RAJASTHAN PMT Rajasthan - PMT Solved Paper-1995

  • question_answer
    Cryolite is added to alumina in the extraction of aluminium:

    A)  to remove impurity

    B)  to dissolve alumina

    C)  to catalyze

    D)  to obtain pure \[Al\]

    Correct Answer: B

    Solution :

    Cryolite \[(N{{a}_{3}}Al{{F}_{6}})\] is added to alumina in the extraction of aluminium to dissolve alumina


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