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Provide me latest MCQ Questions for Class 8 Science Chapter 13 Sound Free PDF Download so I can prepare for exams. Kindly give Chapter 13 Sound Class 8 Science MCQs Questions with Answers quickly as it is very essential.

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Below you will find MCQ Questions of Chapter 13 Sound Class 8 Science Free PDF Download that will help you in gaining good marks in the examinations and also cracking competitive exams. These Class 8 MCQ Questions with answers will widen your skills and understand concepts in a better manner.

MCQ Questions for Class 8 Science Chapter 13 Sound with Answers

MCQ Questions for Class 8 Science Chapter 13 Sound with answers

1. The voice box is also called:

(a) Stomach

(b) Heart

(c) Larynx

(d) Mouth

► (c) Larynx

2. The shape of the outer part of human ear is like a

(a) Drum

(b) Frustum

(c) Funnel

(d) Dumbbell

► (c) Funnel

3. In human beings, sound is produced due to vibration of

(a) Teeth

(b) Lips

(c) Tongue

(d) Vocal cords

► (d) Vocal cords

4. Damage to which of the following parts of ear cause hearing impairment?

(a) Pinna

(b) Oval window

(c) Tympanic membrane

(d) Ear canal

► (c) Tympanic membrane

5. In which of the three media does sound travel the fastest?

(a) Air

(b) Water

(c) Steel

(d) Speed is same in any medium

► (c) Steel

6. The pitch of sound depends on:

(a) Frequency

(b) Amplitude

(c) Both of the above

(d) None of the above

► (a) Frequency

7. The minimum distance from sound reflecting surface to hear an echo is about

(a) 17.2 m

(b) 35 m

(c) 27.2 m

(d) 20 m

► (a) 17.2 m

8. Large amplitude of sound vibrations will produce:

(a) Loud sound

(b) Meak sound

(c) Slow sound

(d) Shreak

► (a) Loud sound

9. Ultrasound equipment for investigating and tracking medical problems, works at frequency

(a) At any frequency

(b) At 20000 Hz only

(c) Higher than 20000 Hz

(d) Lower than 20000 Hz

► (c) Higher than 20000 Hz

10. Flash and thunder are produced simultaneously. But thunder is heard a few seconds after the flash is seen. Why?

(a) The speed of sound is greater than the speed of light.

(b) The speed of sound is equal to the speed of light.

(c) The speed of light is greater than the speed of sound.

(d) All of the above

► (c) The speed of light is greater than the speed of sound.

11. Loudness of sound depends upon its

(a) Wavelength

(b) Amplitude

(c) Frequency

(d) Time-period

► (b) Amplitude

12. 1 hertz is equal to

(a) 1 vibration per minute

(b) 10 vibrations per minute

(c) 600 vibrations per minute

(d) 60 vibrations per minute

► (d) 60 vibrations per minute

13. Speed of sound _______ with increase in temperature

(a) Increase

(b) Remain same

(c) Decrease

(d) May increase or decrease

► (a) Increase

14. The sound of frequency more than 20,000Hz is called

(a) Longitudinal sound

(b) Audible sound

(c) Infrasound

(d) Ultrasound

► (d) Ultrasound

15. Which of the following frequencies cannot be heard by human beings?

(a) 1000 Hz

(b) 10,000 Hz

(c) 100 Hz

(d) 1,00,000 Hz

► (d) 1,00,000 Hz

16. Which of the following produces sound in birds?

(a) Vocal cords

(b) Larynx

(c) Glottis

(d) Syrinx

► (d) Syrinx

17. The pitch of sound depends on the ______of the vibrating body.

(a) amplitude

(b) noise

(c) frequency

(d) medium of propagation

► (c) frequency

18. Pitch of sound depends upon

(a) Wavelength

(b) Time-period

(c) Amplitude

(d) Frequency

► (d) Frequency

19. The nature of sound waves is

(a) Longitudinal wave

(b) Transverse wave

(c) Electromagnetic wave

(d) Mechanical wave

► (a) Longitudinal wave

20. A person can hear an approaching train when he presses his ear to the railway track faster than one who simply stands on the tracks. What makes this possible?

(a) The vibration of railway tracks

(b) The vibration of air

(c) The speed of sound in solids is more

(d) The hearing ability of the man

► (c) The speed of sound in solids is more

21. Sound is produced by

(a) Heating

(b) Moving

(c) Cooling

(d) Vibration

► (d) Vibration

22. Identify the nerve that carries the signals from the ear to the brain.

(a) The auditory nerve

(b) The optic nerve

(c) The motor nerve

(d) The spinal cord

► (a) The auditory nerve

23. The SI unit of frequency is

(a) Lambda

(b) Hertz

(c) Meter

(d) Decibel

► (b) Hertz

24. Range of audible sound is

(a) More than 20,000Hz

(b) Less than 20Hz

(c) 20Hz to 20,000 Hz

(d) More than 20Hz

► (c) 20Hz to 20,000 Hz

25. One of the most common well-known periodic motion is that of

(a) Quartz clock

(b) Sundial

(c) Simple pendulum

(d) Digital clock

► (c) Simple pendulum

26. The time-period is

(a) Equal to frequency

(b) Inversely proportional to frequency

(c) Proportional to wave-length

(d) Proportional to frequency

► (b) Inversely proportional to frequency

Hope the given MCQ Questions will help you in cracking exams with good marks. These Sound MCQ Questions will help you in practising more and more questions in less time.

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