2. Sample Papers
  3. 8th Class
  4. Science

8th Class Science Sample Paper Science Olympiad Model Test Paper-7

  • question_answer
    Which one of the following sounds can't be heard by us?

    A) Sound having frequency 50 hertz

    B) Sound having frequency 2000 hertz

    C) Sound having frequency 19500 hertz

    D) Sound having frequency 50000 hertz

    E) None of these

    Correct Answer: D

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