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 Air Pollution Sample Test Paper-20

  • question_answer
    Main source of lead in air is from

    A)  Sewage

    B)  leaded gasoline

    C)  Tobacco          

    D)  insecticide

    Correct Answer: B

    Solution :

    [b] Gasoline mixed with tetra ethyl lead is the main source of lead in the atmosphere.


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