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