General Knowledge
Common Misconceptions Quiz
Think you know the truth? Many 'facts' everyone believes are actually wrong — test your myth-busting skills.
Think you know the truth? Many 'facts' everyone believes are actually wrong — test your myth-busting skills.
From the classroom to the dinner table, misconceptions are everywhere. Many so-called "facts" that people repeat confidently are completely wrong — and they've been passed down for generations. This quiz puts 50 of the most widespread myths to the test, spanning science, history, food, animals, and the human body.
Many myths survive because they sound plausible or because they were taught in schools decades ago. The idea that we only use 10% of our brains, that Vikings wore horned helmets, or that sugar makes kids hyperactive — these are all widely believed but factually incorrect. Debunking them is the first step to clearer thinking.
Each question challenges a popular myth and reveals the real truth behind it. You'll discover that the Great Wall of China isn't visible from space, Napoleon wasn't actually short, and cracking your knuckles doesn't cause arthritis. Every answer comes with a clear explanation so you can share the facts with friends.
No, this is one of the most persistent myths in popular science. Brain imaging studies show that we use virtually all parts of the brain, and most of the brain is active nearly all the time. Different areas are responsible for different functions, and even during sleep, significant brain activity continues.
Multiple double-blind studies have found no link between sugar intake and hyperactivity in children. The myth persists because sugary treats are often given at exciting events like birthday parties, where kids are already stimulated. Parents who believe the myth also tend to perceive more hyperactivity, regardless of what the child actually consumed.
No, goldfish have much better memories than people think. Research has shown that goldfish can remember things for at least five months. They can be trained to navigate mazes, push levers for food, and recognize their owners. The 3-second memory myth has no scientific basis whatsoever.
Last updated: March 2026