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| 1 | |
A radioisotope decays to give an alpha particle and Th-234. What was the original element? |
| | A) | Pa |
| | B) | Bi |
| | C) | U |
| | D) | Ra |
| | E) | Rn |
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| 2 | |
When Pb-210 decays by emission of a b particle, what isotope is formed? |
| | A) | Bi-209 |
| | B) | Bi-210 |
| | C) | Pb-209 |
| | D) | Tl-210 |
| | E) | Tl-209 |
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| 3 | |
The nuclide copper-64 decays by emission of a positron. What is the product nuclide? |
| | A) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0073402699/37547/Image14.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]> |
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| | B) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0073402699/37547/Image15.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]> |
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| | C) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0073402699/37547/Image16.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]> |
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| | D) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0073402699/37547/Image17.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]> |
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| | E) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0073402699/37547/Image18.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (0.0K)</a>]]> |
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| 4 | |
Given that potassium-39 is a stable nuclide, what type of particle would you expect to be emitted when potassium-42 decays? |
| | A) | proton |
| | B) | neutron |
| | C) | beta particle |
| | D) | positron |
| | E) | alpha particle |
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| 5 | |
What fraction of radioactive atoms remains in a sample after three half-lives? |
| | A) | 1/4 |
| | B) | 1/5 |
| | C) | 1/6 |
| | D) | 1/8 |
| | E) | none of the above |
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| 6 | |
What is the specific activity (in Ci/g) of radioactive sample if 4.56 mg emits 2.27 ´ 108 b particles per second? |
| | A) | 4.97 Ci/g |
| | B) | 0.135 Ci/g |
| | C) | 1.35 Ci/g |
| | D) | 0.00133 Ci/g |
| | E) | none of the above |
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| 7 | |
Tritium (hydrogen-3) is a naturally-occurring isotope, present in water, and has a half-life of 12.3 years. A bottle of aged red wine has a tritium activity which is three-quarters as great as in newly-bottled wine. Estimate or calculate the age of the wine. |
| | A) | 16.4 years |
| | B) | 9.3 years |
| | C) | 8.9 years |
| | D) | 5.1 years |
| | E) | 3.1 years |
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| 8 | |
When atoms of aluminum-27 are bombarded with alpha particles, a neutron and an isotope of phosphorus are produced. What is the mass number of the isotope? |
| | A) | 28 |
| | B) | 29 |
| | C) | 30 |
| | D) | 31 |
| | E) | 32 |
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| 9 | |
Gamma-rays and X-rays interact with matter, causing |
| | A) | formation of ions, but no free radicals. |
| | B) | formation of free radicals, but no ions. |
| | C) | nuclear transmutation reactions. |
| | D) | formation of ions and free radicals. |
| | E) | formation of ions and nuclear transmutation reactions. |
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| 10 | |
For the average person, what is the source of the greatest amount of radiation per year? |
| | A) | radiation from the air, especially radon gas |
| | B) | medical and dental X-rays |
| | C) | cosmic rays |
| | D) | potassium-40 in the body |
| | E) | nuclear power plants and their spent fuel |
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| 11 | |
Considering the most stable isotope of each of the following elements, predict which one has the highest binding energy per nucleon. |
| | A) | hydrogen |
| | B) | beryllium |
| | C) | lithium |
| | D) | uranium |
| | E) | cobalt |
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| 12 | |
The atomic mass of manganese-55 is 54.938 amu. Use data from your textbook to determine the total binding energy of this nuclide, in J/atom. |
| | A) | 2.58 ´ 10-19 J |
| | B) | 4.65 ´ 1016 J |
| | C) | 1.33 ´ 10-19 J |
| | D) | 7.74 ´ 10-11 J |
| | E) | None of the above |
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| 13 | |
Which of the following cannot be an example of nuclear fusion? |
| | A) | A nuclear reaction in which two reactants have greater binding energy than their fused product. |
| | B) | A nuclear reaction in which a carbon nucleus is produced. |
| | C) | The primary energy-producing reaction in the Sun. |
| | D) | The primary energy-producing reaction in a hydrogen bomb. |
| | E) | A reaction in which the reactants are less stable than the products. |
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| 14 | |
A typical neutron-initiated fission of U-235 yields Mo-97, two neutrons, and another element. What is this second element? |
| | A) | In |
| | B) | Te |
| | C) | Sn |
| | D) | Sb |
| | E) | La |
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| 15 | |
Which of the following are present in a nuclear reactor in order to slow the rate of the chain reaction? |
| | A) | reflectors |
| | B) | control rods |
| | C) | moderators |
| | D) | heavy water |
| | E) | zirconium |
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