Sound (CBSE Class-8 Science): Questions 9 - 16 of 24

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Question number: 9

» Sound » Property of Sound » Noise and Music

MCQ▾

Question

A sound which produces a jarring effect on our ear is called as:

Choices

Choice (4) Response

a.

Musical sound

b.

Noise

c.

Music

d.

Noise pollution

Question number: 10

» Sound » Human Ear » Functioning of Human Ear

MCQ▾

Question

Three bones present in the middle ear are:

Choices

Choice (4) Response

a.

Stapes

b.

Incus

c.

Malleus

d.

All a. , b. and c. are correct

Question number: 11

» Sound » Human Ear » Functioning of Human Ear

MCQ▾

Question

Which part of ear sense the vibrations of the vibrating body?

Choices

Choice (4) Response

a.

Middle ear

b.

Cochlea

c.

Malleus

d.

Ear drum

Question number: 12

» Sound » Sound » Musical Instruments

MCQ▾

Question

Some crude musical instruments make soothing musical sound when struck with the help of a stick such as:

Choices

Choice (4) Response

a.

Ghattam

b.

Munjira

c.

Kartal

d.

All a. , b. and c. are correct

Question number: 13

» Sound » Sound » Sound Is Produced by a Vibrating Body

MCQ▾

Question

Sound is produced when:

Choices

Choice (4) Response

a.

The number of vibrations per second as perceived by a listener

b.

Intensity of sound

c.

To and fro motion of an object

d.

Any object that vibrates mechanically produces sound

Question number: 14

» Sound » Sound » Sound Is Produced by a Vibrating Body

MCQ▾

Question

Audible range of frequency is:

Choices

Choice (4) Response

a.

Below 20 Hz

b.

Above 20, 000Hz

c.

20 Hz to 20, 000Hz

d.

Above 20 KHz

Question number: 15

» Sound » Property of Sound » Audible and Inaudible Sound

MCQ▾

Question

The sound which a normal human can hear is called as:

Choices

Choice (4) Response

a.

Audible sounds

b.

Inaudible sounds

c.

All of the above

d.

Question does not provide sufficient data or is vague

Question number: 16

» Sound » Property of Sound » Hearing Impairment

MCQ▾

Question

Ear protectors must be used by the:

Choices

Choice (4) Response

a.

Pneumatic drill operators

b.

Factory workers

c.

Tractors drivers

d.

All a. , b. and c. are correct

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