In the cities of our country, which among the following atmospheric gases are normally considered in calculating the value of Air Quality Index?
- 1. Carbon dioxide
- 2. Carbon monoxide
- 3. Nitrogen dioxide
- 4. Sulfur dioxide
- 5. Methane
Select the correct answer using the code given below.
[amp_mcq option1=”1, 2 and 3 only” option2=”2, 3 and 4 only” option3=”1, 4 and 5 only” option4=”1, 2, 3, 4 and 5″ correct=”option2″]
This question was previously asked in
UPSC IAS – 2016
From the given list:
1. Carbon dioxide (CO2): Not included in standard AQI as it is primarily a greenhouse gas, not an air pollutant causing direct, immediate health impacts at typical ambient concentrations, unlike the others.
2. Carbon monoxide (CO): Included.
3. Nitrogen dioxide (NO2): Included.
4. Sulfur dioxide (SO2): Included.
5. Methane (CH4): Not included in standard AQI; it is a greenhouse gas.
Therefore, CO, NO2, and SO2 are among the atmospheric gases normally considered in calculating the value of Air Quality Index in cities.