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

  • question_answer
    Pyrophosphoric acid is a

    A)  monobasic acid         

    B)  dibasic acid

    C)  tribasic acid               

    D)  tetrabasic acid

    Correct Answer: D

    Solution :

    Pyrophosphoric acid is a tetrabasic acid \[=({{H}_{4}}{{P}_{2}}{{O}_{7}})\]


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