CIL MT 2020
⭕ A. 10–20
⭕ B. 20–35
⭕ C. 1–10
⭕ D. 36–50
📚 Explanation:
The ideal C/N ratio for assessing the heating value of municipal solid waste is 20–35.
🔹 Waste with this range burns efficiently and yields higher calorific value.
🔹 Too low C/N → excess nitrogen → poor heating value.
🔹 Too high C/N → excess carbon → incomplete combustion.
The ideal C/N ratio for assessing the heating value of municipal solid waste is 20–35.
🔹 Waste with this range burns efficiently and yields higher calorific value.
🔹 Too low C/N → excess nitrogen → poor heating value.
🔹 Too high C/N → excess carbon → incomplete combustion.
👉 Therefore, the correct answer is: B. 20–35
Key Points on C/N Ratio in MSW:
- Optimal heating value: Achieved when C/N is 20–35.
- Low C/N ratio: Indicates high nitrogen and moisture.
- High C/N ratio: Indicates excess carbon causing incomplete combustion.
