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प्रश्न
Ozone day is observed on ______.
विकल्प
January 30
April 21
September 16
December 25
MCQ
रिक्त स्थान भरें
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उत्तर
Ozone day is observed on September 16.
Explanation:
World Ozone Day is observed every year on 16 September to spread awareness about protecting the ozone layer and preventing its depletion.
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