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