Municipal Solid Waste Management Week 1 NPTEL Assignemt Answers 2025
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✅ Subject: Municipal Solid Waste Management
📅 Week: 1
🎯 Session: NPTEL 2025 July-October
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NPTEL Municipal Solid Waste Management Week 1 Assignemt Answers 2025
1. In which of the following conditions can we expect the highest rate of waste generation?
- hilly area with warm weather
- plain area with cold weather
- hilly area with cold weather
- plain area with warm weather
Answer : d
2. Statement 1: Collection frequency affects the waste generation rate.
Statement 2: More wastes are generated in areas where collection frequency is high.
- Both statement 1 and statement 2 are correct
- Statement 1 is correct, but statement 2 is wrong
- Statement 1 is wrong, but statement 2 is correct
- Both Statement 1 and statement 2 are wrong
Answer : a
3. Methods used to estimate waste quantity:
- Load-Count analysis
- Field capacity
- Quartering Method
- Weight-Volume analysis
Answer : See Answers
4. Variation in the waste composition depends on:
- Location
- Season
- Economy
- All of these
Answer :
5. Which of the following states has the highest waste collection efficiency in India (CPCB, 2013)?
- Kerala
- Maharashtra
- Karnataka
- West Bengal
Answer :
6. Statement 1: Understanding the field capacity of waste is important in determining leachate formation in a landfill.
Statement 2: The field capacity doesn’t depend on the state of the decomposition of the waste.
- Both statement 1 and statement 2 are correct
- Statement 1 is correct, but statement 2 is wrong
- Statement 1 is wrong, but statement 2 is correct
- Both statement 1 and statement 2 are wrong
Answer :
7. Statement 1: Volatile solids content is often used as a measure of the biodegradability of the organic fraction of solid waste.
Statement 2: Volatile solids content is an exact indicator of biodegradability.
- Both statement 1 and statement 2 are correct
- Statement 1 is correct, but statement 2 is wrong
- Statement 1 is wrong, but statement 2 is correct
- Both Statement 1 and statement 2 are wrong
Answer :
8. Waste quantification is an important aspect of SWM because it helps in:
- Selecting specific equipment
- Designing waste collection routes
- Designing material recovery facilities and disposal facilities
- All of these
Answer :
9. Which of the following waste characterisation techniques analyses the proportion of carbon, hydrogen, oxygen, nitrogen and sulphur?
- Proximate analysis
- Ultimate analysis
- Calorific value
- None of these
Answer :
10. The instrumental calorific value of the organic components in MSW is determined using:
CHONS analyser
Full-scale boiler as a calorimeter
Laboratory bomb calorimeter
None of these
Answer : See Answers
NPTEL Municipal Solid Waste Management Week 1 Assignemt Answers 2024
Q1. In which of the following conditions can we expect the highest rate of waste generation?
(a) hilly area with warm weather
(b) plain area with cold weather
(c) hilly area with cold weather
(d) plain area with warm weather
Answer:- (d)
Explanation: Warmer areas generally have higher consumption of food, packaged items, and other consumables, especially in plain areas with higher population densities, resulting in higher waste generation.
Q2. Statement 1: Collection frequency affects the waste generation rate.
Statement 2: More wastes are generated in areas where collection frequency is high
(a) Both statement 1 and statement 2 are correct
(b) Statement 1 is correct, but statement 2 is wrong
(c) Statement 1 is wrong, but statement 2 is correct
(d) Both Statement 1 and statement 2 are wrong
Answer:- (a)
Explanation: When collection frequency increases, people are more likely to dispose of all waste promptly, which may give the impression of more waste generation, although actual generation may be similar.
Q3. Methods used to estimate waste quantity:
(a) Load-Count analysis
(b) Field capacity
(c) Quartering Method
(d) Weight-Volume analysis
Answer:- (a), (d)
Explanation: Load-count and weight-volume analysis are commonly used techniques for estimating waste quantity. Quartering is used for sampling, not quantification.
Q4. Variation in the waste composition depends on:
(a) Location
(b) Season
(c) Economy
(d) All of these
Answer:- (d)
Explanation: Waste composition varies depending on location (urban/rural), seasonal factors (festivals, harvest), and economic conditions (wealthier areas tend to generate more packaging waste).
Q5. Which of the following states has the highest waste collection efficiency in India (CPCB, 2013)?
(a) Kerala
(b) Maharashtra
(c) Karnataka
(d) West Bengal
Answer:- (b)
Explanation: As per CPCB data (2013), Maharashtra had implemented effective waste management systems in major cities, improving its collection efficiency.
Q6. Statement 1: Understanding the field capacity of waste is important in determining leachate formation in a landfill.
Statement 2: The field capacity doesn’t depend on the state of the decomposition of the waste.
(a) Both statement 1 and statement 2 are correct
(b) Statement 1 is correct, but statement 2 is wrong
(c) Statement 1 is wrong, but statement 1 is correct
(d) Both Statement 1 and statement 2 are wrong
Answer:- (b)
Explanation: Field capacity determines how much liquid the waste can retain before leachate forms. It does depend on the state of decomposition, as decomposed waste absorbs less moisture.
Q7. Statement 1: Volatile solids content is often used as a measure of the biodegradability of the organic fraction of solid waste
Statement 2: Volatile solids content is an exact indicator of biodegradability
(a) Both statement 1 and statement 2 are correct
(b) Statement 1 is correct, but statement 2 is wrong
(c) Statement 1 is wrong, but statement 1 is correct
(d) Both Statement 1 and statement 2 are wrong
Answer:- (b)
Explanation: Volatile solids indicate potential biodegradability but not exactly. Some volatile solids may not degrade biologically, hence not an exact measure.
Q8. Waste quantification is an important aspect of SWM because it helps in:
(a) Selecting specific equipment
(b) Designing waste collection routes
(c) Designing material recovery facilities and disposal facilities
(d) All of these
Answer:- (d)
Explanation: Accurate waste quantification helps in planning all aspects of Solid Waste Management (SWM), from equipment to facility design and route optimization.
Q9. Which of the following waste characterization techniques analyse the proportion of carbon, hydrogen, oxygen, nitrogen and sulphur?
(a) Proximate analysis
(b) Ultimate analysis
(c) Calorific value
(d) None of these
Answer:- (b)
Explanation: Ultimate analysis determines the elemental composition of waste, which includes C, H, O, N, and S — key to understanding energy potential and emissions.
Q10. The calorific value of the organic components in MSW is determined using:
(a) CHONS analyser
(b) full-scale boiler as a calorimeter
(c) laboratory bomb calorimeter
(d) None of these
Answer:- (b), (c)
Explanation: Laboratory bomb calorimeters are standard for measuring calorific value. In some cases, full-scale boilers can also be used to approximate this under operational conditions.
