RAJASTHAN PMT Rajasthan - PMT Solved Paper-1998

  • question_answer
    The ore of aluminium is:

    A)  siderite         

    B)                         stephanite

    C)                         malachite      

    D)                         cryolite

    Correct Answer: D

    Solution :

    The ore of aluminium is cryolite \[(N{{a}_{3}}Al{{F}_{6}})\]


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