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Railways Sample Paper RRBs Assistant Loco Pilot and Technician CBT STAGE-I Sample Paper-8

  • 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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