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  • Question 1
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    Radium is obtained from:

  • Question 2
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    $$Al_2O_3$$ formation from aluminium and oxygen involves evolution of a large quantity of heat, which makes aluminium use in

  • Question 3
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    A layer of coke is spread over bauxite during electrolytic reduction of alumina by Hall Heroult process. This layer acts as a/an

  • Question 4
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    One of the natural minerals of sodium is tincal. Its formula is:

  • Question 5
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    Potassium nitrate is called:

  • Question 6
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    Among the following incorrect statements is:

  • Question 7
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    Which of the following pairs are not correctly matched with respect to the extraction of metals from their ores

  • Question 8
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    The impurities associated with minerals used in metallurgy are collectively called

  • Question 9
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    Froth - floatation method is successful in separating impurities from ores because

  • Question 10
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    Froth floatation process is used for the concentration of

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