Hard Trivia Questions & Answers: A 20-Question Challenge
Hard trivia should reward knowledge, not lucky guesses. This 20-question challenge mixes history, science, geography, language and culture. Every question has one clear answer and a short explanation, so it works for a quiz night, a classroom warm-up or a serious solo challenge.
For a different difficulty level, try our easy trivia questions, science trivia questions or the Trivia hub.
How to play
Read each question before revealing its answer. For a group game, award one point per correct answer and use the final five questions as a tie-breaker round.
Round 1: History and geography
1. Which treaty set the peace terms with Germany after World War I?
Show answer and explanation
Answer: The Treaty of Versailles.
Why: It was signed on June 28, 1919, between Germany and the Allied Powers. Separate treaties dealt with the other defeated Central Powers.
2. Which independent African empire defeated Italy at the Battle of Adwa in 1896?
Show answer and explanation
Answer: Ethiopia.
Why: Ethiopia’s victory helped preserve its independence during the European colonial era.
3. Which explorer led the expedition that first circumnavigated the globe, although he did not survive the voyage?
Show answer and explanation
Answer: Ferdinand Magellan.
Why: Magellan was killed in the Philippines; Juan Sebastián Elcano completed the expedition.
4. Which country contains the ancient rock-cut city of Petra?
Show answer and explanation
Answer: Jordan.
Why: Petra was a major city of the Nabataean kingdom.
5. What is the longest river in Europe?
Show answer and explanation
Answer: The Volga.
Why: It flows through Russia and empties into the Caspian Sea.
Round 2: Science and nature
6. Which element has the chemical symbol W?
Show answer and explanation
Answer: Tungsten.
Why: The symbol comes from the element’s older name, wolfram.
7. Which scientist formulated the three laws of planetary motion?
Show answer and explanation
Answer: Johannes Kepler.
Why: His laws describe how planets move around the Sun.
8. What is the deepest known point in Earth’s oceans?
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Answer: Challenger Deep.
Why: It lies within the Mariana Trench in the western Pacific Ocean.
9. What is the study of fungi called?
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Answer: Mycology.
Why: Mycology is a branch of biology focused on fungi.
10. Which blood vessels carry oxygenated blood from the lungs to the heart?
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Answer: The pulmonary veins.
Why: They carry oxygen-rich blood to the left atrium.
Round 3: Language, literature and art
11. Who wrote Thus Spoke Zarathustra?
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Answer: Friedrich Nietzsche.
Why: The philosophical work was published in parts during the 1880s.
12. Which novel begins with the line “Call me Ishmael”?
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Answer: Moby-Dick.
Why: Herman Melville’s novel was first published in 1851.
13. Which artist painted The Persistence of Memory?
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Answer: Salvador Dalí.
Why: The 1931 work is one of the best-known paintings of Surrealism.
14. What is a word formed from initial letters and pronounced as a word, such as NASA?
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Answer: An acronym.
Why: Acronyms differ from initialisms because they are pronounced as words.
15. Which language family includes Hindi, Spanish, Russian and English?
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Answer: Indo-European.
Why: Those languages belong to different branches of the same large family.
Round 4: Expert tie-breakers
16. Which sea has no coastline and is defined by ocean currents?
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Answer: The Sargasso Sea.
Why: It is an area of the North Atlantic bounded by major currents.
17. Which ancient wonder stood at Alexandria in Egypt?
Show answer and explanation
Answer: The Lighthouse of Alexandria, also called the Pharos.
Why: It was one of the Seven Wonders of the Ancient World.
18. Which empire was ruled by Mansa Musa in the 14th century?
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Answer: The Mali Empire.
Why: Mansa Musa is especially remembered for his pilgrimage to Mecca.
19. What is the SI unit of electrical resistance?
Show answer and explanation
Answer: The ohm.
Why: Its symbol is the Greek letter omega (Ω).
20. Which composer wrote The Four Seasons?
Show answer and explanation
Answer: Antonio Vivaldi.
Why: It is a set of four violin concertos.
What makes hard trivia fair?
- Use questions with one defensible answer.
- State a date when a fact could change.
- Mix subject areas so one specialist cannot dominate every round.
- Keep the hardest questions for the end or use them as tie-breakers.
Keep the quiz going
Continue with history trivia questions, science trivia questions, or more collections in our Trivia hub.
