The environment is the foundation of our lives. From the air we breathe to the water we drink, everything we need comes from nature. But how much do we really know about it? Understanding the environment is not only important for awareness, but also for taking better care of our planet.
To make it fun and engaging, here’s a 20-question multiple-choice quiz on the environment. Try answering each question before looking at the answer. This quiz is perfect for students, teachers, or anyone who wants to brush up on their environmental knowledge.
1. Which gas is the main cause of the greenhouse effect?
a) Oxygen
b) Carbon dioxide
c) Nitrogen
d) Hydrogen
Answer: b) Carbon dioxide
2. Which of the following is a renewable source of energy?
a) Coal
b) Oil
c) Solar energy
d) Natural gas
Answer: c) Solar energy
3. Ozone layer protects us from which type of radiation?
a) Gamma rays
b) Infrared rays
c) Ultraviolet rays
d) X-rays
Answer: c) Ultraviolet rays
4. Which country is the largest emitter of carbon dioxide in the world?
a) India
b) USA
c) China
d) Russia
Answer: c) China
5. Which of the following is a non-biodegradable waste?
a) Paper
b) Plastic
c) Food
d) Cotton
Answer: b) Plastic
6. Which gas is commonly known as laughing gas?
a) Methane
b) Nitrous oxide
c) Carbon monoxide
d) Ammonia
Answer: b) Nitrous oxide
7. Which type of pollution is caused by vehicles?
a) Noise pollution
b) Air pollution
c) Soil pollution
d) All of the above
Answer: d) All of the above
8. Which is the most abundant gas in Earth’s atmosphere?
a) Oxygen
b) Nitrogen
c) Carbon dioxide
d) Hydrogen
Answer: b) Nitrogen
9. Which renewable energy source uses moving air to generate electricity?
a) Hydropower
b) Wind energy
c) Geothermal
d) Biomass
Answer: b) Wind energy
10. What is the main reason for global warming?
a) Deforestation
b) Excess rainfall
c) Soil erosion
d) Recycling
Answer: a) Deforestation
11. Which of these is the biggest reservoir of freshwater on Earth?
a) Rivers
b) Lakes
c) Glaciers and ice caps
d) Underground water
Answer: c) Glaciers and ice caps
12. Which international agreement aims to reduce greenhouse gas emissions?
a) Kyoto Protocol
b) Geneva Convention
c) Paris Treaty
d) Montreal Protocol
Answer: a) Kyoto Protocol
13. Which natural disaster is measured using the Richter scale?
a) Cyclone
b) Earthquake
c) Tsunami
d) Flood
Answer: b) Earthquake
14. Which of the following is the cleanest form of energy?
a) Solar
b) Coal
c) Oil
d) Natural gas
Answer: a) Solar
15. Which animal is considered a key species for maintaining forest balance?
a) Tiger
b) Elephant
c) Lion
d) Deer
Answer: b) Elephant
16. What is the process of growing plants without soil called?
a) Hydropower
b) Hydroponics
c) Photosynthesis
d) Irrigation
Answer: b) Hydroponics
17. Which layer of the atmosphere contains the ozone layer?
a) Troposphere
b) Stratosphere
c) Mesosphere
d) Exosphere
Answer: b) Stratosphere
18. Which of these is a greenhouse gas?
a) Nitrogen
b) Oxygen
c) Methane
d) Helium
Answer: c) Methane
19. Which of these practices helps in water conservation?
a) Deforestation
b) Rainwater harvesting
c) Over-irrigation
d) Dumping waste in rivers
Answer: b) Rainwater harvesting
20. Which international day is celebrated as World Environment Day?
a) 22 April
b) 5 June
c) 21 March
d) 10 December
Answer: b) 5 June
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