Environmental Engineering (3160611) MCQs

MCQs of Air and noise pollution

Showing 1 to 10 out of 27 Questions
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1.

 What is noise?

(a)

Desirable sound
(b)

Desirable and unwanted sound
(c)

Undesirable and unwanted sound
(d)

Undesirable and wanted sound
Answer:

Option (c)

2.

In which unit sound is measured?

(a)

Kilometer
(b)

Pascal
(c)

Kilogram
(d)

 Decibel
Answer:

Option (d)

3.

Which pollution cause hearing loss in organisms?

(a)

Which pollution cause hearing loss in organisms?
(b)

Noise pollution
(c)

Water pollution
(d)

Soil pollution
Answer:

Option (b)

4.

What is the dB of a threshold of hearing?

(a)

0
(b)

10
(c)

50
(d)

100
Answer:

Option (a)

5.

At what decibel instantaneous rupture of membrane happens?

(a)

100
(b)

120
(c)

146
(d)

150
Answer:

Option (d)

6.

What is the ambient noise level in the residential one during night time?

(a)

40 dB
(b)

45 dB
(c)

50 dB
(d)

55 dB
Answer:

Option (b)

7.

What is called for a temporary hearing loss?

(a)

Temporary ear pain
(b)

Temporary hearing problem
(c)

Temporary threshold shift
(d)

Temporary hearing shift
Answer:

Option (c)

8.

What is the permissible noise limit of 120 db?

(a)

30 minutes
(b)

2 minutes
(c)

1 minute
(d)

30 seconds
Answer:

Option (d)

9.

At what level a sound becomes physical pain?

(a)

Above 50 dB
(b)

Above 70 dB
(c)

 Above 80 dB
(d)

Above 100 dB
Answer:

Option (c)

10.

Which of the following sound is pleasant to our ears?

(a)

Heavy machinery
(b)

Transportation equipment
(c)

 Loud noise
(d)

Music
Answer:

Option (d)

Showing 1 to 10 out of 27 Questions
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