9.
d. Carbon monoxide
Which of the following is not an air pollutant?
a. Carbon monoxide
b. Oxides of nitrogen and sulphur
C. cfc
d. Oxygen
Answers
Answered by
2
Answer:
Which of the following is not an air pollutant?
d. Oxygen
Answered by
2
(oxygen is not an air pollutant)
option d is correct
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