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NUCLEAR CHEMISTRY MCQs

Total Questions : 24 | Page 3 of 3 pages
Question 21. What is the equation for the positron emission by oxygen-16?
  1.    168O + 0+1e --> 169F
  2.    168O --> 42He + 126C
  3.    168O --> 0-1e + 169F
  4.    168O --> 0+1e + 167N
 Discuss Question
Answer: Option D. -> 168O --> 0+1e + 167N
Question 22. What is the half-life of an isotope if after 20
  1.    1.25 days
  2.    5.0 days
  3.    0.000305 days
  4.    4.25 days
 Discuss Question
Answer: Option B. -> 5.0 days
Question 23. Which type of radiation has the greatest penetrating power?
  1.    Alpha
  2.    Beta
  3.    Gamma 
  4.    Microwaves
 Discuss Question
Answer: Option C. -> Gamma 
Question 24. Carbon-12 has 98
  1.    Carbon-12
  2.    Carbon-13
  3.    Carbon-14
  4.    They all contribute equally
 Discuss Question
Answer: Option A. -> Carbon-12

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