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