Question

State any four measures to control noise pollution.

Answer 1

Hint: Noise is a high level of sound that is undesirable. The pollution caused by noise is generally defined as regular exposure to an undesirable high level of sound that can lead to adverse effects in humans or other living beings.

Complete answer:
To control noise pollution, certain measures have been employed. Four of these measures that help in controlling noise pollution are as follows:
- Suppression of the noise at the source.
This can be achieved by:
-Installing machines that make noise in sound-proof chambers.
-Using silencers to control the noise produced from automobiles, exhausts, etc.
-Designing, fabricating, and using machines that do not make noise and replacing the noisy machines with these quiet machines.
-Covering the machine parts that produce noise with sound-absorbing materials to check the noise pollution.
-Acoustic zoning.
The distance between the source of noise and the receiver must be increased by zoning the industrial areas, bus terminals, railway stations, etc.. away from the residential areas. Also, there must be silence zones near the educational areas and the hospital areas.
-Planting of trees.
Planting of trees along the roads, hospitals, educational, and residential areas can also help in minimizing noise pollution to a considerable extent.
-Legislative measures.
Strict measures of the law need to be enforced to help minimize the level of noise pollution. 

These measures include:
-A separate Noise Pollution Act must be framed.
-Banning of pressure horns in automobiles.
-The time limit must be enforced to avoid the usage of loudspeakers and amplifiers after that prescribed time.

Note:
Noise pollution is the pollution that is encountered so constantly that we even fail to notice it anymore. The sources of noise pollution are sounds from traffic jams, construction sites, railway stations, household equipment, etc. This pollution can be hazardous to our health in various ways i.e., causing hypertension, hearing loss, sleep disturbances, dementia, and many more.