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Railways RRB (Assistant Loco Pilot & Technician) Solved Paper-2 (2014)

  • question_answer
    When \[S{{O}_{2}}\] is passed through acidified solution of potassium dichromate, then chromium sulphate is formed, the change in valency of chromium is

    A)  \[+4\] to \[+2\]                       

    B)  \[+5\] to \[+3\]

    C)  \[+6\] to \[+3\]                       

    D)  \[+7\] to \[+2\]

    Correct Answer: C

    Solution :

    When \[S{{O}_{2}}\] is passed through acidified solution of potassium dichromate, then chromium sulphate is formed the change in valency of chromium is \[+6\] to\[+3\].


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