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CMC Medical CMC-Medical VELLORE Solved Paper-2007

  • question_answer
    Cupellation process is used in the metallurgy of

    A)  Cu                                         

    B)  Ag

    C)  Al                                          

    D)  Fe

    Correct Answer: B

    Solution :

                    Impurity of Pb present in silver can be removed as volatile oxide PbO in the process called cupellation. Here impure silver is heated in a cupel (boat shaped shallow crucible made up of bone ash)


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