100 Hard Trivia Questions for Adults (With Answers)
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1. What is the chemical symbol for gold?
Answer: Au
2. Which planet has the most known moons?
Answer: Saturn
3. In which year did the Titanic sink?
Answer: 1912
4. Who wrote the novel “1984”?
Answer: George Orwell
5. What is the hardest natural substance on Earth?
Answer: Diamond
6. Which country has the largest population in the world?
Answer: India
7. What is the smallest prime number?
Answer: 2
8. Which element has the atomic number 1?
Answer: Hydrogen
9. In which country is the Great Wall located?
Answer: China
10. Who painted the Mona Lisa?
Answer: Leonardo da Vinci
11. What is the capital city of Australia?
Answer: Canberra
12. How many bones are in the adult human body?
Answer: 206
13. Which is the largest ocean on Earth?
Answer: The Pacific Ocean
14. In which year did World War II end?
Answer: 1945
15. Who was the first President of the United States?
Answer: George Washington
16. What is the currency of Japan?
Answer: The yen
17. Which gas do plants absorb from the air?
Answer: Carbon dioxide
18. Which river is traditionally considered the longest in the world?
Answer: The Nile
19. Who wrote “Romeo and Juliet”?
Answer: William Shakespeare
20. What is H2O more commonly known as?
Answer: Water
21. Which planet is known as the Red Planet?
Answer: Mars
22. In which ancient country were the Olympic Games born?
Answer: Greece
23. What is the largest hot desert in the world?
Answer: The Sahara
24. How many continents are there?
Answer: Seven
25. Which blood cells carry oxygen around the body?
Answer: Red blood cells
26. What is the approximate speed of light?
Answer: About 300,000 kilometers per second
27. Who discovered penicillin?
Answer: Alexander Fleming
28. Which country invented paper?
Answer: China
29. What is the capital of Canada?
Answer: Ottawa
30. Which language has the most native speakers?
Answer: Mandarin Chinese
31. What does “www” stand for?
Answer: World Wide Web
32. Which planet is closest to the Sun?
Answer: Mercury
33. What is the main ingredient in guacamole?
Answer: Avocado
34. Who wrote the Harry Potter book series?
Answer: J.K. Rowling
35. What is the largest mammal in the world?
Answer: The blue whale
36. Which city hosted the 2012 Summer Olympics?
Answer: London
37. What is the chemical symbol for silver?
Answer: Ag
38. How many strings does a violin have?
Answer: Four
39. Which country is both a country and a continent?
Answer: Australia
40. What is the tallest mountain in the world?
Answer: Mount Everest
41. Which organ in the human body produces insulin?
Answer: The pancreas
42. What is the capital of Egypt?
Answer: Cairo
43. Who painted the ceiling of the Sistine Chapel?
Answer: Michelangelo
44. What is the freezing point of water in Celsius?
Answer: 0 degrees
45. Which planet is famous for its bright rings?
Answer: Saturn
46. What is the largest island in the world?
Answer: Greenland
47. Who was the first person to walk on the Moon?
Answer: Neil Armstrong
48. In which year did humans first land on the Moon?
Answer: 1969
49. In which country is the Eiffel Tower?
Answer: France
50. What is the currency of the United Kingdom?
Answer: The pound sterling
51. How many players does a soccer team field?
Answer: Eleven
52. What does DNA stand for?
Answer: Deoxyribonucleic acid
53. Who wrote “To Kill a Mockingbird”?
Answer: Harper Lee
54. What is the capital of Brazil?
Answer: Brasília
55. Which US national bird appears on the Great Seal?
Answer: The bald eagle
56. What is 12 multiplied by 12?
Answer: 144
57. Which ancient civilization built the pyramids at Giza?
Answer: The Egyptians
58. What is the most abundant gas in Earth’s atmosphere?
Answer: Nitrogen
59. Who composed the famous Fifth Symphony?
Answer: Ludwig van Beethoven
60. Which desert covers most of northern Africa?
Answer: The Sahara Desert
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About this trivia
Looking for hard trivia questions for adults with answers that will actually challenge your quiz-night crew? You found them. This list of 60 hard trivia questions for adults covers science, history, geography, literature, and the arts — the classic categories where champions are made and streaks are broken. Every answer is hidden until you tap the question, so you can test yourself honestly or run the whole list as a quiz-night round.
What makes these hard trivia questions for adults genuinely tough is range: one moment you're naming the chemical symbol for silver, the next you're recalling which ocean liner sank in 1912. That variety is exactly what separates casual players from trivia winners. Work through them in order, keep score with friends, and see who cracks 40 out of 60.
Bookmark this page — new trivia lists land here regularly, and each one is free forever with no sign-up. Ready? Tap the first question below and prove you belong in the trivia hall of fame.
What are some hard trivia questions for adults? Great hard trivia questions for adults span science, history, geography, arts, and sports — like naming the chemical symbol for gold (Au) or the year the Titanic sank (1912). The list above gives you 60 of them, each with its answer hidden until you tap.
Where can I find hard trivia questions with answers? Right here — every question on this page hides its answer behind a tap, so you can quiz yourself or host a quiz night without peeking. Bookmark the page for your next trivia event.
How can I get better at trivia? Read widely, play regularly, and learn the classics: capitals, chemical symbols, Oscar winners, and world records come up constantly. Reviewing question-and-answer lists like this one is one of the fastest ways to build recall.