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General Science

MASS DEFECT MCQs

Total Questions : 20

Page 1 of 2 pages
Question 1. The Carbon-12 atom is used by physicists to establish
  1.    the charge on an electron.
  2.    the low point on a mass defect graph.
  3.    the gram and kilogram units.
  4.    the atomic mass unit.
 Discuss Question
Answer is Option D. -> the atomic mass unit.
Question 2. Choose the answer that correctly describes Iron
  1.    Iron has a heavier atom than carbon and a heavier proton also.
  2.    Iron has a heavier atom than gold but a lighter proton
  3.    Iron has a lighter atom than lead and a lighter proton also.
  4.    All three statements are equally correct.
 Discuss Question
Answer is Option C. -> Iron has a lighter atom than lead and a lighter proton also.
Question 3. Which is a definition of mass defect?
  1.    The difference between the mass of a nucleus and the mass of the atom
  2.    The difference between the mass of a nucleus and the mass of the neutrons in the nucleus
  3.    The difference between the mass of the nucleus and the mass of nucleons when separated
  4.    The difference between the mass of an nucleus and the mass of the protons in the nucleus
 Discuss Question
Answer is Option C. -> The difference between the mass of the nucleus and the mass of nucleons when separated
Question 4. Main sequence stars of all masses are fusing what element to make helium
  1.    hydrogen
  2.    iron
  3.    gold
  4.    beryllium
 Discuss Question
Answer is Option A. -> hydrogen
Question 5. The atomic mass of Hydrogen is
  1.    1.008
  2.    4.003
  3.    15.999
  4.    8.001
 Discuss Question
Answer is Option A. -> 1.008
Question 6. Which equation links mass and energy?
  1.    E=mc
  2.    E=m2c
  3.    E=mc2
  4.    E=m2c2
 Discuss Question
Answer is Option C. -> E=mc2
Question 7. The atomic mass of Helium is
  1.    1.008
  2.    4.003
  3.    15.999
  4.    9.001
 Discuss Question
Answer is Option B. -> 4.003
Question 8. What happens to the extra
  1.    nothing it just stays in the star
  2.    released as energy
  3.    there is no left over matter
  4.    stars are dumb
 Discuss Question
Answer is Option B. -> released as energy
Question 9. Mass of electrons equals to ______
  1.    0
  2.    1
  3.    2
  4.    3
 Discuss Question
Answer is Option A. -> 0
Question 10. Mass of protons is _________ amu
  1.    1
  2.    2
  3.    0
  4.    All of above
 Discuss Question
Answer is Option A. -> 1
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