2. Sample Papers
  3. 3rd Class
  4. General Knowledge

3rd Class General Knowledge Sample Paper General Knowledge Olympiad Model Test Paper-2

  • question_answer
    Which one of the following causes air pollution?

    A)  Washing clothes and cattle in rivers

    B)  Deforestation and soil erosion

    C)  Emissions from industries and manufacturing activities

    D)  Both (a) & (b)

    E)  None of these

    Correct Answer: C

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