Advanced Radon Measurement Service
Provider Course| Questions and 100%
Complete Solutions
Most naturally occurring radioactive materials and many fission products undergo
radioactive decay through a series of _____ (loss of particles or electromagnetic energy from
an unstable nucleus) rather than in a single step.
A. misinterpretations
B. reflections
C. transformations
D. growth spurts - ✔C. transformations
_____ are the source of cell damage in the lungs.
A. Radium elements
B. RDPs
C. Uranium material
D. Radon elements - ✔B. RDPs
T/F: Radon gas tastes like sulphur.
A. False
B. True - ✔A. False
T/F: If RDPs plate out on a wall, they are a hazard.
A. True
B. False - ✔B. False
If the radon concentration is 75 pCi/L, and the decay-product concentration is 0.3 WL,
the equilibrium ratio would be calculated as follows: ER = (0.3) x (100) ? 75 = _____.
,A. 30.75
B. 0.4
C. 4.0
D. 2.22 - ✔B. 0.4
T/F: The action-level limit of 0.02 WL corresponds to the derived radon concentration of 4
pCi/L when the equilibrium ratio is 50%.
A. False
B. True - ✔B. True
The average indoor radon level is _____ pCi/L.
A. 4.0
B. 100.3
C. 1.3
D. 2.22 - ✔C. 1.3
If a gallon container held air with 4 pCi/L, there would be about 4 (quarts per gallon)
multiplied by 4 (pCi/L) multiplied by 2.22 disintegrations per minutes, or about _____
disintegrations per minutes of radon atoms in the container.
A. 35.2
B. 8.88
C. 70.4
D. 4.0 - ✔A. 35.2
If there are 100 atoms of a radionuclide that has a half-life of one minute, there will be one-half
that number, or _____ atoms of the original radionuclide left one minute later.
A. 150
B. 25
, C. 200
D. 50 - ✔D. 50
T/F: If you have an amount of radon with a half-life of 3.8 days, by the end of 3.8 days, you will
have half as much.
A. True
B. False - ✔A. True
T/F: Radon is a worldwide health risk in homes.
A. False
B. True - ✔B. True
Radon is the _____ most important cause of lung cancer after smoking in many countries.
A. third
B. second
C. first-
D. least - ✔B. second
T/F: The World Health Organization (WHO) says radon causes up to 15% of lung
cancers worldwide.
A. False
B. True - ✔B. True
T/F: There exists a known threshold concentration below which radon exposure presents no
risk.
A. False
B. True - ✔A. False
Provider Course| Questions and 100%
Complete Solutions
Most naturally occurring radioactive materials and many fission products undergo
radioactive decay through a series of _____ (loss of particles or electromagnetic energy from
an unstable nucleus) rather than in a single step.
A. misinterpretations
B. reflections
C. transformations
D. growth spurts - ✔C. transformations
_____ are the source of cell damage in the lungs.
A. Radium elements
B. RDPs
C. Uranium material
D. Radon elements - ✔B. RDPs
T/F: Radon gas tastes like sulphur.
A. False
B. True - ✔A. False
T/F: If RDPs plate out on a wall, they are a hazard.
A. True
B. False - ✔B. False
If the radon concentration is 75 pCi/L, and the decay-product concentration is 0.3 WL,
the equilibrium ratio would be calculated as follows: ER = (0.3) x (100) ? 75 = _____.
,A. 30.75
B. 0.4
C. 4.0
D. 2.22 - ✔B. 0.4
T/F: The action-level limit of 0.02 WL corresponds to the derived radon concentration of 4
pCi/L when the equilibrium ratio is 50%.
A. False
B. True - ✔B. True
The average indoor radon level is _____ pCi/L.
A. 4.0
B. 100.3
C. 1.3
D. 2.22 - ✔C. 1.3
If a gallon container held air with 4 pCi/L, there would be about 4 (quarts per gallon)
multiplied by 4 (pCi/L) multiplied by 2.22 disintegrations per minutes, or about _____
disintegrations per minutes of radon atoms in the container.
A. 35.2
B. 8.88
C. 70.4
D. 4.0 - ✔A. 35.2
If there are 100 atoms of a radionuclide that has a half-life of one minute, there will be one-half
that number, or _____ atoms of the original radionuclide left one minute later.
A. 150
B. 25
, C. 200
D. 50 - ✔D. 50
T/F: If you have an amount of radon with a half-life of 3.8 days, by the end of 3.8 days, you will
have half as much.
A. True
B. False - ✔A. True
T/F: Radon is a worldwide health risk in homes.
A. False
B. True - ✔B. True
Radon is the _____ most important cause of lung cancer after smoking in many countries.
A. third
B. second
C. first-
D. least - ✔B. second
T/F: The World Health Organization (WHO) says radon causes up to 15% of lung
cancers worldwide.
A. False
B. True - ✔B. True
T/F: There exists a known threshold concentration below which radon exposure presents no
risk.
A. False
B. True - ✔A. False
