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RADON PRACTICE EXAM QUESTIONS AND ANSWERS
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RADON PRACTICE EXAM QUESTIONS AND ANSWERS
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RADON PRACTICE EXAM QUESTIONS AND ANSWERSIf you own multiple continuous Radon monitors, at what frequency should a source
check take place? - Answers -6 months
Radon gas will pass through most filters. - Answers -True
The basic parts of an atom are: - Answers -neutron, proton, electron
What passive device is most adversely affected by humidity? - Answers -Open Faced
Charcoal
The EPA says that most homes can be reduced to 2.0 pCi/l or less. - Answers -True
Detectors should be placed
1. ___________ inch/inches from the floor
2. ___________ foot/feet from an exterior wall
3.____________ foot/feet from the ceiling
4.____________ foot/feet from an exterior opening
5. No more than ____________ foot/feet off the floor - Answers -20
1
1
3
8
According to national measurement protocols, enclosed bathrooms, kitchens, and
garages are acceptable places to test in a pinch. - Answers -False
What is the average annual Radon concentration in homes in the U.S., according to the
EPA? - Answers -1.3
What is a Curie? - Answers -Radioactive decays from one gram of Radium
A crawlspace would most likely see a reduction in radon levels above from which type
of mitigation technique? - Answers -sub membrane depressurization
With what frequency should users of passive time integrating detectors conduct blank
measurements? - Answers -5 per 100, or 25 each month, whichever is smaller
If exposed to 4 pCi/l over an average lifetime, how many people out of 1,000 who never
smoked would be expected to get lung cancer, according to the EPA? - Answers -7
Charcoal technology devices are true integrators. - Answers -False
, Which of the following describes and documents the routine actions required to produce
results which are valid, scientifically defensible, and of known precision and accuracy? -
Answers -quality assurance
What research methods gave us the best health effects and outcome data on Radon
exposure? - Answers -Residential Case Control and Miner Studies
According to the Home Buyer's and Sellers Guide, if the average of two short term tests
is 6.0 pCi/l, what percentage of a year round test would be likely to be lower than 6.0
pCi/l? - Answers -50%
National measurement protocols of closed building conditions include the requirement
that windows and doors must be closed, except for momentary entry and exit - Answers
-true
A sample of 90 pCi/l is in a vacuum sealed container, but is not measured until 11.5
days later. How much radon gas is left inside? - Answers -11.25 pCi/l
What passive device measures gamma from radon decay products? - Answers -open
faced charcoal
If a check source is unavailable for a continuous monitor, national measurement
protocols recommend that a duplicate should be conducted with what frequency? -
Answers -at least every 10th measurement
Calibrated air flow is extremely important for working level meters. - Answers -true
What is an alpha particle made of? - Answers -2 protons and 2 neutrons
What is stack effect? - Answers -Pressure differential from the inside to outside of home
If exposed to 4 pCi/l over an average lifetime, how many people out of 1,000 who were
smokers would be expected to get lung cancer, according to the EPA? - Answers -62
A homeowner conducted a single short-term measurement with a result of 10pCi/L. The
homeowner asks the Radon Professional what they should do now. According to EPA,
which of the following recommendations should be made? - Answers -perform a short-
term follow-up measurement to confirm and if above 4 mitigate the home
A photomultiplier tube converts weak light or a small amount of photons from a
scintillant into an amplified flow of electrons. - Answers -true
Alpha and Beta counting is associated with which device analysis? - Answers -Liquid
Scintillation Vials
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