General Science #22 Multiple Choice Questions

GENERAL SCIENCE #22

MULTIPLE CHOICE QUESTIONS

1. The voice box is also called as which of the following?

(a) Heart

(b) Larynx

(c) Mouth

(d) Stomach

Answer: (b)

2. Sound is a kind of which of the following?

(a) Energy

(b) Force

(c) Pressure

(d) Work

Answer: (a)

3. What is the hearing range of human ear?

(a) Less than 20 Hz

(b) 20 Hz to 20,000 Hz

(c) 20 Hz to 25,000 Hz

(d) More than 20,000 Hz

Answer: (b)

4. Pitch of sound is determined by its ……………

(a) speed

(b) amplitude

(c) loudness

(d) frequency

Answer: (d)

5. What is the frequency of subsonic sound?

(a) Less than 20 Hz

(b) More than 20 Hz

(c) 100 Hz

(d) More than 20,000 Hz

Answer: (a)

6. Cochlea is a part of which of the following?

(a) Sound producing organ

(b) Muscular organ

(c) Air pollution

(d) Hearing organ

Answer: (d)

7. 1 hertz is equal to ……………

(a) 1 vibration per minute

(b) 10 vibrations per minute

(c) 60 vibrations per minute

(d) 600 vibrations per minute

Answer: (c)

8. Sound cannot travel through which of the following?

(a) Water

(b) Air

(c) Vacuum

(d) Air

Answer: (c)

9. What is called the sound in the audible range?

(a) Sonic sound

(b) Subsonic sound

(c) Light sound

(d) Ultrasonic sound

Answer: (b)

10. Speed is ……………

(a) Distance travelled/time

(b) Time/distance travelled

(c) Distance travelled x time

(d) Distance travelled + time

Answer: (a)

11. A pendulum oscillates 20 times in 4 seconds. Find its time period.

(a) 0.001 sec

(b) 0.05 sec

(c) 0.1 sec

(d) 0.2 sec

Answer: (d)

12. Loudness of sound is determined by which of the following?

(a) Frequency

(b) Amplitude

(c) Time period

(d) Pitch

Answer: (b)

13. What is called the number of vibrations made by a vibrating body in one second?

(a) Noise

(b) Loudness

(c) Pitch

(d) Frequency

Answer: (d)

14. What is called the maximum displacement of a body from its mean position?

(a) Oscillation

(b) Periodic motion

(c) Frequency

(d) Amplitude

Answer: (d)

15. The velocity of sound at 20°C is approximately which of the following?

(a) 304 m/sec

(b) 340 m/sec

(c) 430 m/sec

(d) 3400 m/sec

Answer: (b)

16. Sound is produced by which of the following?

(a) Vibrating objects only

(b) Non-Vibrating objects only

(c) Vibrating and non- vibrating objects

(d) Vibration has no relation to sound

Answer: (a)

17. Vibration is also known as which of the following?

(a) Translatory motion

(b) Oscillatory motion

(c) Vibratory motion

(d) None of the above

Answer: (b)

18. Frequency is expressed in which of the following?

(a) Hertz

(b) Gram

(c) Degree centigrade

(d) Kilometre

Answer: (a)

19. What is called the number of oscillations per second?

(a) Pitch of oscillation

(b) Frequency of oscillation

(c) Amplitude of oscillation

(d) None of the above

Answer: (b)

20. Why voice of man is heavy compared to a woman?

(a) Male vocal cord is shorter

(b) Male vocal cord is longer

(c) Female vocal cord is longer

(d) The concept is not related

Answer: (b)