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JEE Main & Advanced Chemistry The p-Block Elements-I / p-ब्लॉक के कुछ तत्व-I Question Bank Boron Family

  • question_answer
    In the metallurgy of aluminium, cryolite is mixed in the molten state because it [Roorkee 1995]

    A) Increases the melting point of alumina

    B) Oxidises alumina

    C) Reduces alumina

    D) Decreases the melting point of alumina

    Correct Answer: D

    Solution :

    Cryolite \[N{{a}_{3}}Al{{F}_{6}}\] (1) Decreases the melting point of alumina (2) Increases conductivity of the solution


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