Question 1

Indicate whether each of the following is characteristic of the fission or fusion process.
-This process produces radioactive by-products.

Accepted Answer

A) both fission and fusion 
B) fusion 
C) fission 
A) both fission and fusion 
B) fusion 
C) fission C

Question 2

A patient receives 10 mrads of gamma radiation. If the factor that adjusts for biological damage for for gamma radiation is 1, how many mrems did the patient receive?

Accepted Answer

A)  2 mrem 
B)  5 mrem 
C)  10 mrem 
D)  20 mrem 
E)  200 mrem 
A)  2 mrem 
B)  5 mrem 
C)  10 mrem 
D)  20 mrem 
E)  200 mrem C

Question 3

A sample of cerium-141 for a diagnostic test was dissolved in saline solution to an activity of 4.5 millicuries/mL. If the patient undergoing the test needs a dose of 10. millicuries, how much of the solution should be injected into the patient?

Accepted Answer

A)  45 mL 
B)  45 mL. 
C)  2.2 mL 
D)  22 mL 
E)  4.5 mL 
A)  45 mL 
B)  45 mL. 
C)  2.2 mL 
D)  22 mL 
E)  4.5 mL C

Question 4

When an alpha particle is emitted from the nucleus of an atom, the nuclear mass

Accepted Answer

A)  increases by two units. 
B)  decreases by four units. 
C)  increases by one unit. 
D)  decreases by two units. 
E)  remains the same. 
A)  increases by two units. 
B)  decreases by four units. 
C)  increases by one unit. 
D)  decreases by two units. 
E)  remains the same.

Question 5

Which of the following types of radiation has the highest energy?

Accepted Answer

A)  α-particles 
B)  β-particles 
C)  γ-rays 
D)  visible light 
E)  All of these have the same energy. 
A)  α-particles 
B)  β-particles 
C)  γ-rays 
D)  visible light 
E)  All of these have the same energy.

Question 6

An imaging technique in which a computer monitors the degree of absorption of X-ray beams is known as

Accepted Answer

A)  positron emission tomography (PET). 
B)  magnetic resonance imaging (MRI). 
C)  computerized tomography (CT). 
D)  radioactive iodine uptake (RAIU). 
E)  a scan. 
A)  positron emission tomography (PET). 
B)  magnetic resonance imaging (MRI). 
C)  computerized tomography (CT). 
D)  radioactive iodine uptake (RAIU). 
E)  a scan.

Question 7

What is missing in the nuclear reaction shown below? 
66
30 Zn + 
1 
1
 p ? _____

Accepted Answer

A)  a proton 
B)  67
31 Ga 
C)  66
31 Ga 
D)  67
31 Zn 
E)  65
29 Cu 
A)  a proton 
B)  67
31 Ga 
C)  66
31 Ga 
D)  67
31 Zn 
E)  65
29 Cu

Question 8

Indicate whether each of the following is characteristic of the fission or fusion process.
-Very high temperatures must be achieved to initiate the reaction.

Accepted Answer

A) both fission and fusion 
B) fusion 
C) fission 
A) both fission and fusion 
B) fusion 
C) fission

Question 9

Which of the following is suitable as a minimum shielding for beta particles?

Accepted Answer

A)  air 
B)  1 m of water 
C)  gloves 
D)  1 m of concrete 
E)  1 cm of lead 
A)  air 
B)  1 m of water 
C)  gloves 
D)  1 m of concrete 
E)  1 cm of lead

Question 10

Iodine-123, which is used for diagnostic imaging in the thyroid, has a half-life of 13 hours. If 50.0 mg of I-123 were prepared at 8:00 a.m. on Monday, how many mg remain at 10:00 a.m. on the following day?

Accepted Answer

A)  50.0 mg 
B)  25.0 mg 
C)  12.5 mg 
D)  6.25 mg 
E)  3.13 mg 
A)  50.0 mg 
B)  25.0 mg 
C)  12.5 mg 
D)  6.25 mg 
E)  3.13 mg

Question 11

Nuclear fission as used in nuclear power plants produces radioactive waste with long half-lives.

Accepted Answer

A) True 
 B)False

Question 12

One mCi of a radioactive substance emits more radiation than one μCi of the same substance.

Accepted Answer

A) True 
 B)False

Question 13

The time needed for a radioactive sample to decay to one-half of its original activity is called the __________.

Accepted Answer

The answer of The time needed for a radioactive sample...

Question 14

One symptom of mild radiation sickness is

Accepted Answer

A)  a lowered white cell count. 
B)  a raised white cell count. 
C)  a lowered red blood cell count. 
D)  a raised red blood cell count. 
E)  a white cell count of zero. 
A)  a lowered white cell count. 
B)  a raised white cell count. 
C)  a lowered red blood cell count. 
D)  a raised red blood cell count. 
E)  a white cell count of zero.

