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
    Select the process that does not add particulate materials to air.

    A)  Use of air conditioner

    B)  Burning of fossil fuels

    C)  Paper industry

    D)  Incomplete combustion of coal

    Correct Answer: A

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