MCQs with Answers on “Air Pollution in Urban India: Causes, Consequences, and Remedies”
1. What is the primary cause of air pollution in urban India?
A) Deforestation
B) Industrial emissions
C) Vehicular emissions
D) Agricultural practices
Answer: C) Vehicular emissions
2. Which pollutant is a key component of smog in Indian cities?
A) Carbon dioxide
B) Methane
C) Sulfur dioxide
D) Ozone
Answer: D) Ozone
3. The Air (Prevention and Control of Pollution) Act was enacted in which year?
A) 1974
B) 1981
C) 1987
D) 1990
Answer: B) 1981
4. What is the main source of PM2.5 in urban areas?
A) Vehicular emissions
B) Sea salt
C) Volcanic activity
D) Forest fires
Answer: A) Vehicular emissions
5. Which city in India consistently ranks among the most polluted in the world?
A) Bengaluru
B) New Delhi
C) Hyderabad
D) Pune
Answer: B) New Delhi
6. Which international protocol addresses air pollution and climate change?
A) Kyoto Protocol
B) Paris Agreement
C) Montreal Protocol
D) Basel Convention
Answer: A) Kyoto Protocol
7. Which device is commonly used to monitor air quality?
A) Thermometer
B) Spectrometer
C) Air Quality Index (AQI) meter
D) Barometer
Answer: C) Air Quality Index (AQI) meter
8. Which gas is a primary greenhouse gas contributing to urban air pollution?
A) Oxygen
B) Nitrogen
C) Carbon dioxide
D) Helium
Answer: C) Carbon dioxide
9. What does AQI stand for?
A) Air Quality Index
B) Atmospheric Quality Indicator
C) Air Quota Indicator
D) Air Quality Intensity
Answer: A) Air Quality Index
10. Which pollutant is commonly associated with respiratory issues?
A) Nitrogen gas
B) Particulate Matter (PM2.5 and PM10)
C) Water vapor
D) Argon
Answer: B) Particulate Matter (PM2.5 and PM10)
11. Which Indian mission focuses on reducing air pollution?
A) Smart Cities Mission
B) National Clean Air Programme (NCAP)
C) Digital India
D) Skill India
Answer: B) National Clean Air Programme (NCAP)
12. What is the permissible limit of PM2.5 in the air as per WHO guidelines?
A) 10 μg/m³ annually
B) 25 μg/m³ annually
C) 50 μg/m³ annually
D) 100 μg/m³ annually
Answer: A) 10 μg/m³ annually
13. Which renewable energy source can reduce air pollution?
A) Coal
B) Natural gas
C) Solar power
D) Diesel
Answer: C) Solar power
14. What is a common effect of air pollution on human health?
A) Enhanced immunity
B) Respiratory diseases
C) Improved vision
D) Reduced water consumption
Answer: B) Respiratory diseases
15. Which crop residue burning contributes significantly to air pollution in North India?
A) Wheat
B) Rice
C) Cotton
D) Maize
Answer: B) Rice
16. What role do trees play in reducing urban air pollution?
A) Increase carbon dioxide levels
B) Absorb pollutants and provide oxygen
C) Emit sulfur dioxide
D) Increase nitrogen levels
Answer: B) Absorb pollutants and provide oxygen
17. Which is the largest contributor to sulfur dioxide emissions in urban India?
A) Automobiles
B) Coal-fired power plants
C) Construction activities
D) Agriculture
Answer: B) Coal-fired power plants
18. Which harmful pollutant is primarily released by diesel vehicles?
A) Lead
B) Nitrogen Oxides (NOx)
C) Ozone
D) Hydrogen
Answer: B) Nitrogen Oxides (NOx)
19. Which of these is an indoor air pollutant in urban areas?
A) Radon
B) Carbon monoxide
C) Formaldehyde
D) All of the above
Answer: D) All of the above
20. Which season in India sees the worst air pollution levels?
A) Summer
B) Winter
C) Monsoon
D) Spring
Answer: B) Winter
21. Which of the following technologies is used to reduce industrial air pollution?
A) Scrubbers
B) Coal burners
C) Combustion engines
D) Fossil fuel boilers
Answer: A) Scrubbers
22. What does BS-VI refer to in the context of reducing vehicular pollution?
A) A water purification standard
B) Bharat Stage Emission Standard VI
C) A type of renewable energy
D) A health regulation
Answer: B) Bharat Stage Emission Standard VI
23. Which Indian ministry oversees air quality management?
A) Ministry of Health
B) Ministry of Environment, Forest, and Climate Change
C) Ministry of Urban Development
D) Ministry of Power
Answer: B) Ministry of Environment, Forest, and Climate Change
24. Which type of vehicle contributes least to air pollution?
A) Diesel vehicles
B) Electric vehicles
C) Petrol vehicles
D) CNG vehicles
Answer: B) Electric vehicles
25. What is stubble burning?
A) Burning of waste in urban areas
B) Burning of crop residues in agricultural fields
C) Controlled burning of forests
D) Disposal of medical waste
Answer: B) Burning of crop residues in agricultural fields
26. Which pollutant is responsible for acid rain?
A) Ozone
B) Sulfur dioxide and nitrogen oxides
C) Carbon monoxide
D) Methane
Answer: B) Sulfur dioxide and nitrogen oxides
27. What does CPCB stand for?
A) Central Pollution Control Bureau
B) Central Pollution Coordination Board
C) Central Power Control Board
D) Climate Pollution Control Bureau
Answer: A) Central Pollution Control Bureau
28. What is the role of catalytic converters in vehicles?
A) Increase fuel efficiency
B) Reduce air pollutants like NOx and CO
C) Boost engine power
D) Reduce noise pollution
Answer: B) Reduce air pollutants like NOx and CO
29. Which natural phenomenon can trap air pollutants close to the ground?
A) Global warming
B) Temperature inversion
C) Monsoon
D) Volcanic eruptions
Answer: B) Temperature inversion
30. What is the best way to reduce urban air pollution?
A) Use of renewable energy
B) Planting more trees
C) Promoting public transportation
D) All of the above
Answer: D) All of the above
