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General Science

NUCLEAR CHEMISTRY MCQs

Total Questions : 24

Page 1 of 3 pages
Question 1. What kind of a nuclear reaction changes the number of protons in the nucleus?
  1.    transmutation
  2.    radioactive decay
  3.    fusion and fission
  4.    All of them listed in the other answer choices
 Discuss Question
Answer is Option D. -> All of them listed in the other answer choices
Question 2. Which produces more energy--nuclear fission or nuclear fusion?
  1.    Fusion
  2.    Fission
  3.    They produce the same amount
  4.    It depends on the elements used
 Discuss Question
Answer is Option A. -> Fusion
Question 3. Arrange in order of increasing ability to penetrate matter
  1.    Beta, gamma, alpha
  2.    Alpha, gamma, beta
  3.    Gamma, beta, alpha
  4.    Alpha, beta, gamma
 Discuss Question
Answer is Option D. -> Alpha, beta, gamma
Question 4. What is the missing isotope that will balance the following nuclear equation?94Be + 11H → _____ + 42He
  1.    105B
  2.    105Ne
  3.    63Li
  4.    63C
 Discuss Question
Answer is Option C. -> 63Li
Question 5. The force that holds the protons and neutrons together in the nucleus of an atom is called __________
  1.    Binding force
  2.    magnetic force
  3.    centripetal force
  4.    electrostatic force
 Discuss Question
Answer is Option A. -> Binding force
Question 6. The half-life of a radioactive isotope is 20
  1.    0.500g
  2.    0.333g
  3.    0.250g
  4.    0.125g
 Discuss Question
Answer is Option D. -> 0.125g
Question 7. What does it mean when an element is radioactive?
  1.    atom emits radiation
  2.    nucei unstable due to uneven p to n ratio
  3.    nuclei changes to become stable
  4.    all of the above
 Discuss Question
Answer is Option D. -> all of the above
Question 8. If Thorium-234 undergoes a beta decay, What element will be left in its place?
  1.    Actinium-234
  2.    Thorium-233
  3.    Protactinium-234
  4.    Radium-230
 Discuss Question
Answer is Option C. -> Protactinium-234
Question 9. Which of the following is a fusion reaction?
  1.    hydrogen-2 and hydrogen-3 combining to form a helium-4 atom and a neutron
  2.    Carbon-14 emitting an alpha particle
  3.    uranium-235 absorbing a neutron and breaking into barium-141, krypton-92, and three neutrons
  4.    uranium-238 emitting a beta particle
 Discuss Question
Answer is Option A. -> hydrogen-2 and hydrogen-3 combining to form a helium-4 atom and a neutron
Question 10. In fission neutron is often used to start the reaction and it is also a product of the reaction
  1.    neutron emission
  2.    nuclear fusion
  3.    domino effect
  4.    chain reaction
 Discuss Question
Answer is Option D. -> chain reaction
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