The Impossible Quiz – MCQ (with Answers)

1. Which of the following paradoxes involves a runner never reaching the finish line?
A) Schrödinger's Cat
B) Zeno's Paradox ✅
C) The Twin Paradox
D) Olbers' Paradox

2. What is considered mathematically impossible in Euclidean geometry?
A) Squaring a circle ✅
B) Drawing a triangle
C) Finding the midpoint
D) Constructing an angle

3. Which of the following numbers is considered "impossible" in real math?
A) 0
B) π
C) i (the square root of -1) ✅
D) 1/2

4. Which action violates the known laws of thermodynamics?
A) Melting ice
B) Flying
C) Creating a perpetual motion machine ✅
D) Boiling water

5. What is the name of the optical illusion that appears to be a staircase ascending or descending endlessly?
A) The Penrose Stairs ✅
B) Möbius Strip
C) Necker Cube
D) M.C. Escher Spiral

6. Which of these is considered physically impossible?
A) Walking on water on Earth ✅
B) Magnetism
C) Sound waves
D) Thermal expansion

7. What is impossible to do in a vacuum?
A) Float
B) Transmit sound ✅
C) Reflect light
D) Conduct electricity

8. What paradox states that an unstoppable force meeting an immovable object cannot coexist?
A) Bootstrap Paradox
B) Fermi Paradox
C) Immovable Object Paradox ✅
D) Trolley Problem

9. Which of these shapes is considered an "impossible object"?
A) Triangle
B) Square
C) Penrose Triangle ✅
D) Circle

10. According to Einstein, what is impossible to exceed?
A) Earth's rotation speed
B) Light speed ✅
C) Sound speed
D) Wind speed

11. What is logically impossible in the classic "liar paradox"?
A) Proving the Earth is round
B) Measuring time
C) A statement being both true and false ✅
D) Solving a puzzle

12. Which fictional object is often described as "bigger on the inside"?
A) The Millennium Falcon
B) The TARDIS ✅
C) The Batmobile
D) The One Ring

13. Which quantum thought experiment features a cat that is both dead and alive?
A) Maxwell’s Demon
B) Fermi Paradox
C) Schrödinger’s Cat ✅
D) Occam’s Razor

14. What is the name of the mathematical problem proven to have no general solution using only a compass and straightedge?
A) Copying a line
B) Doubling the cube ✅
C) Drawing a square
D) Cutting a circle

15. What scientific concept suggests particles can exist in multiple states at once?
A) Relativity
B) Uncertainty Principle
C) Superposition ✅
D) Entropy

16. What is impossible to do while holding your nose and humming?
A) Blink
B) Yawn
C) Hum properly ✅
D) Swallow

17. Which of the following is a logical impossibility?
A) Time travel
B) A round square ✅
C) Telepathy
D) Warp drive

18. What do paradoxes often challenge?
A) Emotions
B) Grammar
C) Logical reasoning ✅
D) Geography

19. What is the name of the shape that has only one side and one edge?
A) Torus
B) Cylinder
C) Möbius Strip ✅
D) Prism

20. What is impossible according to Gödel’s incompleteness theorems?
A) Math solving problems
B) Proving every true statement within a system ✅
C) Measuring π
D) Counting prime numbers