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Think you know everything? Prove it with these tough general knowledge questions!
1. What is the deepest lake in the world?
💡 Lake Baikal in Russia is 1,642 metres deep — the deepest lake on Earth and holds 20% of the world's fresh water.
2. Which element has the chemical symbol Au?
💡 Au comes from the Latin word "aurum" meaning gold. It has atomic number 79.
3. Which ancient wonder of the world still exists today?
💡 The Great Pyramid of Giza is the only one of the Seven Wonders of the Ancient World still standing.
4. Which gas makes up approximately 78% of Earth's atmosphere?
💡 Nitrogen (N₂) makes up about 78% of Earth's atmosphere, followed by oxygen at 21%.
5. How many teeth does an adult human have including wisdom teeth?
💡 A full adult set includes 32 teeth: 8 incisors, 4 canines, 8 premolars, 8 molars, and 4 wisdom teeth.
6. What is the currency of Switzerland?
💡 Switzerland uses the Swiss Franc (CHF), not the Euro, despite being surrounded by Eurozone countries.
7. Who invented the World Wide Web?
💡 Tim Berners-Lee invented the World Wide Web in 1989 while working at CERN in Switzerland.
8. What is the longest bone in the human body?
💡 The femur (thigh bone) is the longest and strongest bone in the human body.
9. Which organ in the human body is responsible for producing insulin?
💡 The pancreas produces insulin, a hormone that regulates blood sugar levels in the body.
10. Which country has the most natural lakes in the world?
💡 Canada has approximately 879,800 lakes — more than any other country in the world.
11. In what year was the United Nations founded?
💡 The United Nations was founded on October 24, 1945, after World War II ended.
12. What is the scientific name for the fear of spiders?
💡 Arachnophobia is the intense fear of spiders and other arachnids. It is one of the most common phobias.
13. What is the most abundant metal in Earth's crust?
💡 Aluminum makes up about 8% of Earth's crust, making it the most abundant metal found there.
14. What is the half-life of Carbon-14?
💡 Carbon-14 has a half-life of approximately 5,730 years, used in radiocarbon dating of ancient materials.
15. What is the smallest country in the world by area?
💡 Vatican City covers just 0.44 km², making it the smallest internationally recognized country.
16. Which planet has the most moons in our solar system?
💡 Saturn has 146 confirmed moons as of 2024 — the most of any planet in our solar system.
17. What is the capital city of Canada?
💡 Ottawa is the capital city of Canada, not Toronto which is the most populous city.
18. In which city was the first modern Olympic Games held?
💡 The first modern Olympic Games were held in Athens, Greece in April 1896.
19. How many symphonies did Ludwig van Beethoven compose?
💡 Beethoven composed 9 symphonies, with the famous 9th Symphony (Ode to Joy) being his final one.
20. What does the Latin phrase "Carpe Diem" mean?
💡 Carpe Diem is a Latin phrase from the poet Horace meaning "seize the day" or make the most of the present.