[Week 1-12] NPTEL Air pollution and Control Assignment Answers 2024

1. 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

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 :- c

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

  • Micro scale
  • Meso scale
  • Macro scale
  • Global scale

Answer :- b

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 :- d

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 :- d

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 :- c

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 :- b

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

  • Hydration
  • Sulphation
  • Oxidation
  • Carbonation

Answer :- b

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 :- a

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 :- b

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