Atomic and Nuclear Physics Test 03

Total Questions: 17

1 - The fuel for nuclear fusion is:
A ) H ✅
B ) He
C ) U
D ) any radioactive material

2 - The fuel for nuclear fission is:
A ) H
B ) He
C ) U
D ) any radioactive material

3 - In the fission reaction, the number of neutrons produced:
A ) zero.
B ) 1.
C ) 2.
D ) 3 ✅

4 - The chief hazard of radiation is:
A ) Damage to living cells due to ionization. ✅
B ) Damage to cells due to heating.
C ) Damage to living cellls due to the correction of chemical impurities.
D ) The creation of new isotopes within the body.

5 - An X-ray technician takes an average of ten X- per day and receive 2.5 is mrem per X-ray. What is the total dose the technician receives in 250 working days?
A ) 2.50 rem
B ) 5.00 rem
C ) 6. 25 rem ✅
D ) 7.75 rem

6 - Which of the following particles has the smallest mass?
A ) Proton
B ) Electron ✅
C ) Neutron
D ) Nucleus

7 - Which of the following is correct for the number of neutrons in the nucleus?
A ) N= A-Z ✅
B ) N=Z -A
C ) N=Z +A
D ) N=Z

8 - How many electrons are the ¹² ⁶ Catom?
A ) 12
B ) 6 ✅
C ) 18
D ) 9

9 - How many nuscleons are the are in the²⁰ ¹⁰ Ne atom?
A ) 30
B ) 18
C ) 10
D ) 20 ✅

10 - How many neutrons are in the ²³ ¹¹ Na atom?
A ) 12 ✅
B ) 11
C ) 18
D ) 24

11 - How many protons are in the ¹⁴ ⁷ N atom?
A ) 14
B ) 6
C ) 7 ✅
D ) 10

12 - Which force is responsible for the radioactive decay of the nucleus?
A ) Gravitational force
B ) Weak Nuclear force ✅
C ) Strong Nuclear force
D ) Electromagnetic force
Explanation:
  1. Radioactivity was  discovered by Becquerel.
  2. Radioactivity emerges from: Nuclear energy.
  3. Radioactivity is measured by which device Geiger counter.
  4. Thorium metal is not only magnetic but also radioactive Radioactive element are Plutonium, Thorium, Uranium.
  5.  Alpha rays is a positively charged particle emitted by a radioactive element.
  6. A negatively charged particle emitted by a radioactive element during radioactive decay is called a Beta particle.
  7. Radioactive isotopes are used in medicine for both diagnostic imaging and treatment.
  8. A 100 g sample of a radioactive element has a half life of 5 days. 12.5grams of radioactive material will remain after 15 days.
  9. Radioactive elements have atomic number greater than82.
  10. Weak Nuclear Force is responsible for the radioactive decay of the nucleus.
  11. The radioactive material must be placed in a box of Lead.
  12. Radioactive cobalt 60 is used for curing: Cancerous cells.
  13. Radioactive isotope present in atmosphere is: carbon -14.
  14. Unstable nuclei  are radioactive.When radioactivity rays are passed through air or any gas, they cause it to Ionize.

13 - An isotope with a high Bonding Energy per nucleon:
A ) will decay in a short period of time
B ) is very unstable.
C ) is very stable. ✅
D ) has very few electrons.

14 - Which of the following about the gamma ray is true?
A ) It carries are negative charge.
B ) it can be deflected by a magnetic field.
C ) It can be deflected by an electric field.
D ) It has zero rest mass and netural charge. ✅

15 - A 100 g sample of a radioactive element has a half life of 5 days. How many grams of radioactive material will remain after 15 days?
A ) 100 g
B ) 50 g
C ) 25 g
D ) 12.5 g ✅
Explanation:
  1. Radioactivity was  discovered by Becquerel.
  2. Radioactivity emerges from: Nuclear energy.
  3. Radioactivity is measured by which device Geiger counter.
  4. Thorium metal is not only magnetic but also radioactive Radioactive element are Plutonium, Thorium, Uranium.
  5.  Alpha rays is a positively charged particle emitted by a radioactive element.
  6. A negatively charged particle emitted by a radioactive element during radioactive decay is called a Beta particle.
  7. Radioactive isotopes are used in medicine for both diagnostic imaging and treatment.
  8. A 100 g sample of a radioactive element has a half life of 5 days. 12.5grams of radioactive material will remain after 15 days.
  9. Radioactive elements have atomic number greater than82.
  10. Weak Nuclear Force is responsible for the radioactive decay of the nucleus.
  11. The radioactive material must be placed in a box of Lead.
  12. Radioactive cobalt 60 is used for curing: Cancerous cells.
  13. Radioactive isotope present in atmosphere is: carbon -14.
  14. Unstable nuclei  are radioactive.When radioactivity rays are passed through air or any gas, they cause it to Ionize.

16 - A reaction that releases more energy than is put into it is called:
A ) endothermic
B ) exothermic ✅
C ) nuclear
D ) chemical equilibrium

17 - Charge on alpha particle is.
A ) 2e ✅
B ) 3e
C ) 4e
D ) 5e
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