World Knowledge Quiz
Test your knowledge across various topics with questions that gradually increase in difficulty.
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Quiz Questions & Answers
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Question 1: What is the primary color that appears most frequently in national flags around the world?
Blue
Red
Green
Yellow
Question 2: Which of these animals can jump the highest relative to its body length?
Kangaroo
Cat
Flea
Grasshopper
Question 3: What percentage of the human body is made up of water?
60-65%
40-45%
75-80%
85-90%
Question 4: Which ancient civilization invented the concept of zero?
Greeks
Ancient Indians
Egyptians
Mayans
Question 5: What is the only metal that is liquid at room temperature?
Lead
Gallium
Mercury
Cesium
Question 6: Which psychological effect describes people's tendency to favor information that confirms their existing beliefs?
Confirmation bias
Dunning-Kruger effect
Availability heuristic
Anchoring bias
Question 7: What quantum physics phenomenon allows particles to affect each other instantaneously across any distance?
Superposition
Quantum tunneling
Quantum entanglement
Wave function collapse
Question 8: What is the name of the cognitive limit to the number of social relationships humans can effectively maintain?
Social ceiling
Dunbar's number
Network capacity
Relationship quotient
Question 9: Which philosophical paradox questions whether a ship that has had all its parts replaced remains the same ship?
Theseus's paradox
Zeno's paradox
Aristotle's dilemma
Plato's puzzle
Question 10: What is the term for the theoretical maximum amount of information that can be extracted from a black hole's surface area?
Event horizon data
Quantum information
Bekenstein bound
Hawking radiation