Practice test

Radioactivity and nuclear energy - Test Set 6

Review 20 exam-focused questions with detailed explanations, then start the interactive test when you are ready.

20 questions

Questions and explanations

  1. Question 1

    The process responsible for solar energy is:
    1. Nuclear fission
    2. Chemical reaction
    3. Nuclear fusion
    4. Combustion
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  2. Question 2

    What is the ionizing power of alpha particles compared to others?
    1. Lowest
    2. Highest
    3. Medium
    4. None
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  3. Question 3

    In nuclear reactors, heavy water is used as a:
    1. Fuel
    2. Moderator
    3. Coolant
    4. Absorber
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  4. Question 4

    What is the approximate half-life of Carbon-14?
    1. 5730 years
    2. 100 years
    3. 1000 years
    4. 1 million years
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  5. Question 5

    In nuclear fission, which particle initiates the reaction?
    1. Alpha particle
    2. Neutron
    3. Proton
    4. Gamma photon
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  6. Question 6

    Which of the following isotopes is used in brain tumor detection?
    1. Gallium-67
    2. Xenon-133
    3. Iodine-125
    4. Sodium-24
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  7. Question 7

    What is the speed of beta particles compared to alpha particles?
    1. Lower
    2. Equal
    3. Higher
    4. Zero
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  8. Question 8

    Which nuclear bomb was based on nuclear fusion?
    1. Hiroshima bomb
    2. Nagasaki bomb
    3. Hydrogen bomb
    4. Atom bomb
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  9. Question 9

    Who first proposed the concept of atomic nucleus?
    1. Bohr
    2. J.J. Thomson
    3. Rutherford
    4. Chadwick
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  10. Question 10

    Which of the following is used in smoke detectors?
    1. Americium-241
    2. Carbon-14
    3. Uranium-235
    4. Cobalt-60
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  11. Question 11

    Which of the following is an example of controlled nuclear fission?
    1. Atomic bomb
    2. Hydrogen bomb
    3. Nuclear reactor
    4. X-ray machine
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  12. Question 12

    What is the product of the fusion of two deuterium nuclei?
    1. Helium
    2. Uranium
    3. Neutron
    4. Carbon
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  13. Question 13

    Which of the following isotopes is used in radiotherapy for eye treatment?
    1. Cobalt-60
    2. Iodine-125
    3. Xenon-133
    4. Radium-226
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  14. Question 14

    The strong nuclear force that binds nucleons together acts at:
    1. Long distances only
    2. Only on electrons
    3. Short range (~1 fm)
    4. Infinite range
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  15. Question 15

    Which of the following best describes Beta radiation?
    1. Fast-moving helium nuclei
    2. Electrons emitted from nucleus
    3. Photons of high energy
    4. Neutrons with high velocity
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  16. Question 16

    The radioisotope Xenon-133 is used in the diagnosis of which organ?
    1. Liver
    2. Thyroid
    3. Lungs
    4. Brain
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  17. Question 17

    Which of the following elements undergoes radioactive disintegration in the Uranium series?
    1. Thorium
    2. Lead
    3. Radium
    4. Neon
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  18. Question 18

    The nuclear binding energy is responsible for:
    1. Holding electrons in the shell
    2. Holding neutrons together
    3. Binding atoms in molecules
    4. Binding protons and neutrons in the nucleus
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  19. Question 19

    The Geiger-Müller counter cannot detect which type of radiation efficiently?
    1. Alpha
    2. Beta
    3. Gamma
    4. X-rays
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  20. Question 20

    Which nuclear reaction is responsible for the energy production in hydrogen bombs?
    1. Fission of plutonium
    2. Fission of uranium
    3. Fusion of hydrogen isotopes
    4. Fission followed by chain reaction
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