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Railways Sample Paper RRB (Assistant Loco Pilot) Sample Test Paper-1

  • question_answer
    Permanent hardness of water, due to sulphates of the metal, can be destroyed by the use of

    A)  Nitrates                        

    B)         Zeolites            

    C)                     Sulphonates     

    D)                     None of these

    Correct Answer: B

    Solution :

    Not available


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