Q. Consider the following statements with regard to National Ambient Air Quality Standards (NAAQS):
1. It was first adopted to monitor outdoor air quality by CPCB
2. It monitors level of sulphur dioxide, nitrogen dioxide, carbon monoxide, carbon dioxide
Which of the above statements is/are correct?

[A] 1 only

[B] 2 only

[C] Both 1 and 2

[D] Neither 1 and 2

Answer: A
Notes:

Statement 2 is incorrect- It monitors 8 major pollutants – Particulate matters (PM2.5 and PM10), sulphur dioxide, nitrogen dioxide, carbon monoxide, benzene, ammonia and ozone. It does not include carbon dioxide. 

SourceTimes of India