Municipal Solid Waste Management Nptel Week 5 Answers
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Municipal Solid Waste Management Nptel Week 5 Answers (July-Dec 2025)
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Question 1. The feasibility of waste for the incineration process should have:
a) Moisture content <45%
b) Moisture content <60%
c) Ash content <70%
d) Volatile matter >10%
Question 2. Calculate the higher heating value of a solid fuel. Use the following data for calculation: Low heating value = 16 kJ/kg, Moisture content = 10%, Weight of hydrogen = 3%
a) 516 kJ/kg
b) 480 kJ/kg
c) 916 kJ/kg
d) 25 kJ/kg
Question 3. The potential for energy generation from waste depends on?
a) Ash content
b) Calorific value
c) Fixed carbon
d) Moisture content
Question 4. What is the concentration of ash content in flue gas from moving grate incinerator?
a) 5 – 10%
b) 1 – 4%
c) 1 – 3%
d) 11 – 15%
Question 5. Which component has higher concentration in RDF?
a) Organic waste
b) Inert
c) Glass/metal
d) Combustible materials
Question 6. Which of the incineration residue causes slagging and fouling?
a) Gas
b) Fly ash
c) Tar
d) None of these
Question 7. What are the products of the incineration of waste?
a) Ash, flue gas, heat
b) Char, syngas, heat
c) Ash, tar, heat
d) Char, flue gas, heat
Question 8. The gross calorific value of a solid fuel represents its
a) Net calorific value
b) Lower heating value
c) Higher heating value
d) Lower calorific value
Question 9. In waste characterization, which of the following parameters is not considered in a Tanner diagram?
a) Moisture content
b) Ash content
c) Volatile matter
d) Fixed carbon
Question 10. According to the CPHEEO manual, what is the minimum gas phase combustion temperature and residence time of flue gas that should be maintained for MSW incineration?
a) 850°C and 10 s, respectively
b) 850°C and 2 s, respectively
c) 1100°C and 2 s, respectively
d) 1100°C and 10 s, respectively
These are Municipal Solid Waste Management Nptel Week 5 Answers