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40 medium difficulty general knowledge questions to challenge your mind.
1. What organ produces insulin in the human body?
💡 The pancreas produces insulin which controls blood sugar levels. Failure causes diabetes.
2. How many bones are in the adult human body?
💡 Babies are born with 270-300 bones but many fuse during childhood leaving 206 in adults.
3. What is the capital of Australia?
💡 Most people wrongly say Sydney. Canberra was purpose-built as the capital in 1913.
4. What is the capital of Brazil?
💡 Most people think Rio de Janeiro but Brasília has been Brazil's capital since 1960.
5. Which blood type is the universal donor?
💡 O negative blood can be given to anyone regardless of their blood type.
6. Which gas makes up most of Earth's atmosphere?
💡 Earth's air is 78% nitrogen, 21% oxygen, and 1% other gases.
7. What is the longest bone in the human body?
💡 The femur (thigh bone) is the longest and strongest bone in the human body.
8. Which country has the most natural lakes?
💡 Canada has over 3 million lakes — more than any other country in the world.
9. What is the capital of Turkey?
💡 Most people say Istanbul but Ankara has been Turkey's capital since 1923.
10. Which country gifted the Statue of Liberty to the USA?
💡 France gifted the Statue of Liberty to the USA in 1886 as a symbol of friendship and freedom.