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AMU Medical AMU Solved Paper-2005

  • question_answer
    Which of the following is the chief ore of copper?

    A)  \[C{{u}_{2}}S\]                                

    B)  \[C{{u}_{2}}O\]

    C)  \[CuFe{{S}_{2}}\]                           

    D)  \[CuC{{O}_{3}}\,.\,\,2{{H}_{2}}O\]

    Correct Answer: C

    Solution :

                     Copper occurs as native copper as well as in combined state. The main ores of copper are
    I. Copper glance   \[C{{u}_{2}}S\]
    II. Copper pyrites \[CuFe{{S}_{2}}\]
    III. Malachite      \[Cu{{(OH)}_{2}}.\,CuC{{O}_{3}}\]
    IV. Cuprite        \[C{{u}_{2}}O\]
    V. Azurite        \[2CuC{{O}_{3}}.\,\,Cu{{(OH)}_{2}}\]
    Copper pyrites \[(CuFe{{S}_{2}})\] is the chief ore of copper.


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