GPSC AE Class (1&2) Paper – 2017
⭕ A. 40 μg/m³
⭕ B. 60 μg/m³
⭕ C. 100 μg/m³
⭕ D. 120 μg/m³
📚 Explanation:
As per the National Ambient Air Quality Standards (NAAQS) set by the Central Pollution Control Board (CPCB), the permissible daily average limit of RSPM (also known as PM₁₀) in residential areas is:
RSPM (Respirable Suspended Particulate Matter) includes particles with a diameter < 10 microns (PM₁₀). Higher concentrations can cause respiratory diseases, lung irritation, asthma, and long-term health hazards.
As per the National Ambient Air Quality Standards (NAAQS) set by the Central Pollution Control Board (CPCB), the permissible daily average limit of RSPM (also known as PM₁₀) in residential areas is:
✔ 60 μg/m³ (24-hour average)
RSPM (Respirable Suspended Particulate Matter) includes particles with a diameter < 10 microns (PM₁₀). Higher concentrations can cause respiratory diseases, lung irritation, asthma, and long-term health hazards.
👉 Therefore, the correct answer is: B. 60 μg/m³
Key Points on RSPM (PM₁₀) and NAAQS:
- RSPM / PM₁₀: Particles with size ≤ 10 microns.
- Health Effects: Respiratory issues, asthma, heart & lung diseases.
- NAAQS Daily Limit (Residential): 60 μg/m³.
- Annual Limit (Residential): 40 μg/m³.
