2. Sample Papers
  3. Railways
  4. General Science & Technology
  5. Occurence and Extraction of Metals

Railways General Science & Technology Occurence and Extraction of Metals Sample Paper Occurence and Extraction of Metals Sample Test Paper-18

  • question_answer
    Zone refining is used for the purification of

    A)  Au                  

    B)  Ge

    C)  Ag                  

    D)  Cu

    Correct Answer: B

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