Which of the following is NOT the main cause of noise pollution?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → Combustion of fossil fuels
Option (1) Mechanised construction work — A cause of noise pollution. Machines used in construction and demolition make loud noise.
Option (2) Automobiles — A cause of noise pollution. Traffic noise is the biggest nuisance among all sources.
Option (3) Loudspeakers used in various festivals — A cause of noise pollution. They add periodic but polluting noise.
Option (4) Combustion of fossil fuels — Not a cause of noise pollution. Burning coal and oil releases toxic gases. It is a main source of air pollution.
NCERT (2026-27): “Noise Pollution … The main sources of noise pollution are various factories, mechanised construction and demolition works, automobiles and aircraft, etc. There may be added periodical but polluting noise from sirens, loudspeakers used in various festivals, programmes associated with community activities.” “Air Pollution … With increasing use of varieties of fuels as the source of energy, there is a marked increase in emission of toxic gases into the atmosphere resulting in the pollution of air. Combustion of fossil fuels, mining and industries are the main sources of air pollution.” |