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)
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