Class 8 Science Chapter 10 MCQ (Multiple Choice Questions) of Sound for CBSE and State board students prepared for new academic session 2024-25 free to use. All the contents are prepared from latest NCERT Books issued for new academic session 2024-25. 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: 8Science
Chapter: 10Sound
Contents: MCQ Online Tests
Academic Session:2024-25

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

Loudness of sound is measured in units of

[A]. Decibel (dB)
[B]. Hertz (Hz)
[C]. Metre (m)
[D]. Metre/second (m/s)
Q3

Consider the following statements and choose the correct one:

[A]. Sound is produced by the vibration of vocal cords.
[B]. The human voice box or larynx contain two ligaments known as “vocal cords”.
[C]. The human beings produce sound by using the voice box which is called larynx.
[D]. All the above.
Q4

1 hertz is equal to:

[A]. 1 vibration per minute
[B]. 10 vibrations per minute
[C]. 60 vibrationsper minute
[D]. 600 vibrations per minute
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

Which of the following statements are correct?

[A]. Sound is produced by vibration and sound requires a medium for propagation.
[B]. Sound is produced by vibration and sound requires a medium for propagation and light and sound both requires a medium for propagation.
[C]. Sound requires a medium for propagation and light and sound both requires a medium for propagation and sound travel slower than light.
[D]. Sound is produced by vibration and sound requires a medium for propagation and sound travel slower than light.
Q9

The loudness of sound depends on:

[A]. Its amplitude
[B]. Its time period
[C]. Its frequency
[D]. Its speed
Q10

A simple pendulum makes 10 oscillation in 20 seconds. What is the time period and frequency of its oscillations?

[A]. 0.5 Hz and 2 s respectively
[B]. 0.1 Hz and 0.5 s respectively
[C]. 0.2 Hz and 3 s respectively
[D]. 0.3 Hz and 4 s respectively
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

In a quiz competition, you are asked a question where you have to choose the statement which is/ are incorrect?

[A]. The outer part of ear is called “pinna”.
[B]. The inner part of ear has a coiled tube called “cochlea”.
[C]. The three tiny bones in the ear act as a system of levers and sound vibration passing them on the brain.
[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

Consider the following statements and choose the incorrect one:

[A]. Partial hearing loss can also be caused by noise pollution.
[B]. Partial hearing loss is generally due to an illness, infection, injury or old age.
[C]. Hearing Aid is a small sound amplifying device worn on the ear by any deaf person.
[D]. None of the above
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

Choose the statements which are incorrect about noise pollution:

[A]. Loud noise can cause irritation and headache.
[B]. Loud noise can even damage the ears permanently and cause deafness.
[C]. Loud noise can cause an ailment called hypertension or high blood pressure.
[D]. Loud noise gives energy to all young persons including teenag
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

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.
Q19

The ultrasound waves can penetrate into matter to a large extent because they have:

[A]. Very high speed
[B]. Very high frequency
[C]. Very high quality
[D]. Very high amplitude
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

We can distinguish between the musical sounds produced by different singers on the basis of the characteristic of sound called:

[A]. Frequency
[B]. Timbre
[C]. Pitch
[D]. Loudness
Q22

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.
Q23

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.
Q24

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.
Q25

The sound from a mosquito is produced when it vibrates its wings at the average rate of 500 vibration per second. What is the time period of the vibration?

[A]. 0.002 seconds
[B]. 0.02 seconds
[C]. 0.2 seconds
[D]. 2.0 seconds

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Last Edited: June 12, 2023