World Ozone Day Quiz | 2025 World Ozone Day Quiz

Choose the best answer from the four options given. When you've finished answering as many of the questions as you can, scroll down to the bottom of the page and check your answers by clicking 'Get Score'. Percentage score will be displayed along with right answers.

1.What is the molecular formula of ozone?
O2
O3
HO3
O4

2.The theme for World Ozone Day 2025
Montreal Protocol: Advancing Climate Actions
Montreal Protocol: Fixing the Ozone Layer and Reducing Climate Change
From Science to Global Action
Ozone for life: 35 years of ozone layer protection

3.Why is the ozone layer important?
Protection from Ultraviolet B rays
Give rise to Auroras
Cool earth surface
All of these

4. What is the main cause of ozone layer depletion?
Chlorofluorocarbons
Halogen- source gases
hydrochlorofluorocarbons
All of these

5.Where is the ozone hole located?
USA
Arctic Circle
Australia
Antarctica

6.When was the first ozone hole discovered?
1984
1985
1990
2000

7.Ozone depletion generally occurs in
Thermosphere
Mesosphere
Stratosphere
Ionosphere

8.Which international treaty is designed to protect the ozone layer?
Paris Treaty
Kyoto Protocol
Geneva Protocol
Montreal Protocol

9. Which Sustainable Development Goals (SDG) does the goal preservation of the ozone layer come under?
Sustainable Development Goal 11
Sustainable Development Goal 12
Sustainable Development Goal 13
Sustainable Development Goal 15

10. Which year is the ozone layer expected to return to its normal level if all precautions are taken?
2025
2045
2035
2050
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