Chadwick discovers neutron
  • 1. Who discovered the neutron?
A) Ernest Rutherford
B) Marie Curie
C) Albert Einstein
D) James Chadwick
  • 2. When was the discovery of the neutron made?
A) 1945
B) 1920
C) 1932
D) 1958
  • 3. What is the role of a neutron in an atom?
A) To stabilize the nucleus
B) To form chemical bonds
C) To emit radiation
D) To generate electricity
  • 4. Which element did Chadwick use to discover the neutron?
A) Gold
B) Carbon
C) Beryllium
D) Iron
  • 5. Neutrons are found in the nucleus of atoms alongside which other particle?
A) Electrons
B) Quarks
C) Protons
D) Photons
  • 6. What is the electric charge of a neutron?
A) Positive
B) Neutral
C) Negative
D) Variable
  • 7. What subatomic particle did Chadwick's discovery help explain the presence of?
A) Proton
B) Electron
C) Positron
D) Neutron
  • 8. What is the typical kinetic energy of a neutron in a thermal nuclear reactor?
A) 0.025 eV
B) 0.1 eV
C) 1 MeV
D) 100 keV
  • 9. Why are neutrons important in nuclear reactors?
A) To create anti-particles
B) To sustain a nuclear chain reaction
C) To generate electricity directly
D) To absorb excess protons
  • 10. What type of radiation is emitted by a neutron?
A) Gamma rays
B) Beta particles
C) Alpha particles
D) Neutrons
  • 11. What is the interaction of neutrons with matter in neutron radiography?
A) Reflection and refraction
B) Ionization and excitation
C) Transmission and emission
D) Absorption and scattering
  • 12. What phenomena did Chadwick's discovery of the neutron contribute to in scientific research?
A) Improvement of rocket propulsion
B) Development of radar technology
C) Understanding nuclear structure
D) Advancement in computer programming
  • 13. Which particle shares similar stability roles in an atom as a neutron?
A) Neutrino
B) Boson
C) Proton
D) Electron
  • 14. What is the approximate mass of a neutron?
A) 2 atomic mass units
B) 0 atomic mass units
C) 1 atomic mass unit
D) 0.5 atomic mass unit
  • 15. What type of radiation did Chadwick use in his experiment?
A) Neutrinos
B) Alpha particles
C) Gamma rays
D) Beta particles
  • 16. What is the approximate size of a neutron in meters?
A) 1 x 10-6
B) 1 x 10-9
C) 1 x 10-15
D) 1 x 10-3
  • 17. What was Chadwick awarded for his discovery of the neutron?
A) Oscar Award
B) Grammy Award
C) Emmy Award
D) Nobel Prize in Physics
  • 18. What is the total number of neutrons and protons in an alpha particle?
A) 2
B) 3
C) 4
D) 6
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