![The first International Day of Clean Air for blue skies is/was celebrated in which year?](https://www.gkseries.com/blog/wp-content/uploads/2022/09/The-first-International-Day-of-Clean-Air-for-blue-skies-is-was-celebrated-in-which-year.png)
Q. The first International Day of Clean Air for blue skies is/was celebrated in which year?
- 2017
- 2018
- 2019
- 2020
Answer: 2020
Answer: 2020
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