CIL MT 2020
⭕ A. Carbon dioxide and methane
⭕ B. Carbon monoxide and nitrogen
⭕ C. Hydrogen sulphide and oxygen
⭕ D. Ammonia and hydrogen
📚 Explanation:
The major gases produced from a landfill site are Carbon dioxide (CO₂) and Methane (CH₄).
🔹 These gases are generated due to **anaerobic decomposition** of biodegradable waste.
🔹 Methane is combustible and contributes to landfill fires & greenhouse effect.
🔹 CO₂ forms the other major component of landfill gas.
The major gases produced from a landfill site are Carbon dioxide (CO₂) and Methane (CH₄).
🔹 These gases are generated due to **anaerobic decomposition** of biodegradable waste.
🔹 Methane is combustible and contributes to landfill fires & greenhouse effect.
🔹 CO₂ forms the other major component of landfill gas.
👉 Therefore, the correct answer is: A. Carbon dioxide and methane
Key Points on Landfill Gas:
- 60% CH₄ + 40% CO₂: Typical landfill gas composition.
- Anaerobic digestion: Gases released as organic matter breaks down.
- Environmental impact: Methane is a potent greenhouse gas.
