Gell-Mann discovers quark
  • 1. Who discovered quarks?
A) Erwin Schrödinger
B) Niels Bohr
C) Murray Gell-Mann
D) Richard Feynman
  • 2. Which group of particles did Gell-Mann propose were made up of quarks?
A) Hadrons
B) Leptons
C) Bosons
D) Fermions
  • 3. What are the three types of quarks identified by Gell-Mann initially?
A) Electron, Proton, Neutron
B) Up, Down, Strange
C) Red, Blue, Green
D) Photon, W, Z
  • 4. The down quark has what kind of electric charge?
A) -2/3
B) +1/3
C) +2/3
D) -1/3
  • 5. What is the color charge of a quark?
A) Black
B) Positive
C) Red, Blue, or Green
D) Yellow
  • 6. Which experiment provided the evidence for the existence of quarks?
A) Deep inelastic scattering
B) Photoelectric effect
C) Davisson-Germer experiment
D) Double-slit experiment
  • 7. Quarks are never observed in isolation due to what phenomenon?
A) Confinement
B) Annihilation
C) Decay
D) Disintegration
  • 8. What is the third 'strangeness' quantum number in particle physics used to classify quarks?
A) Isospin
B) Spin
C) Charm
D) Flavor
  • 9. Protons and neutrons are composed of which quarks?
A) Red and blue quarks
B) Top and bottom quarks
C) Up and down quarks
D) Strange and charm quarks
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