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General Principles and Processes of Isolation of Elements Test - 1

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General Principles and Processes of Isolation of Elements Test - 1
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  • Question 1
    1 / -0

    Metals which occur in native state in nature

    Solution

    Explanation:

    Least reactive metals are found in native state.

     

     

  • Question 2
    1 / -0

    Metal which is found in free state is

    Solution

    Explanation:

    Gold is least reactive metal.

     

     

  • Question 3
    1 / -0

    Which among the following statement is correct?

    Solution

    Explanation:

    All ores are minerals but vice versa is not true. Because ores are the minerals from which metal can be profitably extracted.

     

     

  • Question 4
    1 / -0

    Which is the most abundant metal on earth?

    Solution

    Explanation:

    Aluminium is most abundant.

     

     

  • Question 5
    1 / -0

    The impurities associated with ore is known as

    Solution

    Explanation:

    Gangue are the unwanted particles present with ores.

     

     

  • Question 6
    1 / -0

    The common impurity present in most of the ores is

    Solution

    Explanation:

    Silica is most common impurity present in ores.

     

     

  • Question 7
    1 / -0

    Which metal is also found in sea beds ?

    Solution

    Explanation:

    Manganese is found in sea beds.

     

     

  • Question 8
    1 / -0

    The sulphide ore of iron is

    Solution

    Explanation:

    FeS2 is iron pyrites.

     

     

     

  • Question 9
    1 / -0

    Carbonate ore of iron is

    Solution

    Explanation:

    FeCO3 is siderite.

     

  • Question 10
    1 / -0

    The process of separating gangue and other impurities from the metals is known as

    Solution

    Explanation:

    Process of removal of impurities from ore is known as concentration of ore or benefication of ore.

     

     

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