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