NPTEL Municipal Solid Waste Management Week 7 Assignment Answers 2024
1. The final composed product has …………specific surface area?
(a) Low
(b) high
(c) intermediate
(d) both high and intermediate
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2. What is the optimal pH range for microorganisms in compost?
(a) 5.5 – 8.5
(b) 6 – 7.5
(c) 5.5 – 8
(d) 5 – 8
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3. What is the required optimum electrical conductivity in compost?
(a) 2 – 3 dS/m
(b) 1 – 2 dS/m
(c) 3 – 4 dS/m
(d) 4 – 5 dS/m
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4. What are the chemical parameters analyzed during the composting process?
(a) Water holding capacity
(b) sBOD
(c) Ammonia content
(d) Available phosphorus
Answer :-
5. What are the properties of a good compost?
(a) Sticky
(b) Free from insects and nematodes
(c) High moisture content
(d) No foul smell
Answer :-
6. Which of the worms in the vermicomposting builds burrows in deep soil?
(a) ENDOGIEC
(b) ANACIEC
(c) EPIGIEC
(d) None of these
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7. What is the duration of Rotary Drum Composting process?
(a) more than 20 days
(b) between 12 to 20 days
(c) less than 20 days
(d) up to 120 days
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8. What is fatal temperature for worms in vermicomposting?
(a)35 oC
(b)40 oC
(c)>40 oC
(d)16-25 oC
Answer :-
9. On which parameter of composting, Solvita maturity index depends?
(a) Biochemical oxygen demand
(b) Chemical oxygen demand
(c) Volatile content
(d) Carbon dioxide evolution
Answer :-
10. What is the moisture requirement for vermicomposting process?
(a) 50 – 55%
(b) 75 – 80%
(c) 60 – 70%
(d) 40 – 50%
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