NPTEL Municipal Solid Waste Management Week 10 Assignment Answers 2024
1. What is the primary cause of Landfill Gas Generation?
(a) Volatilization
(b) Biological decomposition
(c) Chemical reactions
(d) All of these
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2. In which of the following phase/phases of decomposition, does the pH of leachate drop?
(a) Aerobic phase
(b) Acidogenic phase
(c) Acetogenic phase
(d) Methane fermentation phase
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3. Which of the following factor(s) affect LFG generation?
(a) Temperature
(b) pH
(c) Waste density
(d) All of these
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4. Which among the following correctly fits to define the “Rule of 100’s” in pipeline design used in landfill gas generation systems?
(a) Flow = 100 mm3/hr, Diameter of pipe = 0.1 m, length = 100 m, pressure loss = 6 mbar
(b) Flow = 100 m3/hr, Diameter of pipe = 0.1 m, length = 100 m, pressure loss = 6 mbar
(c) Flow = 1000 m3/hr, Diameter of pipe = 10 mm, length = 100 m, pressure loss = 6 mbar
(d) Flow = 100 m3/hr, Diameter of pipe = 100 m, length = 100 m, pressure loss = 6 mbar
Answer :-
5. According to SWM Rules, how many years should pass before a cleared dump can be used for habitation?
(a) 10 years
(b) 15 years
(c) 20 years
(d) 25 years
Answer :-
6. Identify the correct schematic representation of biomining through excavator by making windrow:
(a) Excavation> windrow making> hand picking large objects> windrow turning> spraying mist spray bio culture> screening
(b) Excavation> hand picking large objects> windrow making> windrow turning> spraying mist spray bio culture> screening
(c) Excavation> hand picking large objects> spraying mist spray bio culture> windrow making> windrow turning> screening
(d) Excavation> hand picking large objects> windrow making> spraying mist spray bio culture> windrow turning> screening
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7. Factors affecting LFG transport mechanisms:
(a) Permeability
(b) Geologic Conditions
(c) Landfill cover and liner systems
(d) None of these
Answer :-
8. Which of the following should be tested time to time for bioearth?
(a) Microorganisms
(b) Heavy metals
(c) Petrochemicals
(d) Radioactive elements
Answer :-
9. Permissible options for reusing recovered Landfill sites after certain years can be:
a) For Open Stadium
b) Reuse for SWM
c) For Flammable Warehouses
d) All of these
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