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  • Question 1
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    Sequence the following steps involved generally in the extraction of a metal in pure form from its ore.
    (a) The metal obtained from its oxide require further purification for end use.
    (b) The ore should be converted to its oxide form.
    (c) The ore is beneficial to us if it is handpicked then metal crushed and ground, and later subjected to pulverization as per the requirement
    (d) The ore in the form of oxide is required to be reduced.
    (e) Dressed ore is required for it to be concentrated.

  • Question 2
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    In the electrolytic reduction of alumina, the electrolyte is covered with coke powder because, if :

  • Question 3
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    A mixture of sand and salt can be separated by:

  • Question 4
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    Which of the following method is used for extracting metals from ores?

  • Question 5
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    What is electrolysis??

  • Question 6
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    Prior to reduction, metal sulphide and carbonates are converted into oxides because:

  • Question 7
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    What is concentration of ore?

  • Question 8
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    _________ is the removal of oxygen for extraction of metal from ore.

  • Question 9
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    Ores contain a large amount of impurities, which is called as:

  • Question 10
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    Which of the following statement is not correct about Ellingham diagram?

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