We have completed the NCERT/CBSE chapter-wise Multiple Choice Questions for Class 8 Science book Chapter 13 Sound with Answers by expert subject teacher for latest syllabus and examination. You can Prepare effectively for the exam taking the help of the Class 8 Science Objective Questions PDF free of cost from here. Students can take a free test of the Multiple Choice Questions of Sound. Each Questions has four options followed by the right answer. Download the Science Quiz Questions with Answers for Class 8 free Pdf and prepare to exam and help students understand the concept very well.
MCQ Questions for Class 8 Science with Answers
Q1. Voice of which of the following is likely to have minimum frequency:
(i) baby girl
(ii) baby boy
(iii) a man
(iv) a woman
(i) baby girl
Q2. Sound is a kind of
(i) work
(ii) energy
(iii) force
(iv) pressure
(ii) energy
Q3. 1 hertz is equal to
(i) 1 vibration per minute
(ii) 10 vibrations per minute
(iii) 600 vibrations per minute
(iv) 60 vibrations per minute
(iv) 60 vibrations per minute
Q4. The hearing range of human ear is
(i) 20 Hz to 20,000 Hz
(ii) less than 20 Hz
(iii) more than 20,000 Hz
(iv) 20 Hz to 25,000 Hz
(i) 20 Hz to 20,000 Hz
Q5. Sound cannot travel through
(i) vacuum
(ii) air
(iii) water
(iv) solids
(i) vacuum
Q6. The shape of the outer part of human ear is like a
(i) Drum
(ii) Frustum
(iii) Funnel
(iv) Dumbbell
(iii) Funnel
Q7. A shehnai produces sound from:
(i) vibrating strings
(ii) vibrating membrane
(iii) vibrating air column
(iv) none of these
(iii) vibrating air column
Q8. Pitch of sound is determined by its
(i) frequency
(ii) speed
(iii) amplitude
(iv) loudness
(i) frequency
Q9. Eardrum is a part of:
(i) Sound producing organ
(ii) Skeletal system
(iii) Hearing organ
(iv) Reproductive organ
(iii) Hearing organ
Q10. The frequency of subsonic sound is
(i) more than 20 Hz
(ii) 100 Hz
(iii) less than 20 Hz
(iv) more than 20,000 Hz
(iii) less than 20 Hz
Q11. The number of oscillations per second is called
(i) Amplitude of oscillation
(ii) Pitch of oscillation
(iii) Frequency of oscillation
(iv) None of the above
(iii) Frequency of oscillation
Q12. Damage to which of the following parts of ear cause hearing impairment?
(i) Pinna
(ii) Oval window
(iii) Tympanic membrane
(iv) Ear canal
(iii) Tympanic membrane
Q13. Frequency of oscillations is:
(i) the number of oscillations per minute
(ii) the number of oscillations per hour
(iii) the number of oscillations per second
(iv) none of these
(iii) the number of oscillations per second
Q14. Cochlea is a part of
(i) hearing organ
(ii) sound producing organ
(iii) muscular organ
(iv) air pollution
(i) hearing organ
Q15. Sound propagates maximum in
(i) gas
(ii) liquid
(iii) solid
(iv) all
(iii) solid
Q16. The sound in the audible range is called
(i) ultrasonic sound
(ii) sonic sound
(iii) subonic sound
(iv) light sound
(ii) sonic sound
Q17. Human can hear sound in the range of
(i) 200-2000 Hz
(ii) 20-20,000 Hz
(iii) 2-20000 Hz
(iv) 2000-200000 Hz
(ii) 20-20,000 Hz
Q18. Large amplitude of sound vibrations will produce:
(i) Loud sound
(ii) Meak sound
(iii) Slow sound
(iv) Shreak
(i) Loud sound
Q19. When the amplitude is small, the sound produced is:
(i) loud
(ii) feeble
(iii) low pitched
(iv) none of these
(ii) feeble
Q20. A pendulum oscillates 20 times in 4 seconds. Find its time period.
(i) 0.05 sec.
(ii) 0.001 sec.
(iii) 0.2 sec.
(iv) 0.1 sec.
(iii) 0.2 sec.
Q21. Noise pollution is harmful for
(i) human
(ii) cat
(iii) bird
(iv) all of those
(iv) all of those
Q22. The number of vibrations made by a vibrating body in one second is
(i) frequency
(ii) noise
(iii) loudness
(iv) pitch
(i) frequency
Q23. Voice box or larynx of human process
(i) Sound
(ii) Wind
(iii) Loudness
(iv) None of the options
(i) Sound
Q24. The sound of frequency more than 20,000Hz is called
(i) Longitudinal sound
(ii) Audible sound
(iii) Infrasound
(iv) Ultrasound
(iv) Ultrasound
Q25. Noise pollution causes:
(i) lack of sleep
(ii) hypertension
(iii) anxiety
(iv) all of these
(iv) all of these
Q26. The number of vibrations made by a vibrating body in one second is
(i) frequency
(ii) noise
(iii) loudness
(iv) pitch
(i) frequency
Q27. Sound of single frequency is called a
(i) Noise
(ii) Tone
(iii) Note
(iv) Music
(ii) Tone
Q28. The velocity of sound at 20°C is approximately
(i) 3400 m/sec.
(ii) 340 m/sec.
(iii) 430 m/sec
(iv) 304 m/sec.
(ii) 340 m/sec.
Q29. The nature of sound waves is
(i) Longitudinal wave
(ii) Transverse wave
(iii) Electromagnetic wave
(iv) Mechanical wave
(i) Longitudinal wave
Q30. Number of vocal cords in human is:
(i) one
(ii) two
(iii) four
(iv) none of these
(ii) two
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