Top 100 Hard Quiz Questions With Answers
The ultimate 100-question gauntlet — tap any question to reveal its answer.
1. What is the chemical symbol for iron?
Answer: Fe
2. Which planet is known for its Great Red Spot?
Answer: Jupiter
3. What invisible force keeps us on the ground?
Answer: Gravity
4. What is the center of an atom called?
Answer: The nucleus
5. Which gas do humans need to breathe in?
Answer: Oxygen
6. What is the boiling point of water in Fahrenheit?
Answer: 212 degrees
7. Which scientist developed the theory of relativity?
Answer: Albert Einstein
8. What do you call animals that eat only plants?
Answer: Herbivores
9. What is the process by which plants make food?
Answer: Photosynthesis
10. How many chambers does the human heart have?
Answer: Four
11. What is the largest organ of the human body?
Answer: The skin
12. Which blood type is the universal donor?
Answer: O negative
13. What is known as the powerhouse of the cell?
Answer: The mitochondria
14. Which planet has the shortest day?
Answer: Jupiter, at about 10 hours
15. What is a light-year a measure of?
Answer: Distance — how far light travels in a year
16. Which vitamin do we get from sunlight?
Answer: Vitamin D
17. What is the pH of pure water?
Answer: 7, which is neutral
18. What are the three common states of matter?
Answer: Solid, liquid, and gas
19. Which metal sticks to a magnet?
Answer: Iron
20. What is Earth’s only natural satellite?
Answer: The Moon
21. In which year did America declare independence?
Answer: 1776
22. Who was the first woman to fly solo across the Atlantic?
Answer: Amelia Earhart
23. Which empire built the Colosseum?
Answer: The Roman Empire
24. Who was Britain’s Prime Minister during World War II?
Answer: Winston Churchill
25. Which country used to be called Siam?
Answer: Thailand
26. In which year did the Berlin Wall fall?
Answer: 1989
27. Who was the first Emperor of China?
Answer: Qin Shi Huang
28. Which ancient civilization invented the wheel?
Answer: The Mesopotamians
29. Who was the last active pharaoh of ancient Egypt?
Answer: Cleopatra
30. What was the name of Charles Darwin’s ship?
Answer: HMS Beagle
31. Which war ended in 1918?
Answer: World War I
32. Which ancient wonder of the world still stands today?
Answer: The Great Pyramid of Giza
33. Whose expedition first sailed all the way around the world?
Answer: Ferdinand Magellan’s
34. Who invented the movable-type printing press?
Answer: Johannes Gutenberg
35. Which city was split by a wall from 1961 to 1989?
Answer: Berlin
36. Who was the UK’s first female Prime Minister?
Answer: Margaret Thatcher
37. Which country gave the Statue of Liberty to America?
Answer: France
38. What is the capital of Japan?
Answer: Tokyo
39. What is the capital of Italy?
Answer: Rome
40. What is the capital of Spain?
Answer: Madrid
41. What is the capital of Argentina?
Answer: Buenos Aires
42. What is the capital of South Korea?
Answer: Seoul
43. What is the capital of New Zealand?
Answer: Wellington
44. What is the capital of Norway?
Answer: Oslo
45. What is the capital of Sweden?
Answer: Stockholm
46. What is the capital of Thailand?
Answer: Bangkok
47. What is the capital of India?
Answer: New Delhi
48. What is the smallest continent?
Answer: Australia
49. What is the largest country in the world by area?
Answer: Russia
50. What is the deepest trench in the ocean?
Answer: The Mariana Trench
51. Which two countries share the world’s longest border?
Answer: The United States and Canada
52. What is the capital of Russia?
Answer: Moscow
53. Which African country was once called Abyssinia?
Answer: Ethiopia
54. Which river flows through Egypt?
Answer: The Nile
55. What is the strait between Spain and Morocco called?
Answer: The Strait of Gibraltar
56. In which US state is the Grand Canyon?
Answer: Arizona
57. What is the capital of Hawaii?
Answer: Honolulu
58. Who wrote “Pride and Prejudice”?
Answer: Jane Austen
59. Who wrote “Moby-Dick”?
Answer: Herman Melville
60. Who wrote “The Great Gatsby”?
Answer: F. Scott Fitzgerald
61. Who wrote “Hamlet”?
Answer: William Shakespeare
62. Who painted “The Starry Night”?
Answer: Vincent van Gogh
