Q. 355.0( 1 Vote )

Which of the following will be reduced in air in a city forest when a lot of dust and fly ash in emitted by a coal-based factory in the vicinity?
A. nitrogen

B. carbon dioxide

C. oxygen

D. water vapour

Answer :

The various air pollutants discharged by motor vehicle and by the burning of fossil fuel in a factory are carbon dioxide, carbon monoxide, nitrogen oxides and smoke. It results in the decrease in the amount of oxygen in the air.

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