2. Sample Papers
  3. Railways

Railways Sample Paper RRBs Assistant Loco Pilot and Technician CBT STAGE-I Sample Paper-7

  • question_answer
    Of the following metals which one is the cause of concern in air pollution in large cities?

    A)  Nickel  

    B)  Chromium    

    C)  Copper

    D)  Lead

    Correct Answer: D

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