Question 15

Medical radioisotopes used for diagnostic purposes typically have short half-lives.

Accepted Answer

A) True 
 B)False

Question 16

When aluminum-27 is bombarded with a neutron, a gamma ray is emitted. What radioactive isotope is produced?

Accepted Answer

A)  silicon-27 
B)  silicon-28 
C)  aluminum-28 
D)  magnesium-27 
E)  magnesium-28 
A)  silicon-27 
B)  silicon-28 
C)  aluminum-28 
D)  magnesium-27 
E)  magnesium-28

Question 17

An alpha particle is emitted when Am-241 decays to Np-237.

Accepted Answer

A) True 
 B)False

Question 18

Why is it important that radioisotopes used in diagnostic tests have short half-lives?

Accepted Answer

A)  These radioisotopes have a greater activity so they are easier to monitor. 
B)  This minimizes the harmful side effects of the radiation. 
C)  This is necessary so the radioisotopes will have high energy. 
D)  These radioisotopes are less expensive. 
E)  These radioisotopes are more abundant in nature. 
A)  These radioisotopes have a greater activity so they are easier to monitor. 
B)  This minimizes the harmful side effects of the radiation. 
C)  This is necessary so the radioisotopes will have high energy. 
D)  These radioisotopes are less expensive. 
E)  These radioisotopes are more abundant in nature.

Question 19

Sodium-24 has a half-life of 15 hours. How many hours is three half-lives?

Accepted Answer

A)  60 hours 
B)  45 hours 
C)  30 hours 
D)  15 hours 
E)  7.5 hours 
A)  60 hours 
B)  45 hours 
C)  30 hours 
D)  15 hours 
E)  7.5 hours

Question 20

The symbol 0
+1 e is a symbol used for a(n)

Accepted Answer

A)  proton. 
B)  positron. 
C)  gamma ray. 
D)  beta particle. 
E)  alpha particle. 
A)  proton. 
B)  positron. 
C)  gamma ray. 
D)  beta particle. 
E)  alpha particle.

Exam 4: Nuclear Chemistry

Indicate whether each of the following is characteristic of the fission or fusion process. -This process produces radioactive by-products.

A patient receives 10 mrads of gamma radiation. If the factor that adjusts for biological damage for for gamma radiation is 1, how many mrems did the patient receive?

A sample of cerium-141 for a diagnostic test was dissolved in saline solution to an activity of 4.5 millicuries/mL. If the patient undergoing the test needs a dose of 10. millicuries, how much of the solution should be injected into the patient?

When an alpha particle is emitted from the nucleus of an atom, the nuclear mass

Which of the following types of radiation has the highest energy?

An imaging technique in which a computer monitors the degree of absorption of X-ray beams is known as

What is missing in the nuclear reaction shown below? 66 30 Zn + 1 1 p ? _____

Indicate whether each of the following is characteristic of the fission or fusion process. -Very high temperatures must be achieved to initiate the reaction.

Which of the following is suitable as a minimum shielding for beta particles?

Iodine-123, which is used for diagnostic imaging in the thyroid, has a half-life of 13 hours. If 50.0 mg of I-123 were prepared at 8:00 a.m. on Monday, how many mg remain at 10:00 a.m. on the following day?

Nuclear fission as used in nuclear power plants produces radioactive waste with long half-lives.

One mCi of a radioactive substance emits more radiation than one μCi of the same substance.

The time needed for a radioactive sample to decay to one-half of its original activity is called the __________.

One symptom of mild radiation sickness is

Medical radioisotopes used for diagnostic purposes typically have short half-lives.

When aluminum-27 is bombarded with a neutron, a gamma ray is emitted. What radioactive isotope is produced?

An alpha particle is emitted when Am-241 decays to Np-237.

Why is it important that radioisotopes used in diagnostic tests have short half-lives?

Sodium-24 has a half-life of 15 hours. How many hours is three half-lives?

The symbol 0 +1 e is a symbol used for a(n)

Chemistry and Measurements

Energy and Matter

Atoms and Elements

Compounds and Their Bonds

Chemical Reactions and Quantities

Gases

Solutions

Reaction Rates and Chemical Equilibrium

Acids and Bases

Introduction to Organic Chemistry: Alkanes

Alkenes, Alkynes, and Aromatic Compounds

Alcohols, Phenols, Thiols, and Ethers

Aldehydes, Ketones, and Chiral Molecules

Carbohydrates

Carboxylic Acids and Esters

Lipids

Amines and Amides

Amino Acids and Proteins

Enzymes and Vitamins

Nucleic Acids and Protein Synthesis

Metabolic Pathways for Carbohydrates

Metabolism and Energy Production

Metabolic Pathways for Lipids and Amino Acids

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