In the cities of our country, which among the following atmospheric gases are normally considered in calculating the value of Air Quality Index?
- Carbon dioxide
- Carbon monoxide
- Nitrogen dioxide
- Sulfur dioxide
- Methane
Select the correct answer using the code given below.
[UPSC Civil Services Exam – 2016 Prelims]
(a) 1, 2 and 3 only
(b) 2, 3 and 4 only
(c) 1, 4 and 5 only
(d) 1, 2, 3, 4 and 5
Answer: (b)
Explanation:
- The National Air Quality Index (AQI) was launched in New Delhi in September 2014, under the Swachh Bharat Abhiyan.
- The air quality index is composed of 8 pollutants: PM10, PM2. 5, Ozone (O3), Sulphur dioxide (SO2), nitrogen dioxide (NO2), carbon monoxide (CO), lead (Pb) and ammonia (NH3)
- Air Quality Index doesn’t include carbon dioxide and methane.
