Question

Green muffler is associated with
A. Abatement of water pollution
B. Abatement of soil pollution
C. Abatement of noise pollution
D. Abatement of air pollution

Answer 1

Hint: A muffler is otherwise called as a silencer. Mufflers are fitted in an exhaust system of many internal combustion engines. The use of mufflers in automobile systems are mandated in many countries.

Complete answer:
A muffler is designed to reduce the noise emerging from the exhaust of the automobile system. The green muffler, on the other hand, is a method that utilizes copious growth of green plants in a highly-populated area, industrial area, highways, etc., to reduce noise pollution. It is achieved by growing four to six lines of trees in the industrial areas, road-side, and other noisy areas.

Additional information:
- The trees will sieve the noise and will block the noise by reaching the people.
- The green muffler scheme encourages the cultivation of Ashoka and Neem trees close to the residencies to avoid noise pollution.
- These trees act as a wall in obstructing the noises and they can absorb noises that are in the high-frequency range.
- Evergreen shrubs also can absorb noise.
- The trees have to be planted very close to each other so that they can decrease noise pollution.
- Furthermore, the soft surface of the ground is effective to curb noise pollution. Thus, preparing the ground by adding manure is a very crucial step before cultivating plants.

So, the correct answer is that a green muffler is associated with the abatement of noise pollution.

Note: The United States Department of Agriculture states that planting trees and shrubs in proper intervals will decrease the noise by 10 decibels that can be perceived by human ears.