1. : Which gas is the primary cause of the greenhouse effect?
(A) Oxygen
(B) Nitrogen
(C) Carbon dioxide
(D) Helium
2. : Which layer of the atmosphere contains the ozone layer?
(A) Troposphere
(B) Stratosphere
(C) Mesosphere
(D) Thermosphere
3. : The study of interactions between organisms and their environment is called?
(A) Biology
(B) Ecology
(C) Zoology
(D) Geology
4. : Which of the following is a non-renewable resource?
(A) Wind
(B) Solar energy
(C) Coal
(D) Biomass
5. : Deforestation leads to which major environmental problem?
(A) Ozone formation
(B) Global warming
(C) Acid rain
(D) Soil fertility increase
6. : Which protocol was signed to protect the ozone layer?
(A) Montreal Protocol
(B) Kyoto Protocol
(C) Paris Agreement
(D) Rio Declaration
7. : Which gas causes acid rain when released into the atmosphere?
(A) Methane
(B) Nitrogen dioxide
(C) Carbon monoxide
(D) Hydrogen
8. : Which of the following is considered the most sustainable energy source?
(A) Oil
(B) Coal
(C) Wind energy
(D) Nuclear energy
9. : The term “biodiversity” refers to?
(A) Number of people in a region
(B) Variety of life forms in an area
(C) Rate of population growth
(D) Quantity of forests
10. : Which is the main cause of water pollution in rivers?
(A) Industrial waste
(B) Earthquakes
(C) Volcanic eruptions
(D) Landslides
11. : Which layer of the Earth is responsible for tectonic activity?
(A) Inner core
(B) Outer core
(C) Mantle
(D) Crust
12. : The term “EIA” in environmental science stands for?
(A) Environmental Impact Assessment
(B) Environmental Internal Analysis
(C) Earth Integrated Action
(D) Environmental Information Act
13. : The largest source of renewable energy in the world is?
(A) Solar energy
(B) Wind energy
(C) Hydropower
(D) Biomass
14. : Which of the following is a biodegradable waste?
(A) Plastic
(B) Glass
(C) Vegetable peels
(D) Metal cans
15. : The main component of smog is?
(A) Carbon dioxide
(B) Sulfur dioxide
(C) Ozone
(D) Hydrogen peroxide
16. : Which country hosted the first Earth Summit in 1992?
(A) USA
(B) Brazil
(C) India
(D) France
17. : The process of converting waste into reusable material is called?
(A) Recycling
(B) Incineration
(C) Dumping
(D) Composting
18. : Which of the following is an effect of noise pollution?
(A) Lung cancer
(B) Hearing loss
(C) Skin irritation
(D) Water contamination
19. : Which of the following is a greenhouse gas?
(A) Argon
(B) Oxygen
(C) Methane
(D) Neon
20. : Which disaster is caused by movement along fault lines?
(A) Flood
(B) Earthquake
(C) Tsunami
(D) Cyclone
21. : What is the main cause of ozone depletion?
(A) Carbon dioxide
(B) Methane
(C) CFCs
(D) Nitrogen
22. : The term “carbon footprint” refers to?
(A) Total carbon in soil
(B) Carbon released by industries only
(C) Total greenhouse gases emitted by an individual or organization
(D) Carbon content in plants
23. : Which of the following is an example of a renewable resource?
(A) Petroleum
(B) Natural gas
(C) Wind
(D) Uranium
24. : The uppermost fertile layer of soil is called?
(A) Subsoil
(B) Bedrock
(C) Humus
(D) Topsoil
25. : Kyoto Protocol is mainly related to?
(A) Biodiversity conservation
(B) Reduction of greenhouse gases
(C) Ozone layer protection
(D) Waste management
26. : Which of the following is not a fossil fuel?
(A) Coal
(B) Oil
(C) Natural gas
(D) Geothermal energy
27. : Which energy source is obtained from the Earth’s internal heat?
(A) Biomass
(B) Solar
(C) Geothermal
(D) Hydropower
28. : Which of the following causes global warming?
(A) Increase in oxygen
(B) Increase in carbon dioxide
(C) Decrease in nitrogen
(D) Decrease in sulfur
29. : The loss of large areas of forest is called?
(A) Reforestation
(B) Afforestation
(C) Deforestation
(D) Desertification
30. : Which of the following is an endangered species?
(A) House Sparrow
(B) Blue Whale
(C) Pigeon
(D) Goat