Which of the following pollutants are considered for Air Quality Index estimation in India?

A. CO (Carbon Mono-oxide)
B. NO₂ (Nitrogen di-oxide)
C. C₆H₆ (Benzene)
D. Benzo (a) Pyrene
E. O₃ (Ozone)

Choose the correct answer from the options given below:

Correct option is C

The Air Quality Index (AQI) in India considers eight pollutants for its estimation. These are:

PM2.5 (Particulate Matter 2.5)
PM10 (Particulate Matter 10)
NO₂ (Nitrogen di-oxide)
SO₂ (Sulfur di-oxide)
CO (Carbon Mono-oxide)
O₃ (Ozone)
NH₃ (Ammonia)
Pb (Lead)

Looking at the options provided:

A. CO (Carbon Mono-oxide) - Yes
B. NO₂ (Nitrogen di-oxide) - Yes
C. C₆H₆ (Benzene) - While benzene is a recognized air pollutant and has national ambient air quality standards, it is not one of the eight pollutants specifically used for the calculation of the main Air Quality Index (AQI) in India.
D. Benzo (a) Pyrene - Similar to benzene, this is a pollutant but not included in the standard eight for AQI calculation.
E. O₃ (Ozone) - Yes

Therefore, from the given options, the pollutants considered for AQI estimation in India are A, B, and E.

The correct answer is A, B and E only.