Think you know a little about everything? Take this quick general knowledge quiz and test yourself across science, geography, history, language, and everyday facts. You have 12 questions. Choose an answer for each one, keep track of your choices, and reveal the answer only after you commit.
THE IMMORTAL KNOWLEDGE CHALLENGE
12 questions · 3–5 minutes · No searching
How to play: Pick A, B, C, or D for every question. Write down your choices or remember them. Then tap each “Reveal answer” section to check your result. Give yourself one point for every correct answer.
Round 1: Science & the human body
1. Which planet is famous for its prominent ring system?
A) Mars B) Saturn C) Venus D) Mercury
Reveal answer
Correct answer: B) Saturn. Saturn’s spectacular rings are made mostly of countless pieces of ice and rock. Other giant planets have rings too, but Saturn’s are the most visually prominent.
2. Which gas do plants absorb from the atmosphere during photosynthesis?
A) Oxygen B) Nitrogen C) Carbon dioxide D) Hydrogen
Reveal answer
Correct answer: C) Carbon dioxide. Plants use carbon dioxide, water, and light energy to make sugars. Oxygen is released as a by-product of the process.
3. Which blood cells help the body fight infections?
A) Red blood cells B) White blood cells C) Platelets D) Plasma cells
Reveal answer
Correct answer: B) White blood cells. White blood cells are key parts of the immune system. Different types identify, attack, or help the body remember harmful germs.
Round 2: Geography & the world
4. What is the largest ocean on Earth?
A) Atlantic B) Indian C) Arctic D) Pacific
Reveal answer
Correct answer: D) Pacific. The Pacific Ocean is the largest and deepest ocean basin on the planet, covering more area than all Earth’s land combined.
5. What is the capital city of Japan?
A) Kyoto B) Osaka C) Tokyo D) Hiroshima
Reveal answer
Correct answer: C) Tokyo. Tokyo is Japan’s capital and a major center of government, business, culture, and transportation.
6. What is the name of the imaginary line at zero degrees latitude?
A) Prime Meridian B) Equator C) Tropic of Cancer D) International Date Line
Reveal answer
Correct answer: B) Equator. The Equator circles Earth halfway between the North and South Poles and divides the planet into the Northern and Southern Hemispheres.
Round 3: History, language & everyday knowledge
7. Which ancient civilization built Machu Picchu?
A) Maya B) Roman C) Inca D) Egyptian
Reveal answer
Correct answer: C) Inca. The Inca built Machu Picchu high in the Andes of present-day Peru during the 15th century.
8. Which language has the largest number of native speakers worldwide?
A) English B) Spanish C) Hindi D) Mandarin Chinese
Reveal answer
Correct answer: D) Mandarin Chinese. Mandarin has more native speakers than any other language. English has more total speakers when second-language speakers are included.
9. How many minutes are in two and a half hours?
A) 120 B) 135 C) 150 D) 180
Reveal answer
Correct answer: C) 150. Two hours are 120 minutes, and half an hour is 30 minutes. Together, that makes 150.
10. Which instrument measures atmospheric pressure?
A) Thermometer B) Barometer C) Hygrometer D) Anemometer
Reveal answer
Correct answer: B) Barometer. Barometers measure air pressure. Changes in atmospheric pressure can help meteorologists track changing weather conditions.
Bonus round: Nature & the natural world
11. What is the largest mammal on Earth?
A) African elephant B) Blue whale C) Giraffe D) Whale shark
Reveal answer
Correct answer: B) Blue whale. Blue whales are the largest animals known to have ever lived, reaching lengths of around 30 meters in some cases.
12. What is the hardest naturally occurring mineral on the Mohs scale?
A) Quartz B) Iron C) Diamond D) Granite
Reveal answer
Correct answer: C) Diamond. Diamond ranks 10 on the Mohs hardness scale, making it the hardest naturally occurring mineral on that scale.
Your final score
Count one point for each correct answer. There are 12 points available.
- 11–12: Knowledge Master. You brought serious range to the challenge.
- 8–10: Sharp Thinker. A strong result across several subjects.
- 5–7: Curious Mind. You know plenty—and found a few things to explore.
- 0–4: Warm-Up Round. Keep learning and come back for another challenge.
Challenge somebody else
Send this challenge to a friend, compare your scores, and see who earns the Knowledge Master title. To make it interesting, ask them to complete it without searching for answers.
Keep your curiosity going
If a question caught you off guard, keep exploring. These reads take you further into some of the topics covered here:
Sources and fact-checking
The answers in this challenge are based on established reference material. Use the links below to explore several of the science, geography, and history topics in greater depth. Some answers are simplified for a quick quiz; scientific explanations can be more detailed.
- NASA Solar System Exploration: Saturn
- NOAA Ocean Service: How big is the Pacific Ocean?
- UNESCO World Heritage Centre: Historic Sanctuary of Machu Picchu
- USGS: Mohs hardness scale
- MedlinePlus: Blood
- National Geographic Education: Equator
Explore more on The Immortal Content
- 20 Strange Facts About the Human Body That Sound Made Up
- The Hidden History of 10 Everyday Objects
- 12 Free Websites That Make Everyday Life Easier
The bottom line
A general-knowledge quiz is most useful when it turns curiosity into learning. Review the explanations for questions you missed, look up unfamiliar subjects and try again later rather than focusing only on the score. The goal is to leave with a few facts you can remember and use.
The bottom line
A quiz score is only a starting point. Review the explanations for questions you missed, explore unfamiliar topics and try another round later. The goal is to turn a quick challenge into something you actually remember.
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