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

(a) nitrogen

(b) carbon dioxide

(c) oxygen

(d) water vapour

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Solution

(c) oxygen

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Which of the following will be reduced in air in a city forest when a lot of dust and fly ash is emitted by a coal-based factory in the vicinity? (a) nitrogen (b) carbon dioxide (c) oxygen (d) water vapour

(c) oxygen

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

(a) nitrogen

(b) carbon dioxide

(c) oxygen

(d) water vapour