NPTEL Municipal Solid Waste Management Week 9 Assignment Answers 2024
1. Selection of best rank sites of landfill is done based on?
(a) Pollution load index
(b) Solvita index
(c) Site Sensitivity Index
(d) Bioaccumulation Index
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2. Monitoring of landfill should be done …………… years after site closure?
(a) 20 – 25
(b) 10 – 20
(c) 15 – 20
(d) 25 – 30
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3. What are the factors that influence the leachate quality?
(a) Groundwater Intrusion
(b) Precipitation
(c) None of these
(d) Ambient temperature
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4. What type of waste is suitable for sanitary landfill?
(a) biodegradable waste
(b) Pre and post processing rejects from waste processing sites
(c) hazardous waste
(d) inert waste
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5. What are the problems associated with leachate collection system?
(a) Optimum flow rate of leachate in the outlet
(b) Growth of microorganisms in the pipes
(c) Chemical reaction in the pipes
(d) Clogging
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6. Which of the following is true regarding aerobic bioreactor landfill?
(a) Occurs in the absence of oxygen and yields high energy gases such as methane
(b) Leachate is removed from the bottom and re-circulated into the landfill in a controlled manner
(c) Air is injected into the waste mass using vertical or horizontal wells
(d) contains in house filtration system to assess the digestion
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7. Which of the component of leachate collection system is used to protect against the damage?
(a) Fine soil
(b) Slope
(c) Drainage layer
(d) French drains
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8. The minimum permeability of drainage layer in leachate collection system is?
(a) 10-1 cm/sec
(b) 10-2 cm/sec
(c) 10-3 cm/sec
(d) 10-4 cm/sec
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9. What are the location restrictions that must be considered for landfill site?
(a) 400 m away from highways
(b) 500 m away from public parks
(c) 100 m from the pond
(d) 500 m from water supply
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10. What are the ways of controlling leachate in landfills?
(a) Restrict runoff water
(b) Aerobic landfill technique
(c) Use of heterogenous waste
(d) Use of proper liner system
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