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WorksheetsRevision_Exam
Total questions: 25
Worksheet time: 17mins
What is the dependence factor of the degree of hearing loss?
variation in noise
Intensity of noise
Time
Duration of noise
Which pollution causes hearing loss in organisms?
Water Pollution
Sound Pollution
Noise Pollution
Air Pollution
What are the effects of Noise pollution?
Diabetes
Hypertension and Sleep disturbance
Lung infection
Asthma
Which broad classifications of noise are most challenging to treat?
Noise generated in the receiver
Noise generated in the transmitter
External noise
Internal noise
What is Psychoacoustic?
The study of perception of environmental quality
The study of perception of surrounding environment
The study of perception of noise pollution
The study of perception of sound
Which one is not a correct point for the definition of offensive noise?
Inherently offensive characteristics
Level
Audibility
Duration
What is L90 noise?
The noise level exceeded 90% of the time of measurement duration.
the noise level below 10% of the time of the measurement duration.
the noise level exceeded 10% of the time the measurement duration
the noise level below for 90% of the time of the measurement duration
Which one is not a fundamental step for noise pollution?
Path
Source
Receiver
Detector
Which Ministry published a draft of Noise Pollution Rules?
Ministry of Public Affairs
Ministry of Environment and Forests
Ministry of Industries
Ministry of Home Affairs
Which one is an incorrect point for the possible types of sound absorbing materials?
Wood wool board
Honeycomb sheet
Pulp boards
Acoustic plaster
How do you define the suitable methods to reduce the Roadways noise?
no signal alteration of roadway surface texture
Unlimited vehicle speed and movement
Avoid the tree plantation along the road
Use of noise barriers
How do you define the day night equivalent values of sound level?
Ldn
Lnd
L10
L50
What is the type of sound-absorbing material?
Low cavity resonators
Porous material
Perforated
Permeable material
Which one is the correct point for L50 noise?
the noise level below 50% of the time of the measurement duration.
the noise level exceeded 0.50% of the time of the measurement duration.
The noise level exceeded 50% of the time of the measurement duration.
the noise level below for 0.005% of the time of the measurement duration.
Which one is not a noise reduction method?
The use of creativity in house and office layout
Lubrication and better maintenance of machines
Soundproofing
Avoiding noise pollution sources
What are Ambient air quality standards in respect of noise for industrial areas?
75 dBA
40 dBA
33 dBA
50 dBA
What are Ambient air quality standards in respect of noise for silence zones?
50 dB
40 dB
30 dB
20 dB
When can a person complain to the police regarding noise pollution level?
When the ambient noise standards exceed by 50 dB
When the ambient noise standards exceed 30 dB
When the ambient noise standards exceed 10 dB
When the ambient noise standards exceed 20 dB.
Which one is not the correct point for percentile levels that are used greatly when measuring environmental noise?
L20
L10
L50
L90
How do you define OSHA?
Occupational Safety and Human Administration
Occupational Safety and Health Assembly
Occupational Safety and Health Association
Occupational Safety and Health Administration
How do you define the NGO?
Nine government organization
Non-Gained Organization
Non-Grade Organization
Non-Governmental Organization
Which one is a correct point for good sound absorbent from the following?
Vermin proof
Fire-resistant
.Durable
Low coefficient
Which one is an incorrect point for noise pollution control techniques?
Public education and awareness
Sound adsorption
Sound absorption
Sound insulation
Which one is an incorrect point for the noise management program?
Assessment and corrective action
Deposition for future reference
Periodic review
Continual improvement
How do you define the L10 noise?
The noise level exceeded 10% of the time of the measurement duration.
the noise level below 90% of the time of the measurement duration.
the noise level exceeded 0.10% of the time of the measurement duration.
the noise level below 0.001% of the time of the measurement duration.
