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