Class 8 Science Chapter 10 MCQ (Multiple Choice Questions) of Sound for CBSE and State board students prepared for new academic session 2025-26 free to use. All the contents are prepared from latest NCERT Books issued for new academic session 2025-26. Now a days MCQs are important part of question papers in exams. These MCQ contains all the important extra questions covering the complete chapter of NCERT Book class 8 Science chapter 10.
Class 8 Science Chapter 10 MCQ
Class: 8 | Science |
Chapter: 10 | Sound |
Contents: | MCQ Online Tests |
Academic Session: | 2025-26 |
MCQ Tests with Answers for Class 8 Science Chapter 10
Q1
In order to reduce the loudness of a sound, we have to:
[A]. Decrease its frequency of vibration of the sound.
[B]. Increase its frequency of vibration of the sound.
[C]. Decrease its amplitude of vibration of the sound.
[D]. Increase its amplitude of vibration of the sound.
Q2
Recently, in a science class test, you are asked a question where you have to say whether the statements are correct or not?
[A]. Sound is a form of energy which makes us hear.
[B]. Sound is produced by vibrating objects.
[C]. Sound is produced by different objects but human cannot produce sound.
[D]. The vibration of the sound producing object are so small that we cannot see them easily.
Q3
Loudness of sound is measured in units of
[A]. Decibel (dB)
[B]. Hertz (Hz)
[C]. Metre (m)
[D]. Metre/second (m/s)
Q4
The loudness of sound is determined by its:
[A]. Amplitude of vibration
[B]. Ratio of amplitude and frequency of vibration
[C]. Frequency of vibration
[D]. Product of amplitude and frequency of vibration
Q5
Pitch of sound is determined by its
[A]. Frequency
[B]. Amplitude
[C]. Speed
[D]. Loudness
Q6
Which of the following statement is or are incorrect?
[A]. Sound can travel through solids, liquids and gases.
[B]. The sound of ringing telephone bell travels to us through the air in the room.
[C]. Sound cannot travel through vacuum because vacuum has no molecules which can vibrate and carry sound waves.
[D]. None of the above.
Q7
Ultrasound has frequency of vibration:
[A]. Between 20 and 20,000 Hz
[B]. Below 20 Hz
[C]. Above 20,000 Hz
[D]. Between 500 and 10,000 Hz
Q8
Puja is writing some statements but she confused to know whether the statements are correct or not? If you know the answer to this question, then tell her:
[A]. Most of the sounds which we hear in our everyday life reach us through the air.
[B]. Sound cannot be heard on the surface of moon because there is no air to carry the sound waves.
[C]. The astronauts who land on moon, talk to each other through wireless sets using radio waves.
[D]. Sound can be heard on the moon but only the 1/6th part of the total sound.
Q9
In which of these medium can sound travel?
[A]. Wood and Water
[B]. Wood and Water and Air
[C]. Air and Vacuum
[D]. Water and Air and Vacuum
Q10
An object is vibrating at 50 Hz. What is its time period?
[A]. 0.02 s
[B]. 2 s
[C]. 0.2 s
[D]. 20 s
Q11
Lighting can be seen at the moment when it occurs. Paheli observes lighting in her area. She hears the sound 5 seconds after she observed lighting. How far is she from the place where lightning occurs?
[A]. 1.56 km
[B]. 1.65 km
[C]. 16.5 km
[D]. 15.6 km
Q12
Read the following sentences carefully, and choose the incorrect one:
[A]. [A] The speed of sound in air is 340 meters per second.
[B]. The speed of sound in water is 1500 meters per second.
[C]. Sound travels at a speed of 5000 metres per second through iron or steel.
[D]. None of the above.
Q13
Read the following sentences carefully, and choose the incorrect one:
[A]. [A] Sound travels about 15 times faster in steel than in air.
[B]. Sound travels faster in wood than in air.
[C]. Sound travels faster in wood than in water.
[D]. None of the above.
Q14
Which of the following sound frequencies can be heard by a woman having a normal hearing range?
[A]. 25000 Hz and 15 kHz
[B]. 15 kHz and 40000 Hz
[C]. 15 kHz and 25 Hz
[D]. 25 Hz
Q15
Choose the statements which are correct to measure to control noise pollution:
[A]. The bursting of crackers should be avoided
[B]. We should not play a television, radio, stereo-system too loudly.
[C]. The too loud horns of motor vehicles should not be blown unnecessarily.
[D]. All the above.
Q16
Before playing the orchestra is in a musical concert a sitarist tries to adjust the tension and pluck the string suitably. By doing so he is adjusting:
[A]. Intensity of the sound only
[B]. Amplitude of the sound only
[C]. Frequency of the sitar string with the frequency of other musical instruments
[D]. Loudness of the sound
Q17
A key of mechanical piano is first struck gently and then struck again but much harder this time. In the second case:
[A]. Sound will be louder but pitch will not be different
[B]. Sound will be louder and the pitch will also be higher
[C]. Sound will be louder but pitch will be lower
[D]. Both loudness and pitch will remain unaffected
Q18
Badal appeared in class test but he confused to know the correct statement. Would you help him to know that?
[A]. Stringed musical instruments produce musical sounds by the vibration of a stretched string.
[B]. Wind musical instruments produce musical sound by the vibration of air columns inside them.
[C]. Membrane type musical instruments produce sound by the vibration of thin stretched membranes.
[D]. All the above.
Q19
Read the following sentences carefully, and choose the correct one:
[A]. Manjira is a plate type musical instrument.
[B]. Mridangam, table, dholak are the examples of membrane type musical instrument.
[C]. Bansuri, trumpet, shehnai are the examples of musical wind instrument.
[D]. All the above.
Q20
In a quiz competition, you are asked a question where you have to choose the statement which is/ are incorrect?
[A]. Ultrasound is used to study the growth of foetus inside the mother’s womb.
[B]. Ultrasound is used to measure the depth of sea or ocean and also used to locate underwater objects.
[C]. Ultrasound is used in the treatment of muscular pain and a disease called arthritis which is inflammation of joints.
[D]. None of the above.
Q21
Recently, in a science class test, you are asked a question where you have to say whether the statements are correct or not?
[A]. The sounds of frequencies less than 20 hertz are called infrasonic.
[B]. The range of audible frequency of sound for human hearing is from 20 hertz to 20000 Hertz.
[C]. The sound of frequencies greater than 20,000 hertz are called ultrasonics.
[D]. All the above.
Q22
Consider the following statements and choose the correct one:
[A]. The pitch of a sound depends on the frequency of vibration.
[B]. If the frequency of vibration is low, the sound produced has a low pitch.
[C]. If the frequency of vibration is high, the sound produced has a high pitch.
[D]. All the above.
Q23
Which of the following modes is utilized in the production of sound by humans?
[A]. Vibrating membranes.
[B]. Vibrating plates.
[C]. Vibrating strings.
[D]. Vibrating air columns.
Q24
In a science quiz competition, Payel is asked a question where she had to choose the statement which was/were incorrect?
[A]. The voice of a woman is shriller than that of a man.
[B]. The voice of a small baby is even more shrill than that of a woman.
[C]. As the frequency of vibration of an object increases, the pitch or shrillness of sound produced by it also increases.
[D]. None of the above.
Q25
Which of the following statement is or are incorrect?
[A]. The number of vibrations made in one second is called the frequency of vibration.
[B]. When an object makes one vibration per second, its frequency is said to be 1 hertz.
[C]. The loudness of sound depends on the amplitude of vibrations of the vibrating object.
[D]. All the above.
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Last Edited: June 12, 2023