Which of the following is a secondary pollutant(1) CO(2) CO2(3) SO2(4)

1.	Which of the following is a secondary pollutant(1) CO(2) CO2(3) SO2(4) O3
Answer» The correct option is(4) O₃ Explanation: Ozone (O₃) is a secondary pollutant as it is formed by the reaction amongst the primary pollutants. On the other hand, SO₂ is a primary pollutant. These pollutants persist in the environment in the form they are passed into it. CO is a qualitative pollutant. It is considered as pollutant only when its concentration reaches beyond a threshold value in the environment. CO₂ is a quantitative as well as a primary pollutant.

Which of the following is a secondary pollutant(1) CO(2) CO2(3) SO2(4) O3

Answer»

The correct option is(4) O₃

Explanation:

Ozone (O₃) is a secondary pollutant as it is formed by the reaction amongst the primary pollutants. On the other hand, SO₂ is a primary pollutant. These pollutants persist in the environment in the form they are passed into it. CO is a qualitative pollutant. It is considered as pollutant only when its concentration reaches beyond a threshold value in the environment. CO₂ is a quantitative as well as a primary pollutant.

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Which of the following is a secondary pollutant(1) CO(2) CO2(3) SO2(4) O3

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