New Jersey Radon Technician Review
Questions | ACCURATE QUESTIONS
AND ANSWERS (VERIFIED ANSWERS) |
LATEST (2026/2027) UPDATED
VERSION | 100% GUARANTEED PASS
{JUST RELEASED}
1. 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 - ANSWER ✓ (d) is not detected by human senses, is
naturally occurring, does not chemically react
2. The nucleus of an atom consists of:
(a) electrons and protons
(b) neutrons and electrons
(c) protons and neutrons
, (d) protons, neutrons and electrons - ANSWER ✓ (c) protons and neutrons
3. 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
(d) the number of protons and neutrons - ANSWER ✓ (c) the number of
protons
4. 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 - ANSWER ✓ (a) 0.4 pCi/L
outdoors and 1.3 pCi/L indoors
5. 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 - ANSWER ✓ (c) has lost or gained electrons
,6. 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
(c) 2.22 disintegrations per minute within a liter of air
(d) 37 billion disintegrations per second - ANSWER ✓ (c) 2.22
disintegrations per minute within a liter of air
7. 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 - ANSWER ✓ (a) 4 hours
8. 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 - ANSWER ✓ (b) 0.034 WL
, 9. 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 - ANSWER ✓ (b) 7.5 pCi/L
10. 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 - ANSWER ✓ (b) 0.6
11. Which of the following is an INCORRECT statement?
(a) Radon 222 is a radioactive gas
(b) Radon 222 is day product of radium
(c) Radon 222 is an inert gas
(d) Radon 222 once formed, disappears in 3.8 days - ANSWER ✓ (d) Radon
222 once formed, disappears in 3.8 days
Questions | ACCURATE QUESTIONS
AND ANSWERS (VERIFIED ANSWERS) |
LATEST (2026/2027) UPDATED
VERSION | 100% GUARANTEED PASS
{JUST RELEASED}
1. 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 - ANSWER ✓ (d) is not detected by human senses, is
naturally occurring, does not chemically react
2. The nucleus of an atom consists of:
(a) electrons and protons
(b) neutrons and electrons
(c) protons and neutrons
, (d) protons, neutrons and electrons - ANSWER ✓ (c) protons and neutrons
3. 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
(d) the number of protons and neutrons - ANSWER ✓ (c) the number of
protons
4. 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 - ANSWER ✓ (a) 0.4 pCi/L
outdoors and 1.3 pCi/L indoors
5. 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 - ANSWER ✓ (c) has lost or gained electrons
,6. 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
(c) 2.22 disintegrations per minute within a liter of air
(d) 37 billion disintegrations per second - ANSWER ✓ (c) 2.22
disintegrations per minute within a liter of air
7. 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 - ANSWER ✓ (a) 4 hours
8. 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 - ANSWER ✓ (b) 0.034 WL
, 9. 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 - ANSWER ✓ (b) 7.5 pCi/L
10. 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 - ANSWER ✓ (b) 0.6
11. Which of the following is an INCORRECT statement?
(a) Radon 222 is a radioactive gas
(b) Radon 222 is day product of radium
(c) Radon 222 is an inert gas
(d) Radon 222 once formed, disappears in 3.8 days - ANSWER ✓ (d) Radon
222 once formed, disappears in 3.8 days
