Organizer: TCE EIACP PC-RP, Under Ministry of Environment, Forest and Climate Change, Government of India. Thiagarajar College of Engineering.
About the Quiz
- Theme: Global Action for a Cooler Planet. WORLD OZONE DAY 2026 Online Quiz Competition.
- Celebrate World Ozone Day by testing your knowledge and taking action for a cooler planet! To raise awareness on ozone layer protection, phasing down ozone-depleting substances, and adopting sustainable cooling solutions.
- Eligibility: Open to all!
- Perks: E-Certificate for ALL participants!
- Key Focus: Ozone layer preservation, energy-efficient cooling, and climate action.
- There are 15 questions, carrying 1 mark each.
- Select only one option that you consider the most appropriate answer.
- Read each question and all the options carefully before answering.
- Each participant is permitted to attempt the quiz only once
- Who can participate? School Students, College Students, Researchers, Faculties, General Public
- Last Date for Submission: 25th September 2026
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100% Correct Answers Available Here
Q1.The primary role of stratospheric ozone is to:
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1 point
A. Absorb most incoming infrared radiation from Earth
B. Absorb a significant fraction of harmful ultraviolet-B radiation
C. Prevent all solar radiation from reaching Earth
D. Regulate atmospheric oxygen concentration
Q2. Which chemical characteristic makes CFCs particularly damaging to the stratospheric ozone layer?
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1 point
A. They directly absorb visible radiation and destroy ozone
B. They react with nitrogen at the Earth’s surface
C. They release chlorine radicals after photodissociation by UV radiation
D. They readily dissolve in atmospheric water vapour
Q3. Which greenhouse gas contributes the largest share of human-caused warming among the following?.
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1 point
A. Carbon dioxide
B. Methane
C. Nitrous oxide
D. Ozone
Q4. Which group of substances was historically one of the major causes of stratospheric ozone depletion?
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1 point
A. CFCs
B. CO₂
C. SO₂
D. Methane
Q5. The Montreal Protocol primarily deals with:
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1 point
A. Marine plastic pollution
B. Reduction of industrial air pollution
C. Conservation of biological diversity
D. Protection of the ozone layer
Q6. The Kigali Amendment to the Montreal Protocol primarily aims to reduce the use of:
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1 point
A. Carbon monoxide
B. Hydrofluorocarbons (HFCs)
C. Sulphur dioxide
D. Nitrogen oxides
Q7. World Ozone Day is observed on 16 September because the date commemorates:
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1 point
A. The first discovery of the ozone hole
B. The adoption of the Kigali Amendment in 2016
C. The adoption/signing of the Montreal Protocol in 1987
D. The discovery of chlorofluorocarbons
Q8. The Montreal Protocol is widely regarded as an environmental success primarily because it:
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1 point
A. Eliminated all forms of atmospheric pollution
B. Established international cooperation to control ozone-depleting substances and enabled technological transitions
C. Focused exclusively on reducing carbon dioxide emissions
D. Banned all refrigeration and air-conditioning technologies
Q9. Which option represents the most preferred approach in the waste hierarchy?
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1 point
A. Disposal
B. Recycling
C. Waste prevention/reduction
D. Incineration
Q10. Ground-level ozone is best described as:
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1 point
A. A beneficial component of the stratospheric ozone layer
B. A secondary air pollutant formed through photochemical reactions
C. A primary pollutant emitted directly by trees
D. A harmless form of oxygen found near the Earth’s surface
Q11. Which approach best represents the idea of “Global Action for a Cooler Planet”?
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1 point
A. Addressing climate and environmental challenges through individual action alone
B. Increasing resource consumption to improve economic growth
C. Combining international cooperation, sustainable cooling, energy efficiency, resource conservation and responsible lifestyles
D. Focusing only on ozone depletion while ignoring climate change
Q12. Why can a relatively small amount of chlorine cause substantial ozone depletion?
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1 point
A. Chlorine permanently combines with nitrogen
B. Chlorine increases the thickness of the ozone layer
C. Chlorine is radioactive and continuously emits UV radiation
D. Chlorine participates in catalytic reaction cycles and can destroy many ozone molecules
Q13. The Kigali Amendment is significant because it:
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1 point
A. Replaced the Montreal Protocol
B. Established the Paris Agreement
C. Added controls on HFCs to the Montreal Protocol framework
D. Banned all refrigeration technologies
Q14. Why is energy efficiency important even when a refrigerant has zero ozone-depletion potential?
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1 point
A. Energy efficiency can reduce indirect greenhouse-gas emissions associated with electricity consumption
B. Energy efficiency converts HFCs into CFCs
C. Energy efficiency increases stratospheric chlorine
D. Energy efficiency directly creates ozone
Q15. Excessive exposure to UV-B radiation resulting from ozone depletion can increase the risk of:
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1 point
A. Cataracts and skin cancer
B. Respiratory infections and asthma
C. Cardiovascular disease
D. High blood pressure