Ozone Day Quiz || Quiz on Montreal Protocol, Ozone Hole

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1.International Day for the Preservation of the Ozone Layer is celebrated annually on which date?
August 16
September 16
December 16
June 5

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.The 'ozone hole' is not a literal hole, but an area of severely thinned ozone concentration. Over which geographical location is this phenomenon most pronounced?
USA
Arctic Circle
Australia
Antarctica

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

7.In which layer of the Earth's atmosphere is the majority of the ozone layer located?
Thermosphere
Mesosphere
Stratosphere
Ionosphere

8.Which international treaty, signed in 1987, aimed to phase out the production of ozone-depleting substances?
Paris Treaty
Kyoto Protocol
Geneva Protocol
Montreal Protocol

9. The Antarctic ozone hole typically forms during which season in the Southern Hemisphere?
Summer (December-February)
Autumn (March-May)
Winter and Spring (June-November)
All year round

10. The ozone hole is defined as the area where ozone column values are below how many Dobson Units (DU)?
100 DU
500 DU
150 DU
220 DU
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