This set of MCQ(multiple choice questions) focuses on the Air Pollution and Control Week 1 NPTEL 2025 Solutions
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Week 0: Assignment Solutions
Week 1 : Assignment Solutions
Week 2: Assignment Solutions
Week 3: Assignment Solutions
Week 4: Assignment Solutions
Week 5: Assignment Solutions
Week 6: Assignment Solutions
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Week 8: Assignment Solutions
Week 9: Assignment Solutions
Week 10: Assignment Solutions
Week 11: Assignment Solutions
Week 12: Assignment Solutions
NOTE: You can check your answer immediately by clicking show answer button. Moreover, this set of “Air Pollution and Control Week 1 NPTEL 2025 Solutions” contains 10 questions.
Air Pollution and Control Week 1 NPTEL 2025 Solutions
Q1. Match List-I (Air pollution events/accidents) with List-II (Year) and select the correct answer using the codes given below:
a) A-2, B-3, C-1, D-4
b) A-4, B-1, C-3, D-2
c) A-4, B-3, C-2, D-4
d) A-1, B-2, C-3, D-1
Answer: a)
Q2. Which of the following fuels was banned by King Edward-I of England in 1307?
a) Wood
b) Coal
c) Both coal and wood
d) Fossil fuel
Answer: b)
Q3. The lithosphere includes:
1) Crust
2) Uppermost mantle
3) Water over the earth
4) Water beneath the earth
Select the correct combination:
a) 1, 2, 3
b) 2, 3
c) 1, 2
d) 1, 4
Answer: c)
Q4. How can chemical transformation affect air pollutants?
a) By neutralizing them
b) By forming secondary pollutants
c) By making them harmless
d) By increasing their density
Answer: b)
Q5. What are Polycyclic Aromatic Hydrocarbons (PAHs) primarily found in?
a) Wate and air
b) Coal and tar sediments
c) Vegetation
d) Natural gas
Answer: b)
Q6. Forest fires contribute to the presence of Polycyclic Aromatic Hydrocarbons (PAHs) in the environment because they involve:
a) Incomplete combustion of organic matter
b) Complete combustion of trees
c) Chemical reactions in the soil
d) Evaporation of water vapor
Answer: a)
Q7. Which of the following is the short-term effects of dioxin on humans?
a) Vomiting
b) Coughing
c) Dark spots and lesions on the skin
d) Throat irritation
Answer: c)
Q8. Which of the following pollutants is NOT mentioned as causing organ toxicity in animals?
a) Carbon monoxide (CO)
b) Nitrous oxide (N₂O)
c) Ammonia (NH₃)
d) Mercury
Answer: b)
Q9. What is a major stressor to biodiversity caused by air pollution?
a) Excess deposition of airborne nitrogen in the form of ammonia
b) Carbon dioxide emissions
c) Ozone layer depletion
d) Acid rain
Answer: a)
Q10. 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) Good adhesion
c) Weak cohesion
d) Weak adhesion
Answer: b)
Air Pollution and Control Week 1 NPTEL Solutions
Q1. In 1981, which air pollution legislation was adopted in India?
a) The Air (Prevention and Control of Pollution) Rules
b) Air (Prevention and Control of Pollution) Act
c) Environment (Protection) Act (EPA)
d) Central Motor Vehicles Act
Answer: b)
Q2. Which gas was released during the Bhopal gas tragedy?
a) Methane
b) Styrene
c) Sulphur dioxide
d) Methyl Isocyanate
Answer: d)
Q3. Photochemical smog comes under which scales of air pollution?
a) Micro scale
b) Meso scale
c) Macro scale
d) Global scale
Answer: b)
Q4. Select the incorrect statement.
a) Contamination is simply the presence of a substance where it should not be or at concentrations above the background.
b) Pollution is contamination that results in or can result in adverse biological effects on resident communities.
c) Pollutant is the substance that alters the composition of the natural atmosphere.
d) Sources are the places to which pollutants get absorbed or converted/transformed in some other constituents/forms.
Answer: d)
Q5. Which of the following gases is termed as the silent killer?
a) Methane
b) Carbon dioxide
c) Carbon monoxide
d) Sulphur dioxide
Answer: c)
Q6. ____________ is a colorless and highly irritating gas that is formed by a photochemical reaction just above the earth’s surface.
a) NOx
b) SOx
c) Ground-level ozone
d) CO
Answer: c)
Q7. An observable alteration in the plant when exposed to air pollution is called
a) Damage
b) Injury
c) Stomata
d) None of the above
Answer: b)
Q8. Which symptom is considered as an acute effect of Arsenic in animals:
a) Severe salivation
b) Anemia
c) Diarrhea
d) Bone deformity
Answer: a)
Q9. Which of the following pollutants is mainly responsible for forming the black crust on the surface of the stone materials?
a) Particulate matter
b) SO2
c) CO
d) O3
Answer: a)
Q10. Which of the following pollutants is the most sensitive to rubber degradation?
a) NO2
b) SO2
c) O3
d) CO2
Answer: c)
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