Air Pollution Multiple Choice Questions MCQs with Answers

1. Who was the first scientist to coin the term SMOG?
a. Nikola Tesla
b. Stephen Hawking
c. Dr. Henry Antonie
d. Nicolaus Copernicus
Answer: c. Dr. Henry Antonie

2. Which of the following are responsible for the cause of smog?
a. From incinerators
b. Emissions from vehicles
c. Fireworks
d. All of these
Answer: d. All of these

3. Which of the following is called secondary air pollutants?
a. PANs
b. Ozone
c. Carbon monoxide
d. Nitrogen dioxide
Answer: b. Ozone

4. Which of the following is called a particulate pollutant?
a. Ozone
b. Radon
c. Fly ash
d. Ethylene
Answer: c. Fly ash

5. Which statement is true about smog?
a. Smog is derived from fog
b. Smog is derived from smoke
c. Smog is derived from both fog and smoke
d. Smog is derived from water vapors
Answer: c. Smog is derived from both fog and smoke

6. Which precautions should be taken to survive when the ozone level is high?
a. Drive less
b. Stay hydrated
c. Stay indoors
d. All of these
Answer: d. All of these

7. Which of the following is true about the air quality index?
a. It indicates the color of air
b. It predicts ozone levels in area
c. It determines the intensity of sound pollution
d. It estimates sulfur content in the air
Answer: b. It predicts ozone levels in the area

8. Which is the major photochemical Smog?
a. Hydrogen peroxide
b. Chlorofluorocarbon
c. Peroxyacetyl nitrate
d. All of mentioned above
Answer: b. Chlorofluorocarbon

Recommended: Air Pollution Online Practice Test

9. Which diseases are caused by smog?
a. Rickets
b. Bronchitis
c. Breathing problems
d. All of these
Answer: d. All of these

10. DDT and aluminum cans are examples of which pollutants?
a. Primary pollutants
b. Secondary pollutants
c. Non-biodegradable pollutants
d. Biodegradable pollutants
Answer: c. Non-biodegradable pollutants

11. How many primary pollutants contribute about 90% of global air pollution?
a. Three
b. Five
c. Seven
d. Ten
Answer: b. Five

12. Which of the following is mainly responsible for the secondary pollutants?
a. Smog and ozone
b. Sulfur trioxide
c. Nitrogen dioxide
d. All of these
Answer: d. All of these

13. Which gas is more in percentage in the air?
a. Oxygen gas
b. Nitrogen gas
c. Water vapor
d. Carbon dioxide
Answer: b. Nitrogen gas

14. Which of the following is the result of the increased level of air pollution?
a. Soil erosion
b. Global warming
c. Respiratory problem
d. All of the mentioned above
Answer: c. Respiratory problem

15. Carbon monoxide (CO) is a pollutant because:
a. It reacts with O2
b. Reacts with hemoglobin
c. Reacts with Ozone
d. It inhibits glycolysis
Answer: b. Reacts with hemoglobin

16. Most of the high-level supersonic jets cause pollution by the thinning of:
a. O2 layer
b. O3 layer
c. CO layer
d. SO2 layer
Answer: b. O3 layer

17. Choose the correct statement about the greenhouse effect:
a. Caused by CO2, CFC, CH4 and NO2 gases
b. Caused by the combination of many gases
c. Caused by CO2
d. Caused by SO2 and O3
Answer: a. Caused by CO2, CFC, CH4 and NO2 gases

18. All are particulate pollutants except:
a. Ozone
b. Smoke
c. Soot
d. Dust
Answer: a. Ozone

19. Minute organic or inorganic particles suspended in the atmosphere are known as:
a. Gaseous pollutant
b. Smoky Pollutant
c. Airsols
d. Aerosols
Answer: d. Aerosols

20. Global warming is caused by which of the following gas?
a. CO2
b. O3
c. CO
d. SO2
Answer: a. CO2

21. Which of the following gas can deplete the ozone layer in the upper atmosphere?
a. Methane
b. Ammonia
c. Carbon monoxide
d. Sulfur dioxide
Answer: a. Methane

22. Which of the following is the major component of photochemical smog?
a. Ozone
b. Acrolein
c. Chlorofluorocarbon
d. Peroxyacetyl nitrate
Answer: c. Chlorofluorocarbon

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