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General Princip...

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  • Question 1
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    An ore on heating in air forms $$SO_{2}$$. State the process that will be used for its concentration.

  • Question 2
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    Define roasting.

  • Question 3
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    Ores in the form of sulphide and carbonate are converted into:

  • Question 4
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    In froth floatation process for the purification of ores, the particles of ore float because :

  • Question 5
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    Which one of the following ores is concentrated by froth floatation process?

  • Question 6
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    A number of elements available in earth's crust but most abundant elements are:

  • Question 7
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    The ratio of $$Fe_{2}O_{3}$$ and $$Al$$ by weight, in thermite is about:

  • Question 8
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    ___________ metals occur free in nature.

  • Question 9
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    A mixture of $$Sn$$ and $$Pb$$ can be separated by __________ method.

  • Question 10
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    The first step in the hydrometallurgical process is___________.

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