2. Sample Papers
  3. Railways

Railways Sample Paper RRBs Assistant Loco Pilot and Technician CBT STAGE-I Sample Paper-5

  • question_answer
    Permanent hardness of water may be removed by the addition of

    A)  Potash alum

    B)  Lime

    C)  Sodium carbonate

    D)  Potassium permanganate

    Correct Answer: C

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