CH-345
Air pollutants
Chemistry · Secondary 3 · Medium · Air pollutants
During incomplete combustion of petrol in car engines, carbon monoxide is released into the air. Which statement best explains why carbon monoxide is dangerous to humans?
- It combines with haemoglobin and reduces oxygen transport in blood.
- It reacts with rainwater to form strong acids that corrode buildings.
- It increases the ozone layer thickness, blocking harmful radiation.
- It neutralises carbon dioxide in the lungs, forming harmless gases.
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