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

  • question_answer
    Which of the following metals is present in the anode mud during the electrolytic refining of copper?

    A)  Sodium

    B)  Aluminium

    C)  Selenium         

    D)  Both [b] and [c]

    Correct Answer: C

    Solution :

    [c] In electrolytic refining of copper, the common elements present in anode mud are: Selenium, tellurium, silver, gold, platinum and antimony. These elements are very less reactive. Thus they are not affected during purification process.


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