Question 41
PollutionA constituent of the exhaust gases of motor vehicles which causes serious air pollution is
- A.water vapour
- B.carbondioxide
- C.carbon monoxide
- D.oxygen
- E.ozone
Show the answer and explanation
Answer: C (carbon monoxide)
Explanation
Carbon monoxide from car exhaust is poisonous: it combines with haemoglobin and stops it carrying oxygen.