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NUCLEAR CHEMISTRY MCQs

Total Questions : 24 | Page 2 of 3 pages
Question 11. Detects radiation by counting electric pulses carried by gas atoms ionized by radiation
  1.    Geiger-Muller counter
  2.    Scintillation counter
  3.    Film badge
  4.    Radioactive detective
 Discuss Question
Answer: Option A. -> Geiger-Muller counter
Question 12. An isotope that has an unstable nucleus is called a(n):
  1.    radioisotope
  2.    radioactivity
  3.    Both A & B
  4.    None of these
 Discuss Question
Answer: Option A. -> radioisotope
Question 13. In a nuclear reactor what absorbs fast moving neutrons?
  1.    generator
  2.    moderator
  3.    control rods
  4.    sheilding
 Discuss Question
Answer: Option C. -> control rods
Question 14. In a nuclear reactor what slows down neutrons?
  1.    Control Rods
  2.    Moderator
  3.    Sheilding
  4.    The brakes
 Discuss Question
Answer: Option B. -> Moderator
Question 15. Particle of charge +1 and mass equal to that of an electron
  1.    positron
  2.    radioactivity
  3.    alpha particle
  4.    gamma radiation
 Discuss Question
Answer: Option A. -> positron
Question 16. High-energy photons emitted by a radioisotope
  1.    positron
  2.    radioactivity
  3.    alpha particle
  4.    gamma radiation
 Discuss Question
Answer: Option D. -> gamma radiation
Question 17. Spontaneous emission from the nucleus of an atom
  1.    positron
  2.    radioactivity
  3.    alpha particle
  4.    gamma radiation
 Discuss Question
Answer: Option B. -> radioactivity
Question 18. Emitted helium nucleus
  1.    positron
  2.    radioactivity
  3.    alpha particle
  4.    gamma radiation
 Discuss Question
Answer: Option C. -> alpha particle
Question 19. Energetic electron from decomposed neutron
  1.    radioactivity
  2.    alpha particle
  3.    gamma radiation
  4.    beta particle
 Discuss Question
Answer: Option D. -> beta particle
Question 20. What is NOT a characteristic of an alpha particle?
  1.    A negatively charged electron
  2.    Stopped by paper
  3.    A positively charged particle
  4.    Low penetration
 Discuss Question
Answer: Option A. -> A negatively charged electron

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