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NEET Chemistry Metallurgy / धातुकर्म Question Bank Self Evaluation Test - General Principals and Process of Isolation of Elements

  • question_answer
    Purification of silicon element used in semiconductors is done by

    A) zone refining      

    B) heating

    C) froth floatation  

    D) heating in vacuum

    Correct Answer: A

    Solution :

    [a] Silicon is purified by zone refining. Metals of high purity are always purified by zone refining.


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