Breathing air polluted with carbon monoxide (CO) is dangerous, because—
- ACO combines with oxygen in the blood
- BCO combines with haemoglobin
- CCO removes water from the body and causes dehydration
- DCO causes the deposition of proteins in the body
- ENone of the above/More than one of the above
Show answer and explanation
Correct answer: (b) CO combines with haemoglobin
Explanation
Breathing air polluted with carbon monoxide is dangerous because it combines with haemoglobin and disrupts blood circulation, which can lead to death. Carbon monoxide is a colorless and odourless gas, emitted from the burning of fuels in motor vehicles and furnaces.