2. Sample Papers
  3. 9th Class
  4. Science

9th Class Science Sample Paper Science Olympiad Model Test Paper-11

  • question_answer
    The frequency which is not audible to the human ear is:

    A) 30 Hz

    B) 300 Hz

    C) 3000 Hz

    D) 30000 Hz

    E) None of these

    Correct Answer: D

You need to login to perform this action.
You will be redirected in 3 sec spinner