CNMT EXAM QUESTION BANK |ACTUAL
QUESTIONS AND VERIFIED ANSWERS|BRAND NEW
2026-2027 UPDATE|GRADED A+
Question 1
1. If one is receiving 20 mR/hr exposure at a distance of 3 m from a source, at what
distance would one received 500 mR/hr exposure?
a. 0.36 cm
b. 0.36 m
c. 60 cm
d. 0.60 cm
CORRECT ANSWER
c. 60 cm
Question 2
2. If an area survey reveals an ambient radiation level of 7 mR/hr, which of the following
radioactive signs would be the best choice to display on the door leading to this area?
a. caution: radioactive materials
b. caution: radiation area
c. caution: high radiation area
d. grave danger: very high radiation area
CORRECT ANSWER
b. caution: radiation area
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,Question 3
3. An ionization chamber if left in integral mode for 10 min and records a total dose of 3
mR. Which of the following area posting signs should be used on the door leading to this
area?
a. caution: radioactive materials
b. caution: radiation area
c. caution: high radiation area
d. grave danger: very high radiation area
CORRECT ANSWER
b. caution: radiation area
Question 4
4. Which of the following area posting signs would not normally be found in a hospital?
a. caution: radioactive materials
b. caution: radiation area
c. caution: high radiation area
d. grave danger: very high radiation area
CORRECT ANSWER
d. grave danger: very high radiation area
Question 5
5. Which of the following type of survey instruments would be best to use to survey a spill
for removable contamination in a hot lab area where radioisotopes are being store?
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,a. GM detector
b. personal pocket dosimeter
c. dose calibrator with a wipe test
d. well counter with a wipe test
CORRECT ANSWER
d. well counter with a wipe test
Question 6
6. Four HVLs reduce the amount of incident radiation exposure to what?
a. 12.5%
b. 6.25%
c. 3.125%
d. none of the above
CORRECT ANSWER
b. 6.25%
Question 7
7. Which of the following is not required to be included in the records of a radioactive
package receipt check in process?
a. name of patient
b. name of radioisotope
c. amount of activity
d. both external and internal wipe checks
CORRECT ANSWER
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@THE STUDY VAULT
, a. name of patient
Question 8
8. A package is reading 2 mR/hr at distance of 2 m, what is the appropriate DOT label for
this package?
a. DOT 1
b. DOT 2
c. DOT 3
d. no labeling is required
CORRECT ANSWER
b. DOT 2
Question 9
9. The purpose of the transport index is:
a. to list the final destination of the package
b. to indicate the highest activity of the contents at 1 m from the source
c. not to give emergency personnel information about the contents of the package in an
accident
d. not to list the radioisotopes in the package
CORRECT ANSWER
b. to indicate the highest activity of the contents at 1 m from the source
Question 10
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@THE STUDY VAULT
QUESTIONS AND VERIFIED ANSWERS|BRAND NEW
2026-2027 UPDATE|GRADED A+
Question 1
1. If one is receiving 20 mR/hr exposure at a distance of 3 m from a source, at what
distance would one received 500 mR/hr exposure?
a. 0.36 cm
b. 0.36 m
c. 60 cm
d. 0.60 cm
CORRECT ANSWER
c. 60 cm
Question 2
2. If an area survey reveals an ambient radiation level of 7 mR/hr, which of the following
radioactive signs would be the best choice to display on the door leading to this area?
a. caution: radioactive materials
b. caution: radiation area
c. caution: high radiation area
d. grave danger: very high radiation area
CORRECT ANSWER
b. caution: radiation area
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@THE STUDY VAULT
,Question 3
3. An ionization chamber if left in integral mode for 10 min and records a total dose of 3
mR. Which of the following area posting signs should be used on the door leading to this
area?
a. caution: radioactive materials
b. caution: radiation area
c. caution: high radiation area
d. grave danger: very high radiation area
CORRECT ANSWER
b. caution: radiation area
Question 4
4. Which of the following area posting signs would not normally be found in a hospital?
a. caution: radioactive materials
b. caution: radiation area
c. caution: high radiation area
d. grave danger: very high radiation area
CORRECT ANSWER
d. grave danger: very high radiation area
Question 5
5. Which of the following type of survey instruments would be best to use to survey a spill
for removable contamination in a hot lab area where radioisotopes are being store?
2
@THE STUDY VAULT
,a. GM detector
b. personal pocket dosimeter
c. dose calibrator with a wipe test
d. well counter with a wipe test
CORRECT ANSWER
d. well counter with a wipe test
Question 6
6. Four HVLs reduce the amount of incident radiation exposure to what?
a. 12.5%
b. 6.25%
c. 3.125%
d. none of the above
CORRECT ANSWER
b. 6.25%
Question 7
7. Which of the following is not required to be included in the records of a radioactive
package receipt check in process?
a. name of patient
b. name of radioisotope
c. amount of activity
d. both external and internal wipe checks
CORRECT ANSWER
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@THE STUDY VAULT
, a. name of patient
Question 8
8. A package is reading 2 mR/hr at distance of 2 m, what is the appropriate DOT label for
this package?
a. DOT 1
b. DOT 2
c. DOT 3
d. no labeling is required
CORRECT ANSWER
b. DOT 2
Question 9
9. The purpose of the transport index is:
a. to list the final destination of the package
b. to indicate the highest activity of the contents at 1 m from the source
c. not to give emergency personnel information about the contents of the package in an
accident
d. not to list the radioisotopes in the package
CORRECT ANSWER
b. to indicate the highest activity of the contents at 1 m from the source
Question 10
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@THE STUDY VAULT
