Atomic And Nuclear Physics Hardest Quiz!

62 Questions | Total Attempts: 1031

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Atomic And Nuclear Physics Hardest Quiz! - Quiz

What we have here is considered atomic and nuclear physics hardest quiz! A lot of people are confused about what makes atomic and nuclear physics is centered on. While one focuses on the atom the other focuses n protons and neutrons in the nucleus. Do you know the different types of energy and how they are obtained? The quiz below will be a perfect refresher for you. Do give it a try and see how well you do!


Questions and Answers
  • 1. 
    In the Geiger-Marsden experiment, α particles are scattered by gold nuclei. The experimental results indicate that most α particles are
    • A. 

      Scattered only at small angles

    • B. 

      Scattered only at large angles

    • C. 

      Absorbed in the target

    • D. 

      Scattered back along the original direction.

  • 2. 
    A sample of radioactive carbon-14 decays into a stable isotope of nitrogen. As the carbon-14 decays, the rate at which the amount of nitrogen is produced.
    • A. 

      Decreases linearly with time

    • B. 

      Increases linearly with time

    • C. 

      Decreases exponentially with time

    • D. 

      Increases exponentially with time

  • 3. 
    Which one of the following provides direct evidence for the existence of discrete energy levels in an atom?
    • A. 

      The continuous spectrum of the light emitted by a white-hot metal

    • B. 

      The line emission spectrum of a gas at low pressure

    • C. 

      The emission of gamma radiation from radioactive atoms

    • D. 

      The ionization of gas atoms when bombarded by alpha particles

  • 4. 
    A sample of material initially contains atoms of only one radioactive isotope. Which one of the following quantities are reduced to one half of its initial value during a time equal to the half-life of the radioactive isotope?
    • A. 

      Total mass of the sample

    • B. 

      Total number of atoms in the sample

    • C. 

      Total number of nuclei in the sample

    • D. 

      Activity of the radioactive isotope in the sample

  • 5. 
    In a fission chain reaction
    • A. 

      Energy from one fission reaction causes further fission reactions

    • B. 

      Nuclei produced in one fission reaction cause further fission reactions

    • C. 

      Neutrons from one fission reaction cause further fission reactions

    • D. 

      Gamma radiation produced in one fission reaction causes further fission reactions

  • 6. 
    Which one of the following correctly identifies the atomic (proton) number and mass (nucleon) number of a nucleus that has neutrons n and protons p?   Atomic number Mass number A. p n B. p n + p C. n p D. n + p p
    • A. 

      A

    • B. 

      B

    • C. 

      C

    • D. 

      D

  • 7. 
    Isotopes provide evidence for the existence of
    • A. 

      Protons

    • B. 

      Electrons

    • C. 

      Nuclei

    • D. 

      Neutrons

  • 8. 
    An isotope of radium has a half-life of 4 days. A freshly prepared sample of this isotope contains N atoms. The time taken for 7N/8 of the atoms of this isotope to decay is
    • A. 

      32 days

    • B. 

      16 days

    • C. 

      12 days

    • D. 

      8 days

  • 9. 
    The presence of neutrons inside the nucleus is supported by the existence of
    • A. 

      Isotopes

    • B. 

      Orbiting electrons

    • C. 

      Gamma radiation

    • D. 

      Neutral atoms

  • 10. 
    The source of the Sun’s energy is
    • A. 

      Fission

    • B. 

      Radioactivity

    • C. 

      Fusion

    • D. 

      Ionization

  • 11. 
    The existence of isotopes provides evidence for the presence of
    • A. 

      Electrons in atomic energy levels

    • B. 

      Electrons in the nuclei of atoms

    • C. 

      Neutrons in the nuclei of atoms

    • D. 

      Protons in the nuclei of atoms

  • 12. 
    Ag-102, Ag-103, and Ag-104 are three isotopes of the element silver. Which one of the following is a true statement about the nuclei of these isotopes?
    • A. 

      All have the same mass

    • B. 

      All have the same number of nucleons

    • C. 

      All have the same number of neutrons

    • D. 

      All have the same number of protons

  • 13. 
    Radioactive decay is a random process. This means that
    • A. 

      A radioactive sample will decay continuously

    • B. 

      Some nuclei will decay faster than others

    • C. 

      It cannot be predicted how much energy will be released

    • D. 

      It cannot be predicted when a particular nucleus will decay

  • 14. 
    The number of nucleons in a nucleus is the number of
    • A. 

      Particles in the nucleus

    • B. 

      Neutrons in the nucleus

    • C. 

      Protons in the nucleus

    • D. 

      Protons plus neutrons in the nucleus

  • 15. 
    The emission and absorption spectra of different elements provides evidence for the existence of
    • A. 

      Isotopes

    • B. 

      Neutrons

    • C. 

      Protons

    • D. 

      Atomic energy levels

  • 16. 
    The nucleus of an atom contains protons. The protons are prevented from flying apart by
    • A. 

      The presence of orbiting electrons

    • B. 

      The presence of gravitational forces

    • C. 

      The presence of strong attractive nuclear forces

    • D. 

      The absence of Coulomb repulsive forces at nuclear distances

  • 17. 
    The unified mass unit is defined as the rest mass of
    • A. 

      A proton

    • B. 

      An atom of carbon-12 divided by 12

    • C. 

      An atom of carbon-12

    • D. 

      An atom of hydrogen-1

  • 18. 
    Which one of the following provides evidence for a nuclear model of the atom?
    • A. 

      Natural radioactive decay

    • B. 

      The ionizing properties of radiation

    • C. 

      The stability of certain elements

    • D. 

      The scattering of alpha particles by gold foil

  • 19. 
    The main source of the Sun’s energy is
    • A. 

      Chemical reaction

    • B. 

      Natural radioactivity

    • C. 

      Nuclear fusion

    • D. 

      Nuclear fission

  • 20. 
    Which of the following identifies the significant interaction(s) between nucleons inside the nucleus?
    • A. 

      Nuclear only

    • B. 

      Coulomb only

    • C. 

      Nuclear and Coulomb

    • D. 

      Gravitational, nuclear and Coulomb

  • 21. 
    A sample of a radioactive isotope of half-life T initially contains N atoms. Which one of the following gives the number of atoms of this isotope that have decayed after a time 3T?
    • A. 

      N/8

    • B. 

      N/3

    • C. 

      2N/3

    • D. 

      7N/8

  • 22. 
    Which one of the following correctly identifies the mass and momentum of a photon?   Mass Momentum A. zero zero B. zero non-zero C. non-zero zero D. non-zero non-zero
    • A. 

      A

    • B. 

      B

    • C. 

      C

    • D. 

      D

  • 23. 
    Which of the following provides evidence for the existence of neutrons?
    • A. 

      The Geiger-Marsden experiment

    • B. 

      Isotopes

    • C. 

      Natural radioactive decay

    • D. 

      Artificial transmutations of elements

  • 24. 
    The atomic line spectra of elements provides evidence for the existence of
    • A. 

      Photons

    • B. 

      Electrons

    • C. 

      Quantized energy states within nuclei

    • D. 

      Quantized energy states within atoms

  • 25. 
    Which of the following provides evidence for the existence of atomic energy levels?
    • A. 

      The absorption line spectra of gases

    • B. 

      The existence of isotopes of elements

    • C. 

      Energy release during fission reactions

    • D. 

      The scattering of α -particles by a thin metal film

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