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JEE Main & Advanced JEE Main Paper (Held On 10 April 2015)

  • question_answer
    In the isolation of metals, calcination process usually results in: JEE Main Online Paper (Held On 10 April 2015)

    A)  metal oxide

    B)  metal carbonate

    C)  metal hydroxide

    D)  metal sulphide

    Correct Answer: A

    Solution :

                     Metal oxide calculation is the process of heating ore in absence of air e.g. Calcium carbonate gives \[CaC{{O}_{3}}\xrightarrow[{}]{\Delta }CaO+C{{O}_{2}}\] as calculation.


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