Noise Pollution

Q.

What is the meaning of OH, VH, and HH?

Q.

Which one is not a vestigial organ in man?

1. Vermiform appendix

2. Epiglottis

3. Muscles of ear pinna

4. Nictitating membrane

Q.

Look at a cartoonist's presentation of a kind of pollution given below.

(i) Name the kind of pollution.

(ii) List the sources of pollution.

(iii) Mention any two harmful effects of this pollution.

Q.

_______is the unwanted/undesirable _______.

1. Noise , sound

2. Sound, noise

3. Decibels, sound

4. Noise, decibels

Q.

The annoying sound produced after burning crackers is known as ___ .

1. normal sound

2. noise

3. soothing sound

4. music

Q.

Sound levels lower than 80 dB are not harmful to the ears.

1. True
2. False

Q.

Write ten slogans on eco-friendly Diwali.

Q.

What are:

1. Ultrasonic wave.
2. supersonic speed

Q.

How does noise pollution affect the health of an individual ?

Q.

Which of the following ranges of frequencies is audible to the human ear?

1. 20KHz to 20MHz

2. 20Hz to 20KHz

3. 10Hz to 10KHz

4. 10MHz to 10MHz

Q.

Loudspeaker announcements, blowing of horns and burning of crackers cause ___ pollution.

Q.

Decibel is a standard abbreviation used for the quantitative expression of

1. a certain pesticide

2. the density of bacteria in a medium

3. the dominant bacillus in a culture

4. sound

Q. Sound becomes hazardous noise pollution at decibels
(a) above 30
(b) above 80
(c) above 100
(d) above 120

Q.

Intensity of sound in normal conservation is

1. 120-150 dB

2. 70-99 dB

3. 30-60 dB

4. 10-20 dB

Q.

Sound is measured in _______.

1. Tesla

2. Decibels

3. Candela

4. Amperes

Q. Assertion :A brief exposure to extrernely high sound level, 150dB or more generated by take off of a jet plane or rocket, may damage ear drum or dislocate ear ossicles and permanently impair the hearing ability. Reason: In India, the Air (prevention and Control of Pollution) Act came into force in 1981, but was amended in 1987 to include noise as an air pollutant.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. Write any two slogans to reduce sound pollution.

Q. A disease caused by the noise pollution is

1. Anaemia
2. Insomnia
3. Edema
4. None of the above

Q. Sound becomes hazardous noise pollution at level above ______ dB.

1. 30
   
2. 80
   
3. 100
   
4. 120
   

Q.

Noise pollution ______ the efficiency of work.

Q. Write the four causes of noise pollution and explain the control of noise pollution.

Q. Noise pollution is measured in

1. Hertz
2. Fathoms
3. Nanometres
4. Decibels

Q. State the following statement is true or false:

1. A-T, B-T, C-T
2. A-T, B-F, C-T
3. A-F, B-T, C-T
4. A-F, B-F, C-T

Q. Sound becomes a hazardous noise pollution, if its level is above

1. 80 dB
2. 30 dB
3. 150 dB
4. 120 dB

Q. State whether the following statements are true of false:
(i) Urbanisation with faster modes of transport have contributed to pollution.
(ii) Any unwanted sound, even if it is music next door, is noise.
(iii) People who are used to work in noisy place are not affected by noise.
(iv) Underground water is non-polluted and safe.
(v) Pollutants are the substances that cause pollution.
(vi) SPM stands for Smart Particular Material.

Q. State any four measures to control noise pollution.

Q.

Noise pollution affects our health by causing which of the following?​

1. Impairment of hearing

2. Lack of sleep

3. Hypertension

4. All of the above

Q.

1. (i) and (ii) only
2. (ii) and (iii) only
3. (iii) and (i) only
4. (i), (ii) and (iii)

Q. A uniform wire of length L and mass M is stretched between two fixed point, keeping a tension F.A sound of frequency u impressed on it. Then the maximum vibrational energy is existing in the wire when u =

Q. How does sound pollution effect Bio diversity? Explain.