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  3. 4th Class
  4. Science

4th Class Science Sample Paper Science Olympiad Model Test Paper-2

  • question_answer
    Rahul collects waste from 100 houses of a village and throws it in a nearby river. What type of pollution is he causing?

    A) Air pollution

    B) Land pollution

    C) Water pollution

    D) All of these

    E) None of these

    Correct Answer: C

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