World Environment Day, observed every year on June 5, is a global platform to raise awareness and encourage action for the protection of the environment. In 2025, this important day takes on even greater relevance as the world faces increasing challenges from climate change, pollution, deforestation, and biodiversity loss.

One of the most engaging ways to celebrate this occasion is through interactive quizzes, which are perfect for students, educators, environmental enthusiasts, and general readers. In this article, we present 50+ World Environment Day Quiz Questions and Answers, categorized by difficulty and topic.

Theme of World Environment Day 2025

The theme for World Environment Day 2025 is:

“Restore Nature, Rebuild the Future”

This year’s theme emphasizes the urgent need to restore degraded ecosystems, reverse biodiversity loss, and create a sustainable future. It invites individuals and governments to take active steps toward ecosystem restoration, a key component of climate and environmental recovery.

Why Celebrate World Environment Day with a Quiz?

• Increases awareness about pressing environmental issues.
• Promotes sustainable thinking among students and communities.
• Encourages eco-friendly habits in a fun and interactive way.
• Tests your knowledge of ecology, climate change, and global policies.

World Environment Day Quiz: 50+ Questions and Answers

We’ve divided this mega quiz into five sections:

• Section A: General Knowledge (Easy)
• Section B: Climate Change and Pollution
• Section C: Biodiversity and Ecosystems
• Section D: India-Specific Environment Quiz
• Section E: Environmental Days, Symbols, and Global Agreements

Section A: General Knowledge (Easy)

1. When is World Environment Day celebrated?
   – June 5
2. Which organization leads the World Environment Day celebrations?
   – United Nations Environment Programme (UNEP)
3. What was the first year of World Environment Day?
   – 1974
4. Which country hosted the first World Environment Day?
   – United States
5. What is the symbol of recycling?
   – Three chasing arrows forming a triangle
6. What gas do trees absorb from the atmosphere?
   – Carbon dioxide (CO₂)
7. Which layer of the atmosphere protects us from UV rays?
   – Ozone layer
8. What is the full form of UNEP?
   – United Nations Environment Programme
9. Name one non-renewable resource.
   – Coal
10. Which continent has the largest rainforest?
    – South America (Amazon Rainforest)

Section B: Climate Change and Pollution

11. What is the major greenhouse gas responsible for climate change?
    – Carbon dioxide
12. What is global warming?
    – The increase in Earth’s average temperature due to greenhouse gases
13. Which gas is primarily responsible for ozone depletion?
    – Chlorofluorocarbons (CFCs)
14. Which human activity contributes most to air pollution?
    – Burning fossil fuels
15. What does the term ‘carbon footprint’ mean?
    – The total greenhouse gases emitted by an individual or organization
16. Name a renewable source of energy.
    – Solar energy
17. Which country emits the most CO₂ globally?
    – China
18. What is the term for the melting of ice caps due to climate change?
    – Glacial retreat
19. Which ocean is currently facing a plastic pollution crisis known as the ‘plastic soup’?
    – Pacific Ocean
20. What is e-waste?
    – Electronic waste

Section C: Biodiversity and Ecosystems

21. What is biodiversity?
    – The variety of life forms on Earth
22. Which is the most diverse biome on Earth?
    – Rainforest
23. Name an endangered animal found in India.
    – Bengal Tiger
24. What is an ecosystem?
    – A community of organisms interacting with their environment
25. Which biome is known as the “lungs of the Earth”?
    – Amazon Rainforest
26. What is deforestation?
    – Clearing of forests for agriculture or development
27. Why are bees important to biodiversity?
    – They help pollinate plants
28. What are mangroves?
    – Coastal forests that grow in saltwater
29. Which animal is considered a keystone species?
    – Wolf (regulates the ecosystem)
30. What is the Red List?
    – A list of endangered species published by the IUCN

Section D: India-Specific Environment Quiz

31. Which river is considered the most polluted in India?
    – Yamuna
32. Which Indian state is known for eco-tourism?
    – Kerala
33. Name India’s first national park.
    – Jim Corbett National Park
34. Which city in India is known for high air pollution levels?
    – Delhi
35. Which Indian project aimed at planting trees to combat deforestation?
    – Green India Mission
36. Which act in India is related to the protection of wildlife?
    – Wildlife Protection Act, 1972
37. What is the Chipko Movement?
    – A forest conservation movement where people hugged trees
38. Which Indian city banned plastic completely in 2020?
    – Sikkim
39. What is Project Tiger?
    – A conservation program to save tigers in India
40. Which Indian environmentalist is known as the “Waterman of India”?
    – Rajendra Singh

Section E: Environmental Days, Symbols, and Global Agreements

41. What is the theme of Earth Day 2025?
    – Answer based on official announcement (to be updated)
42. What was the Paris Agreement?
    – A 2015 climate pact to reduce global warming
43. What is the Kyoto Protocol?
    – An international treaty to control greenhouse gas emissions
44. Which country hosted World Environment Day 2023?
    – Côte d’Ivoire
45. What is Earth Hour?
    – An event encouraging people to turn off lights for one hour
46. Which day is celebrated as World Water Day?
    – March 22
47. What does the green color in the recycling symbol represent?
    – Sustainability and eco-friendliness
48. What is Agenda 21?
    – A global action plan for sustainable development
49. Which summit introduced the concept of sustainable development?
    – Earth Summit, Rio de Janeiro, 1992
50. What does ‘Net Zero’ mean in climate goals?
    – Balancing emitted and removed carbon from the atmosphere
51. Which UN goal focuses on climate action?
    – Sustainable Development Goal 13 (SDG 13)

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📘 Conclusion

World Environment Day 2025 is more than just a celebration—it’s a call to action for every individual to contribute to restoring nature and rebuilding a sustainable future. Quizzes like these are excellent tools to spark curiosity and deepen our understanding of the Earth’s most urgent environmental issues.

Encourage your school, college, workplace, or community to host a quiz competition this June 5th. Let’s spread knowledge and drive action—because knowledge is the first step toward change.