Chapter 31: Nuclear Energy; Effects and Uses of Radiation
Practice Questions



1.  

A neutron reacts with 147N. What element results if a proton is subsequently emitted?

Boron
Carbon
Oxygen
Nitrogen


2.  

What would be the Atomic Mass Number of the product nucleus in question 1?

12
13
14
15
16


3.  

What is the Q-value of the nuclear reaction in question 1?

.626 MeV
.843 MeV
1.137 MeV
2.00 MeV


4.  

The reaction in question 3 is

exothermic.
endothermic.
endoergic.


5.  

168O+p -> 42He+?

147N
137N
148O
146C


6.  

What is the Q-value of the reaction in question 5?

2.5 MeV
-.7 MeV
-2.5 MeV
-5.2 MeV


7.  

The reaction in question 6 is

exothermic.
exoergic.
endothermic.


8.  

42He+5626Fe ->21H+?

5826Fe
5627Co
5827Co
5625Mn


9.  

11H+21H -> gamma+?

32He
31H
21H
42He


10.  

What is the Q-value of the fusion reaction in question 9?

.42 MeV
5.49 MeV
12.86 MeV
17.59 MeV


11.  

32He+32He -> 11H+11H+?

32He
42He
31H
43Li


12.  

What is the Q-value of the fusion reaction in question 11?

.42 MeV
5.49 MeV
12.86 MeV
17.59 MeV


13.  

n+23592U -> n+n+14257La+?

9334Se
9135Br
9136Kr
9235Br


14.  

If the target nucleus in question 13 was 23994Pu instead of 23592U and eveything else was the same what would be the answer?

9537Rb
9637Rb
9038Sr
9638Sr


15.  

The fission reactions in question 13 and 14 can be initiated by a neutron with essentually zero energy, however a great deal of energy is required to initiate a fusion reaction such as the one in question 11. Calculate an initiation temperature for the fusion reaction in question 11?

1x109 K
5x109 K
6.6x109 K
13x109 K


16.  

Which of the following is not an example of ionizing radiation?

alpha
beta
gamma
X-ray
microwave


17.  

Which of the following is not an example of charged particle radiation?

alpha
beta
gamma


18.  

Which of the following is not a unit radiation dose or exposure?

rad
roentgen
curie
gray


19.  

At a certain location near a radioactive source 1x1012 ion pairs are produced in one gram of air during a period of time when the source was opened. If the dose was 0.625 R, what was the average ionization energy?

13.6 eV
34 eV
34 keV
0.51 MeV


20.  

If a lab worker is exposed to radiation such that 50 J of energy is released throughout his 100 kg body, what whole-body dose did he receive?

5 rads
15 rads
50 rads
500 rads
1500 rads


21.  

What is the dose for question 20 in gray?

50 gray
15 gray
5 gray
1.5 gray
0.5 gray


22.  

If the radiation in question 20 was gamma radiation, what effective dose did the lab worker receive?

15 rem
50 rem
150 rem
500 rem


23.  

If the radiation in question 20 is slow neutron radiation, what is the effective dose received by the lab worker?

15 rem
50 rem
150 rem
500 rem


24.  

A lab worker is positioned in such a way that her 50 kg body intercepts 1% of the 1 MeV gamma rays emitted by a 2 mCi source. If half of the gamma rays are stopped in her body, what was her dose rate in mrem/hr?

0.42 mrem/hr
4.6 mrem/hr
6.1 mrem/hr
100 mrem/hr


25.  

Assuming 50 weeks per year and a 5 day, 8 hour/day work week, what will be the yearly exposure of the worker in question 24?

440 mrem
620 mrem
840 mrem
1 rem


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