Air Pollution and Control Week 1 Nptel Quiz Answers
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Air Pollution and Control Week 1 Nptel Quiz Answers (Jan-Apr 2026)
Que1. Match List-I (Air pollution events/accidents) with List-II (Year) and select the correct answer using the codes given below:
List I (Air pollution events/accidents) – List II (Year)
A. Great London Smog
B. Los Angeles smog
C. Bhopal Gas Tragedy
D. Vapour Cloud Explosion
a) A-4, B-1, C-3, D-2
b) A-2, B-3, C-1, D-4
c) A-4, B-3, C-2, D-1
d) A-2, B-1, C-4, D-3
Que2. The lithosphere includes:
- Crust
- Uppermost mantle
- Water over the earth
- Water beneath the earth
Select the correct combination:
a) 1, 2, 3
b) 1, 2
c) 2, 3
d) 1, 4
Que3. Which of the following factors are responsible for the susceptibility of urban areas towards health issues related to air pollution?
a) Abundance of green spaces
b) Limited exposure to indoor air pollution
c) Overpopulation, uncontrolled urbanization, and industrialization
d) Strict pollution control measures
Que4. Chemical name of dioxin is
a) Tetrachloromethane para dioxin
b) Tetrachlorodibenzo para dioxin
c) Tetrachloroethane para dioxin
d) Tetrachloroethylene para dioxin
Que5. What is a major stressor to biodiversity caused by air pollution?
a) Carbon dioxide emissions
b) Excess deposition of airborne nitrogen in the form of ammonia
c) Ozone layer depletion
d) Acid rain
Que6. What property of stone materials makes them vulnerable to frost damage and salt weathering?
a) Porosity
b) Low density
c) High elasticity
d) Thermal conductivity
Que7. In coastal regions chlorides play a significant role as it accelerates the corrosion of metals, the percentage of chlorides in the sea salt is upto
a) 35%
b) 55%
c) 45%
d) 65%
Que8. What phenomenon is mainly responsible for the erosion of building stones?
a) Oxidation
b) Hydration
c) Sulphation
d) Thermal expansion
Que9. As a preservative coating on the building surface, materials used like acrylic copolymers and siloxanes because of their _________ film forming properties.
a) Good cohesion
b) Weak cohesion
c) Good adhesion
d) Weak adhesion
Que10. Which materials are recommended for preservative coating due to their adhesion and film-forming properties?
a) Glass and ceramics
b) Steel and iron
c) Acrylic copolymers and siloxanes
d) Wood and plastic
Air Pollution and Control Week 1 Nptel Quiz Answers (Jan-Apr 2025)
Course link: Click here
1. Match List-I (Air pollution events/accidents) with List-II (Year) and select the correct answer using the codes given below:
List I (Air pollution events/accidents) List II (Year)
A. Donora, Pennsylvania 1. 1984
B. Los Angeles smog 2. 1948
C. Bhopal Gas Tragedy 3. 1954
D. Vapour Cloud Explosion 4. 2009- A-2, B-3, C-1, D-4
- A-4, B-1, C-3, D-2
- A-4, B-3, C-2, D-4
- A-1, B-2, C-3, D-1
Answer :- a
2. Which of the following fuels was banned by King Edward-I of England in 1307?
- Wood
- Coal
- Both coal and wood
- Fossil fuel
Answer :- b
3. The lithosphere includes:
1. Crust
2. Uppermost mantle
3. Water over the earth
4. Water beneath the earth
Select the correct combination:
- 1, 2, 3
- 2, 3
- 1, 2
- 1, 4
4. How can chemical transformation affect air pollutants?
- By neutralizing them
- By forming secondary pollutants
- By making them harmless
- By increasing their density
5. What are Polycyclic Aromatic Hydrocarbons (PAHs) primarily found in?
- Water and air
- Coal and tar sediments
- Vegetation
- Natural gas
6. Forest fires contribute to the presence of Polycyclic Aromatic Hydrocarbons (PAHs) in the environment because they involve:
- Incomplete combustion of organic matter
- Complete combustion of trees
- Chemical reactions in the soil
- Evaporation of water vapor
7. Which of the following is the short-term effects of dioxin on humans?
- Vomiting
- Coughing
- Dark spots and lesions on the skin
- Throat irritation
8. Which of the following pollutants is NOT mentioned as causing organ toxicity in animals?
- Carbon monoxide (CO)
- Nitrous oxide (N₂O)
- Ammonia (NH₃)
- Mercury
9. What is a major stressor to biodiversity caused by air pollution?
- Excess deposition of airborne nitrogen in the form of ammonia
- Carbon dioxide emissions
- Ozone layer depletion
- Acid rain
10. As a preservative coating on the building surface, materials used like acrylic copolymers and siloxanes because of their ___________film forming properties.
- Good cohesion
- Good adhesion
- Weak cohesion
- Weak adhesion
Air Pollution and Control Week 1 Nptel Quiz Answers
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