Air Pollution and Control Week 1 Nptel Quiz Answers

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Air Pollution and Control Week 1 Nptel Quiz Answers (Jan-Apr 2025)

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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

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4. How can chemical transformation affect air pollutants?

• By neutralizing them
• By forming secondary pollutants
• By making them harmless
• By increasing their density

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5. What are Polycyclic Aromatic Hydrocarbons (PAHs) primarily found in?

• Water and air
• Coal and tar sediments
• Vegetation
• Natural gas

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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

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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

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8. Which of the following pollutants is NOT mentioned as causing organ toxicity in animals?

• Carbon monoxide (CO)
• Nitrous oxide (N₂O)
• Ammonia (NH₃)
• Mercury

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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

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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

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Air Pollution and Control Week 1 Nptel Quiz Answers

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