Noise Pollution

Q.

What is meant by noise pollution ? Name one source of sound causing the noise pollution.

Q.

What is the safe limit of sound level in dB for our ears?

Q.

List sources of noise pollution in your surroundings.

Q.

In what respect does the wave pattern of a noise and music differ ? Draw diagram to explain your answer.

Q.

A source emits sound of frequency 600 Hz inside water. The frequency heard in air will be:

(V = 1500 m/s in water and V = 300 m/s in air).

1. 300 Hz

2. 120 Hz

3. 6000 Hz

4. 600 Hz

Q.

Define monotone.

Q.

What are the hazards of noise pollution?

Q.

Which of the following factors distinguishes a shrill sound from a flat sound?

1. Loudness

2. Timbre

3. Pitch

4. Amplitude

Q.

What is meant by noise pollution? Name one source of sound causing noise pollution

Q.

Which of the following are harmful effects caused due to noise pollution?
A. Insomnia
B. Hypertension
C. Hearing impairment

1. B and C only

2. A and B only

3. C and A only

4. A, B and C

Q.

What are the harmful effects of noise pollution on our health?

1. All of the above

2. Lack of sleep

3. Hypertension

4. Imapairment of hearing

Q.

What are the harmful effects of noise pollution?

1. Hypertension

2. Lack of sleep

3. Imapairment of hearing

4. All of the above

Q. What are the causes of noise pollution?

Q. Consider the following statement:
1. Noise pollution leads to deafness and effects mental and emotional health also.
2. There is no effect on nature due to noise pollution.
Which of the above statement is/are correct?

1. 1 only
2. both 1 and 2
3. 2 only
4. Neither 1 nor 2

Q. What are the harmful effects of noise pollution?

1. Lack of sleep

2. Hypertension

3. Imapairment of hearing

4. All of the above