A green muffler is used to reduce which of the following?

AAir pollution

BWater pollution

CNoise pollution ✓ Correct

DSoil pollution

Correct answer: (C) Noise pollution

Explanation

A green muffler is a belt of trees planted along roads and near highways to cut noise pollution.

Its leaves and branches absorb and scatter sound waves before they reach homes.

It is not aimed at air pollution, though greenery does absorb some dust and gases.

It does not address water pollution, which needs effluent treatment instead.

It does not tackle soil pollution, which needs waste and chemical control.

Planting dense-canopy species along traffic corridors gives the best sound buffering.

Want more like this? Create a free account to practise a full test, track your progress, and get spaced-repetition review.