63. Who painted melting clocks in “The Persistence of Memory”?
Answer: Salvador Dalí
64. Who sculpted the statue of David?
Answer: Michelangelo
65. Who wrote “The Odyssey”?
Answer: Homer
66. Who wrote “A Christmas Carol”?
Answer: Charles Dickens
67. Who wrote “Frankenstein”?
Answer: Mary Shelley
68. Who wrote “Dracula”?
Answer: Bram Stoker
69. Who wrote “The Hobbit”?
Answer: J.R.R. Tolkien
70. How many symphonies did Beethoven compose?
Answer: Nine
71. Who composed “The Four Seasons”?
Answer: Antonio Vivaldi
72. How often are the Olympic Games held?
Answer: Every four years
73. In which sport would you score a slam dunk?
Answer: Basketball
74. How many holes are in a full round of golf?
Answer: Eighteen
75. What is the national sport of Japan?
Answer: Sumo wrestling
76. Which sport is played with a puck?
Answer: Ice hockey
77. How long is a marathon?
Answer: 26.2 miles
78. In tennis, what is a score of zero called?
Answer: Love
79. How many players are on a baseball team?
Answer: Nine
80. What is the championship game of American football called?
Answer: The Super Bowl
81. Which chess piece moves in an L-shape?
Answer: The knight
82. What is the fastest bird in a dive?
Answer: The peregrine falcon
83. What is the largest reptile in the world?
Answer: The saltwater crocodile
84. Which is the only bird that can fly backwards?
Answer: The hummingbird
85. Name an egg-laying mammal.
Answer: The platypus
86. What is the tallest waterfall in the world?
Answer: Angel Falls in Venezuela
87. Which shark can live for around 400 years?
Answer: The Greenland shark
88. How many teeth does a typical adult human have?
Answer: 32
89. What is the fastest fish in the ocean?
Answer: The sailfish
90. Which animal has the strongest bite force?
Answer: The saltwater crocodile
91. What do you call a baby elephant?
Answer: A calf
92. What is the largest living land animal?
Answer: The African elephant
93. Which desert is the largest in the world?
Answer: The Antarctic Desert
94. What is the longest mountain range in the world?
Answer: The Andes
95. Which US state has the most volcanoes?
Answer: Alaska
96. Which planet is the hottest in our solar system?
Answer: Venus
97. How many colored rings are on the Olympic flag?
Answer: Five
98. What does the “F” in FIFA stand for?
Answer: Football
99. Which country invented table tennis?
Answer: England
100. What is the only sport played on the Moon?
Answer: Golf — an astronaut hit balls there in 1971
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About this trivia
This is it — the top 100 hard quiz questions with answers, the ultimate test for serious trivia players. These 100 hard quiz questions span science, history, world geography, arts and literature, and sports, moving from challenging to genuinely brutal. If you can score 70 or more, you're officially elite.
What makes this top 100 hard quiz questions with answers list special is its breadth: chemical symbols and world capitals sit alongside Oscar-winning boxers, ancient wonders, and record-breaking animals. Every answer hides behind a tap, so use it for solo training or as the championship round of your quiz night.
Take it in sections of 25, keep a running score, and come back to beat your best. Like everything on QuizPop, it's free forever with no sign-up. Miss a few? That's the point — every wrong answer is a new fact earned, and your next attempt always goes better. Good luck — you'll need it.
What are the hardest quiz questions? The hardest quiz questions combine obscure facts with tricky wording — like naming the strait between Spain and Morocco (Gibraltar) or the only bird that flies backwards (the hummingbird). This page gathers 100 of them with answers.
How should I use a 100-question trivia list? Split it into four rounds of 25 for a full quiz night, or tackle 10 a day as a daily brain workout. Track your score each time and watch it climb as the facts stick.
What topics do the hardest quiz questions cover? The toughest questions usually come from science (symbols, anatomy, physics), history (dates, empires, firsts), world capitals, arts and literature, and sports records — all five are covered in this top-100 list.