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.
Correct Answer: Option B
Explanation
1. The Air Quality Index (AQI) in India, launched under the Swachh Bharat Abhiyan, is used to report air quality on a real-time basis.
2. The AQI considers eight pollutants: Particulate Matter (PM10 and PM2.5), Nitrogen dioxide (NO2), Sulfur dioxide (SO2), Carbon monoxide (CO), Ozone (O3), Ammonia (NH3), and Lead (Pb).
3. Comparing this list with the options provided:
- Statement 1: Carbon dioxide (CO2) is a major greenhouse gas but is not typically included as one of the criteria pollutants in the standard AQI calculation in India.
- Statement 2: Carbon monoxide (CO) is included in the AQI calculation.
- Statement 3: Nitrogen dioxide (NO2) is included in the AQI calculation.
- Statement 4: Sulfur dioxide (SO2) is included in the AQI calculation.
- Statement 5: Methane (CH4) is a greenhouse gas but is not included in the standard AQI calculation.
4. Therefore, the gases from the list that are normally considered in calculating the AQI value are Carbon monoxide (2), Nitrogen dioxide (3), and Sulfur dioxide (4).
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