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20 hard general knowledge quiz questions and answers for expert-level trivia fans across science, history and culture.
1. Which ancient wonder of the world stood in Alexandria, Egypt?
💡 The Lighthouse of Alexandria, one of the Seven Wonders of the Ancient World, guided sailors into the harbor.
2. Which treaty officially ended World War I?
💡 The Treaty of Versailles, signed in 1919, formally ended World War I and imposed heavy terms on Germany.
3. What process allows stars to produce energy through their cores?
💡 Stars generate energy through nuclear fusion, combining hydrogen atoms into helium under extreme pressure and heat.
4. Which country was divided into North and South along the 38th parallel?
💡 Korea was divided at the 38th parallel following World War II, leading to North and South Korea.
5. What is the study of the origin and history of words called?
💡 Etymology traces the origins and historical development of words and their meanings.
6. What is the capital of Kazakhstan?
💡 Astana (renamed Nur-Sultan and then back to Astana) has been Kazakhstan's capital since 1997.
7. Who wrote 'The Divine Comedy'?
💡 Dante Alighieri wrote 'The Divine Comedy' in the early 14th century, describing a journey through Hell, Purgatory, and Paradise.
8. What is the chemical formula for common table salt?
💡 Table salt is sodium chloride, with the chemical formula NaCl.
9. What term describes a triangle with all sides of different lengths?
💡 A scalene triangle has three sides of different lengths and three different angles.
10. Who developed the periodic table of chemical elements?
💡 Dmitri Mendeleev created the periodic table in 1869, organizing elements by atomic weight and properties.
11. Which empire was ruled by Suleiman the Magnificent?
💡 Suleiman the Magnificent ruled the Ottoman Empire during its peak in the 16th century.
12. Which country was the first to use paper currency?
💡 China introduced paper currency during the Tang and Song dynasties, centuries before it appeared in Europe.
13. Who was the longest-reigning monarch in British history?
💡 Queen Elizabeth II reigned for over 70 years, from 1952 until her death in 2022, the longest of any British monarch.
14. Which scientist is best known for the theory of natural selection?
💡 Charles Darwin proposed the theory of evolution by natural selection in his 1859 work 'On the Origin of Species'.
15. Which battle marked the final defeat of Napoleon Bonaparte?
💡 The Battle of Waterloo in 1815 ended Napoleon's rule and led to his final exile.
16. What is the name of the narrow strait separating Europe from Africa?
💡 The Strait of Gibraltar connects the Atlantic Ocean to the Mediterranean Sea, separating Spain from Morocco.
17. What is considered the smallest structural and functional unit of life?
💡 The cell is the basic unit of life; all living organisms are composed of one or more cells.
18. Who is credited with discovering penicillin?
💡 Alexander Fleming discovered penicillin in 1928, leading to the development of modern antibiotics.
19. What general term describes organisms that thrive in extreme environments?
💡 Extremophiles are organisms adapted to survive in conditions like extreme heat, cold, pressure, or salinity.
20. What is the term for light bending as it passes between different mediums?
💡 Refraction occurs when light changes speed and direction moving between materials of different density.