1. : What is the main cause of global warming?
(A) Deforestation
(B) Greenhouse gases
(C) Ozone depletion
(D) Acid rain
2. : Which gas is primarily responsible for ozone layer depletion?
(A) Carbon dioxide
(B) Methane
(C) Chlorofluorocarbons (CFCs)
(D) Nitrous oxide
3. : Which of the following is a renewable source of energy?
(A) Coal
(B) Oil
(C) Solar energy
(D) Natural gas
4. : The term “acid rain” was first used by?
(A) Charles Keeling
(B) Svante Arrhenius
(C) Robert Angus Smith
(D) Rachel Carson
5. : Which gas is the most abundant greenhouse gas in the atmosphere?
(A) Carbon dioxide
(B) Water vapor
(C) Methane
(D) Nitrous oxide
6. : Which country hosted the first Earth Summit in 1992?
(A) USA
(B) Brazil
(C) Sweden
(D) Japan
7. : Which of the following is a non-biodegradable pollutant?
(A) Paper
(B) Plastic
(C) Food waste
(D) Cotton
8. : The Kyoto Protocol is related to?
(A) Ozone depletion
(B) Biodiversity conservation
(C) Climate change
(D) Deforestation
9. : Which type of pollution is caused by excessive fertilizers in water bodies?
(A) Thermal pollution
(B) Noise pollution
(C) Eutrophication
(D) Acidification
10. : Which layer of the atmosphere contains the ozone layer?
(A) Troposphere
(B) Stratosphere
(C) Mesosphere
(D) Thermosphere
11. : Deforestation mainly leads to?
(A) Soil erosion
(B) Earthquakes
(C) Volcanic eruptions
(D) Tsunamis
12. : Which of the following is a primary air pollutant?
(A) Sulfur dioxide
(B) Ozone
(C) Smog
(D) PAN (Peroxyacetyl Nitrate)
13. : The main component of photochemical smog is?
(A) Ozone
(B) Methane
(C) Carbon monoxide
(D) Nitrogen gas
14. : Which of the following is an effect of noise pollution?
(A) Asthma
(B) Hearing loss
(C) Skin cancer
(D) Diabetes
15. : Which renewable energy is derived from Earth’s internal heat?
(A) Biomass
(B) Wind energy
(C) Geothermal energy
(D) Hydropower
16. : The process of converting waste materials into reusable objects is called?
(A) Composting
(B) Incineration
(C) Recycling
(D) Landfilling
17. : Which element is most responsible for Minamata disease?
(A) Lead
(B) Mercury
(C) Arsenic
(D) Cadmium
18. : What does “sustainable development” mean?
(A) Development without using resources
(B) Development at the cost of environment
(C) Development that meets present needs without harming future generations
(D) Development using only fossil fuels
19. : Which gas is known as “laughing gas”?
(A) Nitrogen dioxide
(B) Carbon monoxide
(C) Nitrous oxide
(D) Methane
20. : Which energy is generated from moving water?
(A) Wind energy
(B) Hydropower
(C) Geothermal
(D) Nuclear
21. : Which is the largest source of renewable energy worldwide?
(A) Wind power
(B) Hydropower
(C) Solar power
(D) Biomass
22. : Which of the following contributes most to global warming?
(A) Nitrous oxide
(B) Carbon dioxide
(C) Methane
(D) Ozone
23. : Which of these is an example of an invasive species?
(A) Bamboo in Asia
(B) Water hyacinth
(C) Mango tree
(D) Neem tree
24. : Which protocol banned the use of CFCs to protect the ozone layer?
(A) Kyoto Protocol
(B) Montreal Protocol
(C) Paris Agreement
(D) Basel Convention
25. : Which is considered the “lungs of the Earth”?
(A) Sahara Desert
(B) Amazon Rainforest
(C) Himalayas
(D) Arctic Tundra