World of Knowledge: Fun Facts Quiz
Test your general knowledge with this fun and educational quiz covering science, history, geography and more!
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Quiz Questions & Answers
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Question 1: Which planet is known as the 'Red Planet'?
Venus
Jupiter
Mars
Mercury
Question 2: What is the largest organ in the human body?
Heart
Skin
Liver
Brain
Question 3: Which of these animals is not a mammal?
Dolphin
Snake
Bat
Whale
Question 4: What is the main gas that makes up Earth's atmosphere?
Oxygen
Carbon Dioxide
Nitrogen
Hydrogen
Question 5: Which continent is the largest by land area?
North America
Asia
Africa
Europe
Question 6: What is the hardest natural substance on Earth?
Gold
Iron
Diamond
Platinum
Question 7: Which of these inventions came first?
Television
Paper
Telephone
Radio
Question 8: What percentage of the human body is water?
45%
60%
75%
90%