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Metals and Non-...

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  • Question 1
    1 / -0

    Which of the following ores cannot be reduced simply by heating in the air?

  • Question 2
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    From which of the following minerals can the metal be extracted profitably?

  • Question 3
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    In the process of electrolytic refining, which of the following processes occur on passing electric current through the electrolyte?

  • Question 4
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    During electrolytic refining of nickel, _______ is taken as anode.

  • Question 5
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    The reaction between ___________ is called thermite reaction.

  • Question 6
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    Calcination is done for the reduction of which of the following compounds?

  • Question 7
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    Copper reacts with moist carbon dioxide in the air to form _________.

  • Question 8
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    Which of the following is necessary for rusting to take place?

  • Question 9
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    During the electrolytic refining of metals, insoluble impurities are known as 

  • Question 10
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    Which of the following metals can be extracted from its sulphide ore simply by heating?

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