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Q. National Air Quality Index includes which of the following gases? Select the correct answer using the code given below.


A

1, 2, 3, 4 and 5
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B

1, 2, 4 and 5 only
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C

2, 3 and 5 only
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D

1, 3 and 4 only
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Solution

The correct option is B
1, 2, 4 and 5 only
Explanation:

The National Air Quality Index (AQI) disseminates information on air quality in a form which can be easily understood by the general public. The measurement of air quality is based on eight pollutants, namely,
  • Particulate Matter (size less than 10 µm) or (PM10),
  • Particulate Matter (size less than 2.5 µm) or (PM2.5),
  • Nitrogen Dioxide (NO2),
  • Sulphur Dioxide (SO2),
  • Carbon Monoxide (CO),
  • Ozone (O3),
  • Ammonia  (NH3), and
  • Lead  (Pb)

Environmental Science

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