[Week 1] NPTEL Air pollution and Control Assignment Answers 2024

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NPTEL Air pollution and Control Week 1 Assignment Answers 2024

1. Which of the following fuels was banned by King Edward-I of England in 1307?

  • Wood
  • Coa
  • lBoth coal and wood
  • Fossil fuel
Answer :- 

2. 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
Answer :- 

3. Photochemical smog comes under which scales of air pollution?

  • Micro scale
  • Meso scale
  • Macro scale
  • Global scale
Answer :- 

4. Which household group in developing countries is highlighted as having the highest risk for disease development due to their longer duration exposure to indoor air pollution?

  • Elderly members
  • Children
  • Men
  • Women
Answer :- 

5. Which of the following is the short-term effects of dioxin on humans?

  • Vomiting
  • Coughing
  • Dark spots and lesions on the skin
  • Throat irritation 
Answer :- 

6. Which part of the plant plays a role in the reactions of pollutants in an indirect way? 

  • Stem of the plant
  • Water film present on cuticle
  • Roots of the plant
  • Leaf of the plant 
Answer :- 

7. What is highlighted as a significant stressor to biodiversity in the context of airborne deposition? 

  • Heavy metals
  • Excess deposition of airborne nitrogen in the form of ammonia
  • Noise pollution
  • Changes in atmospheric pressure
Answer :- 

8. What phenomenon is primarily responsible for the erosion of exposed surfaces of building materials?

  • Hydration
  • Sulphation
  • Oxidation
  • Carbonation
Answer :- 

9. What is/are damaging factors contribute to structure failure in porous materials when exposed for a long period?

  • Frost damage and salt weathering
  • Corrosion
  • Polluted environment
  • Oxidation and carbonation
Answer :- 

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
Answer :- 

NPTEL Air pollution and Control Week 01 Assignment Answers 2024

1. Which of the following gas is more in percentage in the air?

  • Oxygen gas
  • Nitrogen gas
  • Water vapour
  • Carbon dioxide gas
Answer :- 

2. In 1984, Bhopal gas tragedy was caused due to leakage of

  • Sodium monoxide
  • Sodium thiocyanate
  • Potassium isocyanate
  • Methyl isocyanate
Answer :- 

3. Which of the following is a secondary pollutant

  • Ozone
  • Carbon monoxide
  • Nitrogen dioxide
  • Sulphur dioxide
Answer :- 

4. AQI stands for

  • Aerosol Quality Index
  • Air Quality Index
  • Air Quantity Index
  • Aerosol Quantity Index
Answer :- 

5. The value of the Dry Adiabatic Lapse Rate is

  • 9.8 °C/km
  • 13.8 °C/km
  • 5.8 °C/km
  • 8.8 °C/km
Answer :- 

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