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