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The ultimate general knowledge test — 59 tough questions across every topic. Only the sharpest minds will score high. Are you up to the challenge?
1. Which country has the highest number of UNESCO World Heritage Sites?
💡 Italy has 58 UNESCO World Heritage Sites — the most of any country in the world.
2. Which planet is known as the Earth's twin due to similar size?
💡 Venus is nearly the same size as Earth and is often called Earth's twin, though its conditions are very different.
3. What is the largest organ in the human body?
💡 The skin is the largest organ, covering approximately 1.5–2 m² and serving as the body's first line of defence.
4. Which country was the first to give women the right to vote?
💡 New Zealand was the first self-governing country to grant women the right to vote in 1893.
5. In what year was the first iPhone released?
💡 Apple released the first iPhone on June 29, 2007. It revolutionized the smartphone industry.
6. What is the hardest rock type?
💡 Igneous rocks like granite are generally the hardest, formed from cooled magma or lava.
7. How long does it take light from the Sun to reach Earth?
💡 Light from the Sun takes approximately 8 minutes and 20 seconds to travel the 150 million km to Earth.
8. Which scientist proposed the theory of general relativity?
💡 Albert Einstein proposed the theory of general relativity in 1915, describing gravity as a curvature of spacetime.
9. What is the name of the galaxy that contains our solar system?
💡 Our solar system is located in the Milky Way galaxy, a barred spiral galaxy with over 200 billion stars.
10. Which country is the birthplace of the Olympic Games?
💡 The ancient Olympic Games originated in Olympia, Greece, around 776 BC.
11. What is the only country that is also a continent?
💡 Australia is the only nation that occupies an entire continent, often called the island continent.
12. What is the name of the longest wall ever built by humans?
💡 The Great Wall of China stretches over 21,000 km and was built over many centuries to protect against invasions.
13. What fraction of the Earth's surface is covered by water?
💡 Approximately 71% of Earth's surface is covered by water — mostly oceans, with fresh water making up only 3%.
14. What is the name of the world's largest living structure?
💡 The Great Barrier Reef off Australia's coast is the world's largest living structure, stretching over 2,300 km.
15. Which US president appears on the $100 bill?
💡 Benjamin Franklin, one of the Founding Fathers of the USA, appears on the $100 bill despite never being president.
16. How many bones does a newborn baby have?
💡 Newborn babies have approximately 270-300 bones, many of which fuse together as they grow into adulthood.
17. What is the name of the process by which plants make food using sunlight?
💡 Photosynthesis is the process by which plants use sunlight, CO₂, and water to produce glucose and oxygen.
18. What is the chemical symbol for iron?
💡 Iron's symbol Fe comes from "Ferrum," the Latin word for iron.
19. What is the most densely populated country in the world?
💡 Monaco has a population density of over 26,000 people per km², making it the most densely populated country.
20. Which country invented paper?
💡 Paper was invented in China around 105 AD by Cai Lun, a court official of the Han Dynasty.