Environment & Ecology · Air Pollution
Which of the following statements about carbon monoxide (CO) is true?
- 1It stimulates the oxygen-carrying capacity of hemoglobin.
- 2It is primarily produced as a result of incomplete combustion of fossil fuels.✓
- 3It is characterized by a strong, foul pungent smell.
- 4It is completely harmless to human beings.
Correct answer
It is primarily produced as a result of incomplete combustion of fossil fuels.
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