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General Princip...

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  • Question 1
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    General method for the extraction of metal from oxide ore is

  • Question 2
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    Which element is found in free state ?

  • Question 3
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    Which occurs in nature in free state?

  • Question 4
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    A substance which reacts with gangue to form fusible material is called

  • Question 5
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    Which one of the following is Fluorspar?

  • Question 6
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    Which of the following metal is not found in free state

  • Question 7
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    The important step in the extraction of metal from carbonate ore is

  • Question 8
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    For which ore of the metal , forth floatation method is used for concentration

  • Question 9
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    The method of zone refining of metals is based on the principle of

  • Question 10
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    Iron is extracted from magnetite by reduction with

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