an example of

  • Question 5
    1 / -0

    Which of the following metals can be extracted by smelting?

  • Question 6
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    Which of the following barium salts is soluble in water?

  • Question 7
    1 / -0

    Alkali metals do not exist in free state in nature because these are

  • Question 8
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    In the froth-floatation process for beneficiation of the ores, the ores, the ore particles float because

  • Question 9
    1 / -0

    The salt which is least likely to be found in minerals is

  • Question 10
    1 / -0

    Electromagnetic separation is used in the concentration of

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