Science Quiz Based on NCERT

Dear Readers, Today We are providing you a quiz based on NCERT for SSC CGL 2016 and Railways.

1. In dholak sound is produced due to ...

A.stretched membrane

B.stretched strings

C.air column

D.vibration of air

2. The pitch of sound depends on the __________ of the vibrating body.

A.amplitude

B.noise

C.frequency

D.medium of propagation

3. Speed of sound in solids is ______ the speed of sound in liquids.

A.same as

B.greater than

C.less than

D.sometimes greater and sometimes less than

4. The human ear can hear sounds having frequency in range ...

A.between 200 - 20,000 Hz

B.between 20 - 2000 Hz

C.between 200 - 2000 Hz

D.between 20 - 20,000 Hz

5. The time taken to complete ___ oscillation(s) is called time period.

A.one

B.ten

C.two

D.hundred

6. To and fro or back and forth motion of an object is termed as _____.

A.frequency

B.amplitude

C.vibration

D.time period

7. Vocalcords in men are about ___ long

A.20 mm

B.20 cm

C.2 mm

D.2 cm

8. Length of vocal cords of women is _____ men.

A.greater than

B.less than

C.same as

D.slightly greater than

9. Sound cannot travel in _____.

A.solids

B.liquids

C.gases

D.vacuum

10. The sound above ___ is physically painful.

A.20 dB

B.40 dB

C.60 dB

D.80 db

Answers will be provided soon