RADON TEST SPRUCE CERTIFICATION
SCRIPT 2026 QUESTIONS WITH
SOLUTIONS GRADED A+
◍ Which of the following are characteristics of Radon?a. Has no static charge,
solid particle, does not react chemicallyb. Is a gas, radioactive, can be
detected by human sensesc. Is manmade, does not chemically react, is a
gasd. 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
◍ The nucleus of an atom consists ofa. electrons and protonsb. neutrons and
electronsc. protons and neutronsd. protons, neutrons, and electrons.
Answer: c. protons and neutrons
◍ What is this test?.
Answer: Absolute bullshit filled with trick questions, and cheap verbiage
meant to trick and deter takers
◍ The four Soil Suction Mitigation techniques.
Answer: Subslab suction,drain-tile suction,sump-hole suction,or block-wall
suction
◍ The characteristic of an atom that determines which element it isa. number
of electronsb. number of neutronsc. number of protonsd. number of protons
and neutrons.
Answer: c. number of protons
◍ What is an Alpha Particle?.
Answer: Two neutrons and two protons bound as a single particle emitted
from the nucleus of certain radioactive isotopes in the process of decay.
,◍ Closed House Procedures.
Answer: During any short-term test, closed-house conditions should be
maintained as much as possible while the test is in progress. In tests lasting
fewer than four days, closed-house conditions should be maintained for at
least twelve hours before starting the test, as well as for the duration of the
test. While closed-house conditions are not required before starting tests
lasting between four and ninety days, they should be maintained as much as
possible.
◍ The annual average of outdoor and indoor Radon levels area. 0.4 pCi/L
outdoors; 1.3 pCi/L indoorsb. 0.5 pCi/L outdoors; 4.0 pCi/L indoorsc. 0.6
pCi/L outdoors; 4.0 pCi/L indoorsd. 0.7 pCi/L outdoors; 1.3 pCi/L indoors.
Answer: a. 0.4 pCi/L outdoors; 1.3 pCi/L indoors
◍ Curie.
Answer: a standard measurement for radioactivity, specifically, the rate of
decay for a gram of radium at 37 billion decays per second; a unit of
radioactivity equal to 3.7 x 1010 disintegrations per second.
◍ An ion is an atom thata. cannot accept additional electronsb. cannot
eliminate additional electronsc. has lost or gained electronsd. has no
electrons.
Answer: c. has lost or gained electrons
◍ Equilibrium Ration.
Answer: At complete equilibrium (i.e., at an equilibrium ratio of 1), 1 WL of
RDPs would be present at the radon concentration of 100 pCi/L. The ratio is
never 1 in a house; due to ventilation and plate-out, the RDPs never reach
equilibrium in a residential environment. A commonly assumed equilibrium
ratio is 0.5 (i.e., the decay products are halfway toward equilibrium), in
which case 1 WL would correspond to 200 pCi/L. However, equilibrium
ratios vary with time and location, and ratios of 0.3 to 0.7 are commonly
observed.
◍ One picocurie per liter of Radon is defined asa. one billionth of a curieb.
, 2.22 disintegrations per minute per gram of airc. 2.22 disintegrations per
minute within a liter of aird. 37 billion disintegrations per second.
Answer: c. 2.22 disintegrations per minute within a liter of air
◍ It takes ________ hours for Radon to reach secular equilibrium with its
short lived decay products.a. 4 hoursb. 12 hoursc. 24 hoursd. 48 hours.
Answer: a. 4 hours
◍ Picocurie (pCi):.
Answer: one pCi is one-trillionth of a curie, 0.037 disintegrations per
second, or 2.22 disintegrations per minute.
◍ If the Radon concentration is 8 pCi/L what is the working level of Radon
Decay Products using common assumptions of equilibrium?a. 0.02 WLb.
0.04 WLc. 0.50 WLd. 1.00 WL.
Answer: b. 0.04 WL
◍ If the Working Level concentration is 0.03 WL, using common assumptions
of equilibrium what is the Radon concentration in the room?a. 0.5 pCi/Lb.
2.0 pCi/Lc. 4.0 pCi/Ld. 6.0 pCi/L.
Answer: d. 6.0 pCi/L
◍ If the Working Level concentration is 0.06 and the Radon concentration is
10 pCi/L, what is the equilibrium ratio?a. 0.4b. 0.6c. 1.0d. 4.0.
Answer: b. 0.6
◍ Which of the following is an incorrect statement?a. Radon 222 is a
radioactive gas.b. Radon 222 is a 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, disappeared in 3.8 days.
