NPTEL Municipal Solid Waste Management Week 4 Assignment Answers 2024

1. What is the requirement for setting up of an economic transfer station?

(a) A disposal sites more than 10 km far from city boundary and smaller vehicles are used for transportation of waste.
(b) A disposal sites more than 10 km far from city boundary and transportation of waste by railroads.
(c) A disposal sites of 3 km far from city boundary and smaller vehicles are used for transportation of waste.
(d) A disposal sites more than 10 km far from city boundary and large dumpster are used for transportation of waste.

Answer :- a

2. If the quantity of waste generated is low, waste separation can be done at

(a) Material Recovery Facility
(b) Separation at the source
(c) After dumping in the landfill
(d) None of these

Answer :- b

3. Which of the following does not require size reduction of waste?

(a) Reduce storage
(b) Reduce shipping cost
(c) To get uniform product
(d) To reduce volume

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4. Screening is the process of

(a) Separation of waste of different densities
(b) Separation of waste of different volume
(c) Separation of waste of different sizes
(d) Separation of waste of different mass

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5. Which type of waste separator is used for separation of light material from heavy material based on weight?

(a) Screening
(b) Density separator
(c) Magnetic separator
(d) None of these

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6. What is the technique used to store and transport waste cheaply?

(a) Shredding
(b) Conveyors
(c) Hydraulic and pneumatic system
(d) Densification

Answer :-

7. What is the requirement of a waste drop-off center?

(a) The waste generator is not responsible for carrying the waste to the collection station
(b) The waste producer has to carry the waste to the collection center
(c) The waste producer can purchase the recyclable material
(d) None of these

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8. Waste such as HDPE or PET are usually separated by

(a) Air classification
(b) Density blower
(c) Conveyor
(d) Eddy current separator

Answer :-

9. Which among the following are non-recyclable plastics?

(a) Low-density polyethylene
(b) Polypropylene
(c) Composite plastics
(d) Polystyrene

Answer :-

10. What are the stages of glass recycling process?

(a) Segregation, glass breaking, trommel, primary rotary screen, secondary rotary screen size classifier, fluidized bed dryer, pulveriser.
(b) Segregation, glass breaking, trommel, fluidized bed dryer, pulveriser, primary rotary screen, secondary rotary screen size classifier.
(c) Segregation, glass breaking, trommel, fluidized bed dryer, primary rotary screen, pulveriser, secondary rotary screen size classifier.
(d) Segregation, trommel, glass breaking, fluidized bed dryer, primary rotary screen, pulveriser, secondary rotary screen size classifier.