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

9th Class Science Sample Paper Science Olympiad Model Test Paper-4

  • question_answer
    Bats detect the obstacles in their path by receiving the reflected _______.

    A) X - rays            

    B) Ultrasonic waves

    C) Electromagnetic waves

    D) Infrasonic waves

    E) None of these

    Correct Answer: B

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