Question 1

One of the symbols for a beta particle is   
 .

Accepted Answer

A) True 
 B)False

Question 2

Free radicals are dangerous because

Accepted Answer

A)  they are found incorporated in any radioisotope,including those that can enter the body through the lungs as does radon 
B)  they can be taken into the body in the food eaten if that food has been grown in radioactive soil 
C)  they are substances that are missing some electrons and are extremely active chemically 
D)  All of these responses are correct. 
A)  they are found incorporated in any radioisotope,including those that can enter the body through the lungs as does radon 
B)  they can be taken into the body in the food eaten if that food has been grown in radioactive soil 
C)  they are substances that are missing some electrons and are extremely active chemically 
D)  All of these responses are correct.

Question 3

Which of the following would have the least penetrating power into matter?

Accepted Answer

A)  alpha particles 
B)  beta particles 
C)  gamma rays 
D)  neutrons 
A)  alpha particles 
B)  beta particles 
C)  gamma rays 
D)  neutrons

Question 4

What characteristic is important in using radioisotope dating for very old items,such as rocks suspected to be over 100,000,000 years old?

Accepted Answer

A)  The radioisotope cannot be soluble in water. 
B)  The radioisotope must give off light for easy measurement. 
C)  The radioisotope in question must decay to another radioisotope. 
D)  The radioisotope should have a very long half-life. 
A)  The radioisotope cannot be soluble in water. 
B)  The radioisotope must give off light for easy measurement. 
C)  The radioisotope in question must decay to another radioisotope. 
D)  The radioisotope should have a very long half-life.

Question 5

Uranium-235,under the proper circumstances,will undergo nuclear decay releasing 3 high speed neutrons in the process.

Accepted Answer

A)  The neutrons released slow down with time and are not functional. 
B)  The neutrons released can be used to cause fusion reactions. 
C)  The neutrons released can cause a chain reaction with other U-235 atoms. 
D)  The neutrons are recaptured by the nucleus to produce heavier atoms. 
A)  The neutrons released slow down with time and are not functional. 
B)  The neutrons released can be used to cause fusion reactions. 
C)  The neutrons released can cause a chain reaction with other U-235 atoms. 
D)  The neutrons are recaptured by the nucleus to produce heavier atoms.

Question 6

A common use of radioisotopes is to speed up chemical reactions.

Accepted Answer

A) True 
 B)False

Question 7

A patient undergoes external irradiation with Co-60 for treatment of cancer.Which of the following would you NOT expect to observe as a result of this type of treatment?

Accepted Answer

A)  diarrhea 
B)  hair loss 
C)  bone marrow destruction 
D)  altered blood chemistry 
A)  diarrhea 
B)  hair loss 
C)  bone marrow destruction 
D)  altered blood chemistry

Question 8

Ionizing radiation produced fee radicals in living tissue.

Accepted Answer

A) True 
 B)False

Question 9

Consider the figure below.Which form of emitted radiation would follow the path shown by the arrow labeled 1?

Accepted Answer

A)  ($\alpha$) 
B)  ($\beta$-) 
C)  ($\gamma$) 
D)  ($\beta$-). 
A)  ($\alpha$) 
B)  ($\beta$-) 
C)  ($\gamma$) 
D)  ($\beta$-).

Question 10

The intensity of a radiation source was measured by a Geiger-Müller counter to be 236 counts per minute when the counter was place 124 ft from the source.What will be the intensity when the counter is 248 ft from the source?

Accepted Answer

A)  59.0 counts per minute 
B)  236 counts per minute 
C)  118 counts per minute 
D)  472 counts per minute 
A)  59.0 counts per minute 
B)  236 counts per minute 
C)  118 counts per minute 
D)  472 counts per minute

Question 11

Which of the following radioisotopes is not used as a diagnostic tracer?

Accepted Answer

A)  I-131 
B)  Mg-24 
C)  Kr-81 
D)  Fe-59 
A)  I-131 
B)  Mg-24 
C)  Kr-81 
D)  Fe-59

Question 12

Which of the following is not a nuclear reaction?

Accepted Answer

A)  fusion 
B)  radioactive decay 
C)  fission 
D)  redox 
A)  fusion 
B)  radioactive decay 
C)  fission 
D)  redox

Question 13

The term "nuclear energy" is most closely associated with which one of the following processes?

Accepted Answer

A)  nuclear fusion 
B)  nuclear fission 
C)  cyclotron bombardment 
D)  radioactive decay 
A)  nuclear fusion 
B)  nuclear fission 
C)  cyclotron bombardment 
D)  radioactive decay

Question 14

How much of a fissionable material is required to have a self-sustaining reaction?

