NEET Sample Paper NEET Sample Test Paper-14

  • question_answer Which of the following methods is used for obtaining aluminium metal?

    A)  Electrolysing fused \[A{{l}_{2}}{{O}_{3}}\]and cryolite.

    B)  By heating\[A{{l}_{2}}{{O}_{3}}\]with carbon.

    C)  By heating\[A{{l}_{2}}{{O}_{3}}\]in Muffle furnace.

    D)  By a process called pyrometallurgy.

    Correct Answer: A

    Solution :

    Al is obtained by the electrolysis of \[\text{A}{{\text{l}}_{\text{2}}}{{\text{O}}_{\text{3}}}\]mixed with Cryolite \[(N{{a}_{3}}Al{{F}_{6}}).\] Hence, the correct option is [a].

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