Class 8 Science Chapter 13 MCQ

Class 8 Science Chapter 13 MCQ (Multiple Choice Questions) of Sound for CBSE and State board students prepared for new academic session 2021-2022 free to use. All the contents are prepared from latest NCERT Books issued for new academic session 2021-22.

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 13.

Class 8 Science Chapter 13 MCQ for 2021-2022

Class: 8Science
Chapter: 13Sound
Contents: MCQ Online Tests

MCQ Tests with Answers for Class 8 Science Chapter 13

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

Pitch of sound is determined by its

[A]. Frequency
[B]. Amplitude
[C]. Speed
[D]. Loudness
Q3

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.
Q4

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




Q5

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.
Q6

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




Q7

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
Q8

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.



Q9

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.
Q10

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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