◍ Which of the following is not necessarily a correct statement?a. A
measurement of 0.02 WL of RDP means 4 pCi/L of Radon exists in the
room.b. One picocurie is one trillionth of a curie.c. One pCi/L is equal to
2.22 disintegrations in a liter of air in a minute.d. WL is defined as the alpha
energy released from RD
P. .
SCRIPT 2026 QUESTIONS WITH
SOLUTIONS GRADED A+
◍ Which of the following are characteristics of Radon?a. Has no static charge,
solid particle, does not react chemicallyb. Is a gas, radioactive, can be
detected by human sensesc. Is manmade, does not chemically react, is a
gasd. 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
◍ The nucleus of an atom consists ofa. electrons and protonsb. neutrons and
electronsc. protons and neutronsd. protons, neutrons, and electrons.
Answer: c. protons and neutrons
◍ What is this test?.
Answer: Absolute bullshit filled with trick questions, and cheap verbiage
meant to trick and deter takers
◍ The four Soil Suction Mitigation techniques.
Answer: Subslab suction,drain-tile suction,sump-hole suction,or block-wall
suction
◍ The characteristic of an atom that determines which element it isa. number
of electronsb. number of neutronsc. number of protonsd. number of protons
and neutrons.
Answer: c. number of protons
◍ What is an Alpha Particle?.
Answer: Two neutrons and two protons bound as a single particle emitted
from the nucleus of certain radioactive isotopes in the process of decay.
,◍ Closed House Procedures.
Answer: During any short-term test, closed-house conditions should be
maintained as much as possible while the test is in progress. In tests lasting
fewer than four days, closed-house conditions should be maintained for at
least twelve hours before starting the test, as well as for the duration of the
test. While closed-house conditions are not required before starting tests
lasting between four and ninety days, they should be maintained as much as
possible.
◍ The annual average of outdoor and indoor Radon levels area. 0.4 pCi/L
outdoors; 1.3 pCi/L indoorsb. 0.5 pCi/L outdoors; 4.0 pCi/L indoorsc. 0.6
pCi/L outdoors; 4.0 pCi/L indoorsd. 0.7 pCi/L outdoors; 1.3 pCi/L indoors.
Answer: a. 0.4 pCi/L outdoors; 1.3 pCi/L indoors
◍ Curie.
Answer: a standard measurement for radioactivity, specifically, the rate of
decay for a gram of radium at 37 billion decays per second; a unit of
radioactivity equal to 3.7 x 1010 disintegrations per second.
◍ An ion is an atom thata. cannot accept additional electronsb. cannot
eliminate additional electronsc. has lost or gained electronsd. has no
electrons.
Answer: c. has lost or gained electrons
◍ Equilibrium Ration.
Answer: At complete equilibrium (i.e., at an equilibrium ratio of 1), 1 WL of
RDPs would be present at the radon concentration of 100 pCi/L. The ratio is
never 1 in a house; due to ventilation and plate-out, the RDPs never reach
equilibrium in a residential environment. A commonly assumed equilibrium
ratio is 0.5 (i.e., the decay products are halfway toward equilibrium), in
which case 1 WL would correspond to 200 pCi/L. However, equilibrium
ratios vary with time and location, and ratios of 0.3 to 0.7 are commonly
observed.
◍ One picocurie per liter of Radon is defined asa. one billionth of a curieb.
, 2.22 disintegrations per minute per gram of airc. 2.22 disintegrations per
minute within a liter of aird. 37 billion disintegrations per second.
Answer: c. 2.22 disintegrations per minute within a liter of air
◍ It takes ________ hours for Radon to reach secular equilibrium with its
short lived decay products.a. 4 hoursb. 12 hoursc. 24 hoursd. 48 hours.
Answer: a. 4 hours
◍ Picocurie (pCi):.
Answer: one pCi is one-trillionth of a curie, 0.037 disintegrations per
second, or 2.22 disintegrations per minute.
◍ If the Radon concentration is 8 pCi/L what is the working level of Radon
Decay Products using common assumptions of equilibrium?a. 0.02 WLb.
0.04 WLc. 0.50 WLd. 1.00 WL.
Answer: b. 0.04 WL
◍ If the Working Level concentration is 0.03 WL, using common assumptions
of equilibrium what is the Radon concentration in the room?a. 0.5 pCi/Lb.
2.0 pCi/Lc. 4.0 pCi/Ld. 6.0 pCi/L.
Answer: d. 6.0 pCi/L
◍ If the Working Level concentration is 0.06 and the Radon concentration is
10 pCi/L, what is the equilibrium ratio?a. 0.4b. 0.6c. 1.0d. 4.0.
Answer: b. 0.6
◍ Which of the following is an incorrect statement?a. Radon 222 is a
radioactive gas.b. Radon 222 is a 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, disappeared in 3.8 days.
◍ Which of the following is not necessarily a correct statement?a. A
measurement of 0.02 WL of RDP means 4 pCi/L of Radon exists in the
room.b. One picocurie is one trillionth of a curie.c. One pCi/L is equal to
2.22 disintegrations in a liter of air in a minute.d. WL is defined as the alpha
energy released from RD
P. .
