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General knowledge · 12 questions
Science and nature quiz
Twelve questions for the curious. No lab coat needed.
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Question 1 of 12
Which planet is known as the Red Planet?
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- 1. Which planet is known as the Red Planet?
- A. Venus
- B. Jupiter
- C. Mars (answer)
- D. Mercury
- 2. What is the chemical symbol for gold?
- A. Go
- B. Gd
- C. Au (answer)
- D. Ag
- 3. How many bones are in the adult human body?
- A. 186
- B. 206 (answer)
- C. 226
- D. 246
- 4. What is the largest planet in our solar system?
- A. Saturn
- B. Jupiter (answer)
- C. Neptune
- D. Earth
- 5. What gas do plants absorb from the air for photosynthesis?
- A. Oxygen
- B. Nitrogen
- C. Carbon dioxide (answer)
- D. Hydrogen
- 6. What is the largest mammal on Earth?
- A. African elephant
- B. Blue whale (answer)
- C. Giraffe
- D. Sperm whale
- 7. Who developed the theory of general relativity?
- A. Isaac Newton
- B. Albert Einstein (answer)
- C. Stephen Hawking
- D. Niels Bohr
- 8. What is the hardest natural substance?
- A. Granite
- B. Quartz
- C. Diamond (answer)
- D. Titanium
- 9. How many hearts does an octopus have?
- A. One
- B. Two
- C. Three (answer)
- D. Four
- 10. At sea level, at what temperature does water boil in Celsius?
- A. 90
- B. 100 (answer)
- C. 110
- D. 120
- 11. Who is credited with discovering penicillin in 1928?
- A. Marie Curie
- B. Louis Pasteur
- C. Alexander Fleming (answer)
- D. Edward Jenner
- 12. Which organ in the human body is the largest?
- A. Liver
- B. Brain
- C. Lungs
- D. Skin (answer)
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