2. Sample Papers
  3. Railways
  4. General Science & Technology
  5. Pollution of Air and Water

Railways General Science & Technology Pollution of Air and Water Sample Paper Water Pollution Sample Test Paper-21

  • question_answer
    Which of the following metal is a water pollutant and causes sterility in human being

    A)  As                   

    B)  Mn

    C)  Mg                  

    D)  Hg

    Correct Answer: B

You need to login to perform this action.
You will be redirected in 3 sec spinner