Accepted Answer

A)  A mass of the fissionable element that is three times its atomic weight is required. 
B)  A mass of the fissionable element that is greater than the mass of the control rods. 
C)  A supercritical mass of fissionable material is required and causes branching. 
D)  A critical mass of fissionable material is required and varies depending on the identity of the fissionable material. 
A)  A mass of the fissionable element that is three times its atomic weight is required. 
B)  A mass of the fissionable element that is greater than the mass of the control rods. 
C)  A supercritical mass of fissionable material is required and causes branching. 
D)  A critical mass of fissionable material is required and varies depending on the identity of the fissionable material.

Question 15

Film badges will detect only X-rays.

Accepted Answer

A) True 
 B)False

Question 16

What is the nature of the reactions that occur in a star?

Accepted Answer

A)  They are extremely fast chemical reactions 
B)  They are fission reactions 
C)  They are a mixture of chemical & nuclear reactions 
D)  They are fusion reactions 
A)  They are extremely fast chemical reactions 
B)  They are fission reactions 
C)  They are a mixture of chemical & nuclear reactions 
D)  They are fusion reactions

Question 17

There are some elements within the periodic table that do not occur in nature.One of the man-made elements is _____ .

Accepted Answer

A)  Ta 
B)  Pt 
C)  Tc 
D)  La 
A)  Ta 
B)  Pt 
C)  Tc 
D)  La

Question 18

Nuclear emissions are passed through a tunnel that has a positive plate on the top and a negative plate on the bottom.Which of the following emissions is deflected the greatest by the electrical field?

Accepted Answer

A)  ($\alpha$ particles) 
B)  ($\beta$ particles) 
C)  neutrons 
D)  ($\gamma$ rays) 
A)  ($\alpha$ particles) 
B)  ($\beta$ particles) 
C)  neutrons 
D)  ($\gamma$ rays)

Question 19

The curie,becquerel and roentgen are all physical units of radiation.

Accepted Answer

A) True 
 B)False

Question 20

Carbon-14 is only effective in dating an object up to approximately 10 half-lives.The reason is that the speed with which C-14 decays increases after 10 half-lives.

Accepted Answer

A) True 
 B)False

Exam 10: Radioactivity and Nuclear Processes

One of the symbols for a beta particle is .

Free radicals are dangerous because

Which of the following would have the least penetrating power into matter?

What characteristic is important in using radioisotope dating for very old items,such as rocks suspected to be over 100,000,000 years old?

Uranium-235,under the proper circumstances,will undergo nuclear decay releasing 3 high speed neutrons in the process.

A common use of radioisotopes is to speed up chemical reactions.

A patient undergoes external irradiation with Co-60 for treatment of cancer.Which of the following would you NOT expect to observe as a result of this type of treatment?

Ionizing radiation produced fee radicals in living tissue.

Consider the figure below.Which form of emitted radiation would follow the path shown by the arrow labeled 1?

The intensity of a radiation source was measured by a Geiger-Müller counter to be 236 counts per minute when the counter was place 124 ft from the source.What will be the intensity when the counter is 248 ft from the source?

Which of the following radioisotopes is not used as a diagnostic tracer?

Which of the following is not a nuclear reaction?

The term "nuclear energy" is most closely associated with which one of the following processes?

How much of a fissionable material is required to have a self-sustaining reaction?

Film badges will detect only X-rays.

What is the nature of the reactions that occur in a star?

There are some elements within the periodic table that do not occur in nature.One of the man-made elements is _____ .

Nuclear emissions are passed through a tunnel that has a positive plate on the top and a negative plate on the bottom.Which of the following emissions is deflected the greatest by the electrical field?

The curie,becquerel and roentgen are all physical units of radiation.

Carbon-14 is only effective in dating an object up to approximately 10 half-lives.The reason is that the speed with which C-14 decays increases after 10 half-lives.

Matter, measurements, and Calculations

Atoms and Molecules

Electronic Structure and the Periodic Law

Forces Between Particles

Chemical Reactions

The States of Matter

Solutions and Colloids

Reaction Rates and Equilibrium

Acids,bases,and Salts

Organic Compounds: Alkanes

Unsaturated Hydrocarbons

Alcohols, phenols, and Ethers

Aldehydes and Ketones

Carboxylic Acids and Esters

Amines and Amides

Carbohydrates

Lipids

Proteins

Enzymes

Nucleic Acids and Protein Synthesis

Nutrition and Energy for Life

Carbohydrate Metabolism

Lipid and Amino Acid Metabolism

Body Fluids

Filters