| 201. |
How many neutrons are in a neutral atom of iron-58? Answer
|
|
A. |
26 |
C. |
30 |
|
B. |
28 |
D. |
32 |
|
|
|
|
|
| 202. |
Uranium-238
Answer
|
|
A. |
is used as fuel in a
nuclear reactor because of its ability to undergo fission. |
|
B. |
totally ignores the
neutrons created by the fission of uranium-235 |
|
C. |
absorbs neutrons and
then decays to form plutonium-239 |
|
D. |
absorbs neutrons and
becomes a stable isotope |
|
|
|
|
|
| 203. |
californium-249
+ nitrogen-15 ---> 4n +
X What is
X? Answer
|
|
A. |
260Md |
C. |
260Db |
|
B. |
264Md |
D. |
264Db |
|
|
|
|
|
| 204. |
What is the correct
interpretation of Rutherford's gold foil experiment? Answer
|
|
A. |
The nucleus is
composed of protons and neutrons with electrons outside the nucleus. |
|
B. |
The electron has a
much smaller mass than the proton or neutron. |
|
C. |
Electrons orbit the
nucleus. |
|
D. |
Most of the mass of
the atom is in the nucleus. |
|
|
|
|
|
| 205. |
If the mass defect
per nucleon of X is larger than the mass defect per nucleon of Y, Answer
|
|
A. |
X has a larger
binding energy per nucleon than Y but is less stable. |
|
B. |
X has a larger
binding energy per nucleon than Y but is more stable. |
|
C. |
X has a smaller
binding energy per nucleon than Y but is less stable. |
|
D. |
X has a smaller
binding energy per nucleon than Y but is more stable. |
|
|
|
|
|
| 206. |
Energetic neutrons
are slowed down to thermal neutrons in a nuclear reactor by Answer
|
|
A. |
cyclotrons |
C. |
moderators |
|
B. |
control rods |
D. |
fuel rods |
|
|
|
|
|
| 207. |
Which isotope has
the same number of neutrons as calcium-42? Answer
|
|
A. |
calcium-40 |
C. |
scandium-42 |
|
B. |
potassium-41 |
D. |
argon-41 |
|
|
|
|
|
| 208. |
All atoms of two
isotopes Answer
|
|
A. |
have the same number of protons
and electrons. |
C. |
have the same number of protons
but different numbers of neutrons.
|
|
B. |
have the same number of neutrons
but different numbers of protons. |
D. |
have different numbers of
protons and neutrons. |
|
|
|
|
|
| 209. |
Which particle can
not be accelerated by a particle accelerator? Answer
|
|
A. |
electron |
C. |
positron |
|
B. |
proton |
D. |
neutron |
|
|
|
|
|
| 210. |
Which nuclear
process powers all main stage stars? Answer
|
|
A. |
radioactive decay |
C. |
fission |
|
B. |
fusion |
D. |
neutron absorption |
