New Jersey Radon Technician Review
Questions and Answers 100% Pass
(d) is not detected by human senses, is naturally occurring, does not chemically
react Correct Answer-Which of the following are characteristics of radon?
(a) has no static charge, solid particle, does not react chemically
(b) is a gas, radioactive, can be detected by human senses
(c) is man-made, does not chemically react, is a gas
(d) is not detected by human senses, is naturally occurring, does not chemically
react
(c) protons and neutrons Correct Answer-The nucleus of an atom consists of:
(a) electrons and protons
(b) neutrons and electrons
(c) protons and neutrons
(d) protons, neutrons and electrons
(c) the number of protons Correct Answer-The characteristic of an atom that
determines which element it is is:
(a) the number of electrons
(b) the number of neutrons
(c) the number of protons
, New Jersey Radon Technician Review
Questions and Answers 100% Pass
(d) the number of protons and neutrons
(a) 0.4 pCi/L outdoors and 1.3 pCi/L indoors Correct Answer-The annual
average U.S. outdoor and indoor radon levels are:
(a) 0.4 pCi/L outdoors and 1.3 pCi/L indoors
(b) 0.5 pCi/L outdoors and 4.0 pCi/L indoors
(c) 0.6 pCi/L outdoors and 4.0 pCi/L indoors
(d) 0.7 pCi/L outdoors and 1.3 pCi/L indoors
(c) has lost or gained electrons Correct Answer-An ion is an atom that:
(a) cannot accept additional electrons
(b) cannot eliminate additional electrons
(c) has lost or gained electrons
(d) has no electrons
(c) 2.22 disintegrations per minute within a liter of air Correct Answer-One
picoCurie per liter of radon is defined as:
(a) one billionth of a Curie
(b) 2.22 disintegrations per minute per gram of air
, New Jersey Radon Technician Review
Questions and Answers 100% Pass
(c) 2.22 disintegrations per minute within a liter of air
(d) 37 billion disintegrations per second
(a) 4 hours Correct Answer-It takes _____ hours for radon to reach secular
equilibrium with its short-lived decay products.
(a) 4 hours
(b) 12 hours
(c) 24 hours
(d) 48 hours
(b) 0.034 WL Correct Answer-If the radon concentration is 8 pCi/L what is the
Working Level of radon decay products using common assumptions of
equilibrium ER = 0.4?
(a) 0.024 WL
(b) 0.034 WL
(c) 0.040 WL
(d) 0.048 WL
, New Jersey Radon Technician Review
Questions and Answers 100% Pass
(b) 7.5 pCi/L Correct Answer-If the Working Level concentration is 0.03 WL,
using common assumptions of equilibrium (ER = 0.4), what is the radon
concentration in the room?
(a) 10.0 pCi/L
(b) 7.5 pCi/L
(c) 6.0 pCi/L
(d) 5.0 pCi/L
(b) 0.6 Correct Answer-If the Working Level concentration is 0.06 and the
radon concentration is 10 pCi/L, what is the Equilibrium Ratio?
(a) 0.4
(b) 0.6
(c) 1.0
(d) 4.0
(d) Radon 222 once formed, disappears in 3.8 days Correct Answer-Which of
the following is an INCORRECT statement?
(a) Radon 222 is a radioactive gas
(b) Radon 222 is day product of radium
Questions and Answers 100% Pass
(d) is not detected by human senses, is naturally occurring, does not chemically
react Correct Answer-Which of the following are characteristics of radon?
(a) has no static charge, solid particle, does not react chemically
(b) is a gas, radioactive, can be detected by human senses
(c) is man-made, does not chemically react, is a gas
(d) is not detected by human senses, is naturally occurring, does not chemically
react
(c) protons and neutrons Correct Answer-The nucleus of an atom consists of:
(a) electrons and protons
(b) neutrons and electrons
(c) protons and neutrons
(d) protons, neutrons and electrons
(c) the number of protons Correct Answer-The characteristic of an atom that
determines which element it is is:
(a) the number of electrons
(b) the number of neutrons
(c) the number of protons
, New Jersey Radon Technician Review
Questions and Answers 100% Pass
(d) the number of protons and neutrons
(a) 0.4 pCi/L outdoors and 1.3 pCi/L indoors Correct Answer-The annual
average U.S. outdoor and indoor radon levels are:
(a) 0.4 pCi/L outdoors and 1.3 pCi/L indoors
(b) 0.5 pCi/L outdoors and 4.0 pCi/L indoors
(c) 0.6 pCi/L outdoors and 4.0 pCi/L indoors
(d) 0.7 pCi/L outdoors and 1.3 pCi/L indoors
(c) has lost or gained electrons Correct Answer-An ion is an atom that:
(a) cannot accept additional electrons
(b) cannot eliminate additional electrons
(c) has lost or gained electrons
(d) has no electrons
(c) 2.22 disintegrations per minute within a liter of air Correct Answer-One
picoCurie per liter of radon is defined as:
(a) one billionth of a Curie
(b) 2.22 disintegrations per minute per gram of air
, New Jersey Radon Technician Review
Questions and Answers 100% Pass
(c) 2.22 disintegrations per minute within a liter of air
(d) 37 billion disintegrations per second
(a) 4 hours Correct Answer-It takes _____ hours for radon to reach secular
equilibrium with its short-lived decay products.
(a) 4 hours
(b) 12 hours
(c) 24 hours
(d) 48 hours
(b) 0.034 WL Correct Answer-If the radon concentration is 8 pCi/L what is the
Working Level of radon decay products using common assumptions of
equilibrium ER = 0.4?
(a) 0.024 WL
(b) 0.034 WL
(c) 0.040 WL
(d) 0.048 WL
, New Jersey Radon Technician Review
Questions and Answers 100% Pass
(b) 7.5 pCi/L Correct Answer-If the Working Level concentration is 0.03 WL,
using common assumptions of equilibrium (ER = 0.4), what is the radon
concentration in the room?
(a) 10.0 pCi/L
(b) 7.5 pCi/L
(c) 6.0 pCi/L
(d) 5.0 pCi/L
(b) 0.6 Correct Answer-If the Working Level concentration is 0.06 and the
radon concentration is 10 pCi/L, what is the Equilibrium Ratio?
(a) 0.4
(b) 0.6
(c) 1.0
(d) 4.0
(d) Radon 222 once formed, disappears in 3.8 days Correct Answer-Which of
the following is an INCORRECT statement?
(a) Radon 222 is a radioactive gas
(b) Radon 222 is day product of radium
