![Which of the following is a secondary air pollutant](https://www.gkseries.com/blog/wp-content/uploads/2021/12/Which-of-the-following-is-a-secondary-air-pollutant-1.png)
Q. Which of the following is a secondary air pollutant?
- Sulphur dioxide
- Ozone
- Carbon monoxide
- Carbon dioxide
Answer. Ozone
Answer. Ozone
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