RAJASTHAN ­ PET Rajasthan PET Solved Paper-2005

  • question_answer
    During the extraction of aluminium, cryolite adds in alumina

    A)  to obtain pure\[Al\]

    B)  to dissolve alumina

    C)  to remove impurities

    D)  to catalysis

    Correct Answer: B

    Solution :

     During the extraction of aluminium cryolite is added in alumina because it dissolves alumina and reduces the melting point of alumina.


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