Q1: 1. What is the primary cause of air pollution in urban areas?

• A) Exhaust emissions from vehicles
• B) Industrial waste
• C) Agricultural activities
• D) Deforestation

Q2: 2. Which of the following pollutants is a major contributor to water pollution in rivers and lakes?

• A) Oil spills
• B) Plastic waste
• C) Chemical fertilizers
• D) Sewage discharge

Q3: 3. Acid rain is primarily caused by the release of which pollutants into the atmosphere?

• A) Carbon dioxide
• B) Sulfur dioxide and nitrogen oxides
• C) Methane
• D) Ozone

Q4: 4. Which of the following actions can help reduce air pollution from vehicles?

• A) Using public transportation
• B) Idling engines for long periods
• C) Overloading vehicles
• D) Disposing of waste on roads

Q5: 5. Eutrophication of water bodies is mainly caused by the excess input of

• A) Oxygen
• B) Nutrients like nitrogen and phosphorus
• C) Heavy metals
• D) Pesticides

Q6: 6. Which of the following is a common indoor air pollutant that can lead to respiratory issues?

• A) Carbon monoxide
• B) Radon
• C) Lead
• D) Asbestos

Q7: 7. Thermal pollution of water bodies is primarily caused by

• A) Solar radiation
• B) Industrial discharge of hot water
• C) Oil spills
• D) Agricultural runoff

Q8: 8. Which of the following is a greenhouse gas that contributes to global warming?

• A) Oxygen
• B) Carbon monoxide
• C) Methane
• D) Nitrogen

Q9: 9. The presence of microplastics in oceans and marine life is mainly due to

• A) Industrial waste
• B) Agricultural runoff
• C) Improper waste disposal
• D) Oil spills

Q10: 10. Which of the following pollutants is a major component of smog in urban areas?

• A) Carbon monoxide
• B) Ozone
• C) Lead
• D) Radon

Q11: 11. What is the primary source of mercury pollution in water bodies?

• A) Mining activities
• B) Agricultural runoff
• C) Oil spills
• D) Industrial discharge

Q12: 12. Which of the following pollutants is responsible for the depletion of the ozone layer?

• A) Carbon dioxide
• B) Sulfur dioxide
• C) Chlorofluorocarbons (CFCs)
• D) Nitrogen oxides

Q13: 13. Harmful algal blooms in water bodies are mainly caused by an excess of

• A) Oxygen
• B) Carbon dioxide
• C) Phosphorus
• D) Sulfur dioxide

Q14: 14. Which of the following pollutants is a byproduct of incomplete combustion and can cause respiratory problems?

• A) Sulfur dioxide
• B) Nitrogen oxides
• C) Particulate matter
• D) Hydrocarbons

Q15: 15. Bioaccumulation of persistent organic pollutants (POPs) in aquatic organisms occurs due to

• A) Rapid breakdown of pollutants in water
• B) Efficient filtration by aquatic plants
• C) Inability of organisms to metabolize POPs
• D) Low levels of POPs in the environment

Q16: 16. Which of the following activities contributes to thermal pollution in water bodies?

• A) Planting trees along riverbanks
• B) Releasing warm water from industrial processes
• C) Implementing wetland restoration projects
• D) Promoting sustainable fishing practices

Q17: 17. The primary source of nutrient pollution in water bodies is

• A) Air pollution
• B) Soil erosion
• C) Agricultural runoff
• D) Urbanization

Q18: 18. Which of the following pollutants is associated with the formation of acid rain?

• A) Carbon monoxide
• B) Ozone
• C) Sulfur dioxide
• D) Radon

Q19: 19. Contamination of groundwater by hazardous chemicals is often a result of

• A) Proper waste disposal practices
• B) Leaking underground storage tanks
• C) Organic farming practices
• D) Controlled industrial discharges

Q20: 20. Which of the following pollutants is a major concern in indoor air quality due to its link with respiratory diseases?

• A) Radon
• B) Lead
• C) Asbestos
• D) Mold spores

Q21: 21. Ocean acidification is primarily caused by the absorption of excess

• A) Oxygen
• B) Carbon dioxide
• C) Methane
• D) Nitrogen

Q22: 22. Which of the following pollutants is a major contributor to smog formation in urban areas?

• A) Carbon monoxide
• B) Nitrogen oxides
• C) Particulate matter
• D) Radon

Q23: 23. Heavy metal contamination in water bodies is often linked to

• A) Natural weathering processes
• B) Organic matter decomposition
• C) Industrial discharges
• D) Sustainable fishing practices

Q24: 24. Which of the following pollutants is a key component of secondary air pollution, such as ground-level ozone?

• A) Carbon dioxide
• B) Sulfur dioxide
• C) Nitrogen oxides
• D) Lead

Q25: 25. Thermal pollution in water bodies can disrupt aquatic ecosystems by

• A) Increasing dissolved oxygen levels
• B) Decreasing water temperature
• C) Altering fish migration patterns
• D) Promoting biodiversity