30 common knowledge questions people often get wrong
Quick answer: These 30 questions look easy, but the answer most people give is wrong. Each one shows the common wrong answer, the correct answer and a short explanation.
Why we get these wrong
Many wrong answers come from films, school simplifications or the biggest city being mistaken for the capital. Learning the real answer is satisfying and great for quizzes. For more surprising facts, see our true-or-false questions.
Questions 1–10: capitals and places
Capital cities are the biggest trap. See the full list of capitals people get wrong.
| # | Question | Common wrong answer | Correct answer |
|---|---|---|---|
| 1 | What is the capital of Australia? | Sydney | Canberra |
| 2 | What is the capital of Canada? | Toronto | Ottawa |
| 3 | What is the capital of Turkey? | Istanbul | Ankara |
| 4 | What is the capital of Brazil? | Rio de Janeiro | Brasília |
| 5 | What is the capital of Morocco? | Casablanca | Rabat |
| 6 | What is the capital of Nigeria? | Lagos | Abuja |
| 7 | What is the capital of the UAE? | Dubai | Abu Dhabi |
| 8 | What is the largest desert in the world? | The Sahara | Antarctica |
| 9 | How many senses do humans have? | Five | More than five, including balance, temperature and pain |
| 10 | What colour is a polar bear’s skin? | White | Black |
Questions 11–20: science and nature
| # | Question | Common wrong answer | Correct answer |
|---|---|---|---|
| 11 | Which is the hottest planet? | Mercury | Venus |
| 12 | Which mountain is tallest from base to peak? | Mount Everest | Mauna Kea, Hawaii |
| 13 | How long is a goldfish’s memory? | Three seconds | Months |
| 14 | Who invented the light bulb? | Thomas Edison | Several inventors; Edison made the first practical long-lasting one |
| 15 | Which language has the most native speakers? | English | Mandarin Chinese |
| 16 | Which country has the most pyramids? | Egypt | Sudan |
| 17 | What do camels store in their humps? | Water | Fat |
| 18 | What colour is blood inside your veins? | Blue | Red, always |
| 19 | What is the largest country in Africa? | Sudan or Nigeria | Algeria |
| 20 | Which planet is closest to Earth on average? | Venus | Mercury |
Questions 21–30: everything else
| # | Question | Common wrong answer | Correct answer |
|---|---|---|---|
| 21 | Which country has the largest population? | China | India, since 2023 |
| 22 | Where were fortune cookies created? | China | The United States |
| 23 | What is the national animal of Scotland? | The lion or red deer | The unicorn |
| 24 | What kind of animal is a koala? | A bear | A marsupial |
| 25 | Which is the smallest continent? | Europe | Australia |
| 26 | Does water drain the other way in the Southern Hemisphere? | Yes | No; the shape of the basin decides the direction |
| 27 | Where do Panama hats come from? | Panama | Ecuador |
| 28 | Which metal conducts electricity best? | Copper | Silver |
| 29 | What causes the seasons? | Earth’s distance from the Sun | The tilt of Earth’s axis |
| 30 | How many countries make up the United Kingdom? | One | Four: England, Scotland, Wales and Northern Ireland |
Frequently asked questions
What is the capital of Australia?
Canberra, not Sydney.
What is the largest desert in the world?
Antarctica. The Sahara is the largest hot desert.
Which country has the most pyramids?
Sudan, with more than 200.