UPPCLE AE 2019
⭕ A. 20 μg/m³
⭕ B. 180 μg/m³
⭕ C. 100 μg/m³
⭕ D. 0.5 μg/m³
📚 Explanation:
As per the Central Pollution Control Board (CPCB), the annual concentration of Sulphur Dioxide (SO₂) in ecologically sensitive areas shall not exceed:
SO₂ is a major pollutant released from coal burning, power plants, and industrial emissions. High concentrations can cause acid rain, vegetation damage, corrosion, and severe respiratory problems.
As per the Central Pollution Control Board (CPCB), the annual concentration of Sulphur Dioxide (SO₂) in ecologically sensitive areas shall not exceed:
✔ 20 μg/m³ on two consecutive days of monitoring
SO₂ is a major pollutant released from coal burning, power plants, and industrial emissions. High concentrations can cause acid rain, vegetation damage, corrosion, and severe respiratory problems.
👉 Therefore, the correct answer is: A. 20 μg/m³
Key Points on Sulphur Dioxide (SO₂) Standards:
- SO₂: Produced mainly from burning fossil fuels.
- CPCB Annual Limit: 20 μg/m³ in ecologically sensitive areas.
- Monitoring Condition: Should not exceed for two consecutive days.
- Effects: Acid rain, vegetation loss, respiratory diseases.
