Question 1

The reasons why I-131 is not suitable for use as a tracer are the same reasons why I-131 is an appropriate choice to treat thyroid cancer.

Accepted Answer

A) True 
 B)False

Question 2

​ Which of the following types of nuclear radiation consists of only positive electrons?

Accepted Answer

A) Alpha particles 
B) Beta particles 
C) beta particles 
D) Positrons 
A) Alpha particles 
B) Beta particles 
C) beta particles 
D) Positrons

Question 3

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 4

One reason that irradiated food is not readily available in most grocery stores is that

Accepted Answer

A) the cost of the irradiated foods is much higher than normally offered foods. 
B) the chance of purchasing food that is still radioactive is rather high. 
C) most people have not learned enough to know that they are safe. 
D) All of the responses are correct. 
A) the cost of the irradiated foods is much higher than normally offered foods. 
B) the chance of purchasing food that is still radioactive is rather high. 
C) most people have not learned enough to know that they are safe. 
D) All of the responses are correct.

Question 5

The elements beyond uranium, the trans-uranium elements, are all synthetic.

Accepted Answer

A) True 
 B)False

Question 6

The intensity of radiation is 100 units 15 feet from the source. The intensity would then be 300 units 5 feet from the source.

Accepted Answer

A) True 
 B)False

Question 7

Ionizing radiation produced fee radicals in living tissue.

Accepted Answer

A) True 
 B)False

Question 8

Which of the following is not attracted or repelled by electrical charges?

Accepted Answer

A) alpha rays 
B) beta rays 
C) gamma rays 
D) More than one response is correct. 
A) alpha rays 
B) beta rays 
C) gamma rays 
D) More than one response is correct.

Question 9

Consider the figure below.  Which form of emitted radiation would follow the path shown by the arrow labeled 2?

Accepted Answer

A) α 
B) β− 
C) γ 
D) β+ 
A) α 
B) β− 
C) γ 
D) β+

Question 10

Which measure of radiation is used to account for health differences of various types of radiation?

Accepted Answer

A) curie 
B) rem 
C) gray 
D) rad 
A) curie 
B) rem 
C) gray 
D) rad

Question 11

Consider the figure below.  Which form of emitted radiation would follow the path shown by the arrow labeled 3?

Accepted Answer

A) α 
B) β− 
C) γ 
D) n 
A) α 
B) β− 
C) γ 
D) n

Question 12

Sodium-24 has a half-life of 15.0 hours. Suppose you had a sample containing 0.010 moles of Na-24. How many hours would be required to reduce your sample to 6.25 × 10 − 4 moles?

Accepted Answer

A) 120 
B) 60 
C) 45 
D) 30 
A) 120 
B) 60 
C) 45 
D) 30

Question 13

What is one of the advantages of food that has been irradiated to kill bacteria?

Accepted Answer

A) Some irradiated foods do not require refrigeration if in air-tight packaging. 
B) Irradiation is a less expensive method of preservation than is canning. 
C) Irradiation has the effect of changing the color from dull colors to vibrant colors which makes the food much more pleasing. 
D) All of these responses are correct. 
A) Some irradiated foods do not require refrigeration if in air-tight packaging. 
B) Irradiation is a less expensive method of preservation than is canning. 
C) Irradiation has the effect of changing the color from dull colors to vibrant colors which makes the food much more pleasing. 
D) All of these responses are correct.

Question 14

​ Identify the mode of decay in an unstable nucleus in which an electron from outside the nucleus is drawn into the nucleus and the electron combines with a proton to form a neutron.

Accepted Answer

A) Alpha decay 
B) Electron capture 
C) Beta decay 
D) Positron emission 
A) Alpha decay 
B) Electron capture 
C) Beta decay 
D) Positron emission

Question 15

Tritium has a half-life of 12.5 years. If you had a sample of 8.00 grams of tritium today, how many grams of tritium would you have in 37.5 years?

Accepted Answer

A) 8.00 g 
B) 4.00 g 
C) 2.00 g 
D) 1.00 g 
A) 8.00 g 
B) 4.00 g 
C) 2.00 g 
D) 1.00 g

Question 16

Synthetic elements can be produced by

Accepted Answer

A) the application of extremely high voltages. 
B) by the bombardment of light with electrons. 
C) by the bombardment of an atom by high speed neutrons. 
D) All of the responses are correct. 
A) the application of extremely high voltages. 
B) by the bombardment of light with electrons. 
C) by the bombardment of an atom by high speed neutrons. 
D) All of the responses are correct.

Question 17

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 18

What is the emission that is used to obtain a CAT scan?

Accepted Answer

A) alpha 
B) beta 
C) X-ray 
D) none of these responses 
A) alpha 
B) beta 
C) X-ray 
D) none of these responses

Question 19

Which technique of medical investigation presents no ionizing radiation risk to the patient?

Accepted Answer

A) X-ray 
B) CAT scan 
C) MRI 
D) all of them 
A) X-ray 
B) CAT scan 
C) MRI 
D) all of them

Question 20

Which of the following types of radiation is composed of particles which carry a negative charge?

Accepted Answer

A) alpha 
B) beta 
C) gamma 
D) positron 
A) alpha 
B) beta 
C) gamma 
D) positron

Exam 10: Radioactivity and Nuclear Processes

The reasons why I-131 is not suitable for use as a tracer are the same reasons why I-131 is an appropriate choice to treat thyroid cancer.

​ Which of the following types of nuclear radiation consists of only positive electrons?

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

One reason that irradiated food is not readily available in most grocery stores is that

The elements beyond uranium, the trans-uranium elements, are all synthetic.

The intensity of radiation is 100 units 15 feet from the source. The intensity would then be 300 units 5 feet from the source.

Ionizing radiation produced fee radicals in living tissue.

Which of the following is not attracted or repelled by electrical charges?

Consider the figure below. Which form of emitted radiation would follow the path shown by the arrow labeled 2?

Which measure of radiation is used to account for health differences of various types of radiation?

Consider the figure below. Which form of emitted radiation would follow the path shown by the arrow labeled 3?

Sodium-24 has a half-life of 15.0 hours. Suppose you had a sample containing 0.010 moles of Na-24. How many hours would be required to reduce your sample to 6.25 × 10 − 4 moles?

What is one of the advantages of food that has been irradiated to kill bacteria?

​ Identify the mode of decay in an unstable nucleus in which an electron from outside the nucleus is drawn into the nucleus and the electron combines with a proton to form a neutron.

Tritium has a half-life of 12.5 years. If you had a sample of 8.00 grams of tritium today, how many grams of tritium would you have in 37.5 years?

Synthetic elements can be produced by

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

What is the emission that is used to obtain a CAT scan?

Which technique of medical investigation presents no ionizing radiation risk to the patient?

Which of the following types of radiation is composed of particles which carry a negative charge?

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

Which of the following types of nuclear radiation consists of only positive electrons?

Sodium-24 has a half-life of 15.0 hours. Suppose you had a sample containing 0.010 moles of Na-24. How many hours would be required to reduce your sample to 6.25 × 10^{− 4} moles?

Identify the mode of decay in an unstable nucleus in which an electron from outside the nucleus is drawn into the nucleus and the electron combines with a proton to form a neutron.