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