Fill in the blank: The National Air Quality Index (AQI) is measured using ______ number of pollutants.
Eight
The National Air Quality Index was launched in 2014 and is monitored by the Central Pollution Control Board.
It considers eight pollutants: PM10, PM2.5, NO2, SO2, CO, O3, NH3 and Pb (lead).
Based on these, air quality is placed in six categories: Good, Satisfactory, Moderately Polluted, Poor, Very Poor and Severe.
Hence, Eight.
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Which of the following isnota common component of photo-chemical smog?
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Presence of which pathogenic microbe in water is indication of contamination?
Which of the following isnota vehicular pollutant?
