1. When lead-207 (Z = 82) is bombarded with neutrons, it can
change into
a. lead-208
b. lead-206
c. tellurium-208 (Z
= 81)
d. bismuth-208 (Z =
83)
2. Complete the following nuclear reaction:
16O + 4He -> _____ + 19Ne
8
2 10
a. 1p
b. 1n
c. 2H
d. 3H
3. When a target nucleus is bombarded by an appropriate beam of particles, it is
possible to produce
a. a less massive
nucleus, but not a more massive one.
b. a more massive
nucleus, but not a less massive one.
c. a nucleus with smaller atomic number, but not one with a greater
atomic number.
d. a nucleus with greater atomic number, but not one with a smaller
atomic number.
e. a nucleus with
either greater or smaller atomic number.
4. What is the Q-value of the folllowing reaction?
14N +
4He = 1p + 17O
(14.003074) (4.002603)
(1.007825) (16.999131)
a. 1.191 MeV
b. -1.191 MeV
c. 1.279X10-3
MeV
d. -1.279X10-3
MeV
5. What is the energy released (positive) or absorbed (negative) in the following
reaction?
3H +
3H = 4He +
2(1n)
(3.016049) (3.016049)
(4.002603) (1.008665)
a. 0.0122 MeV
b. -0.0122 MeV
c. 11.3 MeV
d. -11.3 MeV
6. What is the mass of the products of a nuclear fission reaction compared to the
mass of the original products?
a. greater
b. less
c. the same
d. varies according
to the reaction
7. What is the mass of the products of a nuclear fusion reaction compared to the
original elements?
a. greater
b. less
c. the same
d. varies according
to the reaction
8. The fuel for nuclear fusion in the center of the Sun is
a. H
b. He
c. U
d. any radioactive
material
9. The fuel for nuclear fission is
a. H
b. He
c. U
d. any radioactive
material
10. In the fission reaction 235U + 1n -> 141Ba + 92Kr + neutrons, the number of
neutrons produced is
a. zero.
Note: The atomic numbers of
b. 1.
U, Ba, and Kr are
c. 2.
92, 56, and 36,
d. 3.
respectively.
11. What is the meaning of the term "critical mass"?
a. This refers to the mass of the "critical" elements in a reactor, i.e., the
uranium or plutonium.
b. This refers to the minimum amount of fissionable material required to
sustain a chain reaction.
c. This is the amount of mass needed to make a power reactor economically
feasible.
d. This is the
material which is just on the verge of becoming radioactive.
12. All of the following are units used to describe radiation dosage
in humans except
a. curie.
b. rad.
c. rem.
d. RBE.
e. sievert.
13. A unit that measures the effective dose of radiation in a human
is the
a. curie.
b. RBE.
c. rad.
d. rem.
14. 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
cells due to the creation of chemical impurities.
d. the creation of
new isotopes within the body.
15. An X-ray technician takes an avearge of ten X-rays per day and receives 2.5 mrad
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
Answers:
1. a
2. b
3. e
4. b
5. c
6. b
7. b
8. a
9. c
10. d
11. b
12. a
13. d
14. a
15. c