Which of the following are primary air pollutants? – McqOptions

MCQOPTIONS

1.	Which of the following are primary air pollutants?
A.	Sulphur dioxide and Nitrogen oxides
B.	Ozone and carbon monoxide
C.	Sulphur dioxide and Ozone
D.	Nitrogen oxide and Ozone
Answer» B. Ozone and carbon monoxide

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