Question 1

What is the atomic number of the element produced when an element with atomic number Z emits a positron?

Accepted Answer

A)  Z __ 2 
B)  Z __ 1 
C)  Z + 1 
D)  Z + 2 
A)  Z __ 2 
B)  Z __ 1 
C)  Z + 1 
D)  Z + 2

Question 2

Which of the following types of radiation can pass completely through the body?

Accepted Answer

A)  α 
B)  β 
C)  γ 
D)  none of them 
A)  α 
B)  β 
C)  γ 
D)  none of them

Question 3

For high energy photons which of these tissues will have the lowest absorption?

Accepted Answer

A)  bone 
B)  muscle 
C)  water 
D)  None, they all have the same absorption. 
A)  bone 
B)  muscle 
C)  water 
D)  None, they all have the same absorption.

Question 4

Which of the following radioisotopes is used in PET scans?

Accepted Answer

A)  H-3 
B)  C-11 
C)  C-14 
D)  P-32 
A)  H-3 
B)  C-11 
C)  C-14 
D)  P-32

Question 5

What kinds of ions are produced by ionizing radiation?

Accepted Answer

A)  only positively charged ions 
B)  only negatively charged ions 
C)  both positively charged and negatively ions 
D)  The type of ions produced depend on the type of ionizing radiation. 
A)  only positively charged ions 
B)  only negatively charged ions 
C)  both positively charged and negatively ions 
D)  The type of ions produced depend on the type of ionizing radiation.

Question 6

Which of the following radioisotopes can be used to monitor thyroid function?

Accepted Answer

A)  C-14 
B)  H-3 
C)  I-131 
D)  P-32 
A)  C-14 
B)  H-3 
C)  I-131 
D)  P-32

Question 7

A radioactive isotope in a 9.0 mL vial has an intensity of 300. mCi. How much of the liquid should be injected into a patient to deliver a dose of 50. mCi?

Accepted Answer

A)  0.9 mL 
B)  1.5 mL 
C)  3.0 mL 
D)  4.5 m 
A)  0.9 mL 
B)  1.5 mL 
C)  3.0 mL 
D)  4.5 m

Question 8

Which of the following statements is true of nuclear fusion?

Accepted Answer

A)  The mass of the products is greater than the mass of the reactants, and energy is absorbed. 
B)  The mass of the products is greater than the mass of the reactants, and energy is released. 
C)  The mass of the products is less than the mass of the reactants, and energy is absorbed. 
D)  The mass of the products is less than the mass of the reactants, and energy is released. 
A)  The mass of the products is greater than the mass of the reactants, and energy is absorbed. 
B)  The mass of the products is greater than the mass of the reactants, and energy is released. 
C)  The mass of the products is less than the mass of the reactants, and energy is absorbed. 
D)  The mass of the products is less than the mass of the reactants, and energy is released.

Question 9

Which of the following forms of radiation is the most penetrating?

Accepted Answer

A)  α 
B)    
C)    
D)  positron 
A)  α 
B)    
C)    
D)  positron

Question 10

Which of the following equations correctly describes the relationship between mass and energy when mass, m, is converted to energy, E?

Accepted Answer

A)  E = mc 
B)  E = 2mc 
C)  E= 2 mc2 
D)  E= mc2 
A)  E = mc 
B)  E = 2mc 
C)  E= 2 mc2 
D)  E= mc2

Question 11

Which of the following affects the half-life of a radioactive sample?

Accepted Answer

A)  the age of sample 
B)  the size of the sample 
C)  the temperature of the sample 
D)  none of these 
A)  the age of sample 
B)  the size of the sample 
C)  the temperature of the sample 
D)  none of these

Question 12

If the intensity of radiation 1.0 m from a source is 300. mCi, what is the intensity 3.0 m from the source?

Accepted Answer

A) 100. mCi 
B)  33 mCi 
C)  9.0 × 102 mCi 
D)  2.7 Ci 
A) 100. mCi 
B)  33 mCi 
C)  9.0 × 102 mCi 
D)  2.7 Ci

Question 13

Exposure to 1.0 roentgen of which of the following types of radiation causes the formation of the most ions?

Accepted Answer

A)  α 
B)  β 
C)  γ 
D)  They all form the same number of ions. 
A)  α 
B)  β 
C)  γ 
D)  They all form the same number of ions.

Question 14

Which of the following is a measure of effect of radiation on biological material?

Accepted Answer

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

Question 15

Consider the following image.  
-Which of the following is characteristic of the reaction shown in the image?

Accepted Answer

A)  endothermic 
B)  controlled by neutron absorption 
C)  produces little or no waste 
D)  All of these characterize this reaction. 
A)  endothermic 
B)  controlled by neutron absorption 
C)  produces little or no waste 
D)  All of these characterize this reaction.

Question 16

Which of the following properties of radiation affect its penetrating power?

Accepted Answer

A)  energy 
B)  mass 
C)  both a and b 
D)  neither a nor b 
A)  energy 
B)  mass 
C)  both a and b 
D)  neither a nor b

Question 17

Radioactivity was first discovered in salts of which of the following elements?

Accepted Answer

A)  sodium 
B)  radium 
C)  radon 
D)  uranium 
A)  sodium 
B)  radium 
C)  radon 
D)  uranium

Question 18

Arsenic-74 is a positron emitter. What isotope is formed when 74As emits a positron?

Accepted Answer

A)  75Br 
B)  70Ga 
C)  74Ge 
D)  74Se 
A)  75Br 
B)  70Ga 
C)  74Ge 
D)  74Se

Question 19

Which of the following is most resistant to damage by exposure to radiation?

Accepted Answer

A)  bacteria 
B)  human tissue 
C)  viruses 
D)  They are all equally resistant to damage. 
A)  bacteria 
B)  human tissue 
C)  viruses 
D)  They are all equally resistant to damage.

Question 20

Which of the following is of particular importance in studying the effect of radiation on the body?

Accepted Answer

A)  energy 
B)  intensity 
C)  both a and b 
D)  neither a nor b 
A)  energy 
B)  intensity 
C)  both a and b 
D)  neither a nor b

Exam 9: Nuclear Chemistry

What is the atomic number of the element produced when an element with atomic number Z emits a positron?

Which of the following types of radiation can pass completely through the body?

For high energy photons which of these tissues will have the lowest absorption?

Which of the following radioisotopes is used in PET scans?

What kinds of ions are produced by ionizing radiation?

Which of the following radioisotopes can be used to monitor thyroid function?

A radioactive isotope in a 9.0 mL vial has an intensity of 300. mCi. How much of the liquid should be injected into a patient to deliver a dose of 50. mCi?

Which of the following statements is true of nuclear fusion?

Which of the following forms of radiation is the most penetrating?

Which of the following equations correctly describes the relationship between mass and energy when mass, m, is converted to energy, E?

Which of the following affects the half-life of a radioactive sample?

If the intensity of radiation 1.0 m from a source is 300. mCi, what is the intensity 3.0 m from the source?

Exposure to 1.0 roentgen of which of the following types of radiation causes the formation of the most ions?

Which of the following is a measure of effect of radiation on biological material?

Consider the following image. -Which of the following is characteristic of the reaction shown in the image?

Which of the following properties of radiation affect its penetrating power?

Radioactivity was first discovered in salts of which of the following elements?

Arsenic-74 is a positron emitter. What isotope is formed when 74As emits a positron?

Which of the following is most resistant to damage by exposure to radiation?

Which of the following is of particular importance in studying the effect of radiation on the body?

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Arsenic-74 is a positron emitter. What isotope is formed when ⁷⁴As emits a positron?