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General Princip...

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  • Question 1
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    The correct statements with respect to Ellingham's diagram among the following are
    (I) Magnesium reduces aluminium oxide below 1700 K
    (II) Aluminium reduces magnesium oxide above 1700 K
    (III) Aluminium reduces magnesium oxide below 1700 K
    (IV) Magnesium reduces aluminium oxide above 1700 K

  • Question 2
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    The mass of carbon anode consumed (giving the only carbon dioxide) in the production of 270kg270kg of aluminium metal from bauxite by the Hall process is: 

    [atomic mass Al=27Al=27]

  • Question 3
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    Copper, a metal known from ancient times, has many uses, some of which are mentioned here. Can you pick the false one?

  • Question 4
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    Pyrolusite is:

  • Question 5
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    Which of the following ores are concentrated by Froth Flotation.

  • Question 6
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    The reduction of an oxide by aluminium is called:

  • Question 7
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    Impurities of sulphur, silicon, and phosphorus can be removed from cast iron by adding:

  • Question 8
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    For the reduction of FeOFeO with CC at the temperature corresponding to (D)(D), which of the following statements is correct?

  • Question 9
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    The mineral carnallite contains __(i)___and __(ii)____metals. ____(iii)____ is purified by cupellation and ____(iv)_____is purified by distillation.

  • Question 10
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    Which of the following statements is correct according to the basic concept of thermodynamics which govern the feasibility of a metallurgical process?

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