Which of the following statements is true?
Options:
1) Lead is the most hazardous metal pollutant of automobile exhaust.
2) The toxic effect of Carbon Monoxide is due to its greater affinity for haemoglobin as compared to oxygen.
3) Photochemical smog always contains Ozone.
4) All options are correct.
Answers
Answered by
2
Explanation:
option 4 is correct answer
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