Radon Review Quiz 3 Questions and Answers with Complete Solutions 100%
Correct New Update
Radon Review Quiz 3 – 200 Questions & Answers with Rationales (Multiple
Choice)
This comprehensive question bank covers radon measurement, health effects,
mitigation, and certification topics aligned with EPA, NRPP, and NRSB standards
for 2025/2026 . Each question includes the correct answer and a detailed
rationale.
Part 1: Basic Radon Science & Properties (Questions 1-30)
1. What major health problem does radon cause?
A) Blindness
B) Lung cancer
C) Heart problems
D) High blood pressure
,Answer: B) Lung cancer
Rationale: Radon is the second leading cause of lung cancer after smoking,
responsible for approximately 21,000 deaths annually in the U.S. .
2. Radon is primarily produced from the decay of which element?
A) Selenium
B) Plutonium
C) Uranium
D) Radium directly
Answer: C) Uranium
Rationale: Radon-222 is formed by the radioactive decay of Uranium-238, which is
naturally found in soil, rock, and groundwater throughout the U.S. .
,3. 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
Rationale: Radon is a colorless, odorless, tasteless, chemically inert radioactive
gas that occurs naturally from uranium decay .
4. 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
Rationale: The nucleus contains protons (positive charge) and neutrons (neutral
charge). Electrons orbit the nucleus .
5. 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
Correct New Update
Radon Review Quiz 3 – 200 Questions & Answers with Rationales (Multiple
Choice)
This comprehensive question bank covers radon measurement, health effects,
mitigation, and certification topics aligned with EPA, NRPP, and NRSB standards
for 2025/2026 . Each question includes the correct answer and a detailed
rationale.
Part 1: Basic Radon Science & Properties (Questions 1-30)
1. What major health problem does radon cause?
A) Blindness
B) Lung cancer
C) Heart problems
D) High blood pressure
,Answer: B) Lung cancer
Rationale: Radon is the second leading cause of lung cancer after smoking,
responsible for approximately 21,000 deaths annually in the U.S. .
2. Radon is primarily produced from the decay of which element?
A) Selenium
B) Plutonium
C) Uranium
D) Radium directly
Answer: C) Uranium
Rationale: Radon-222 is formed by the radioactive decay of Uranium-238, which is
naturally found in soil, rock, and groundwater throughout the U.S. .
,3. 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
Rationale: Radon is a colorless, odorless, tasteless, chemically inert radioactive
gas that occurs naturally from uranium decay .
4. 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
Rationale: The nucleus contains protons (positive charge) and neutrons (neutral
charge). Electrons orbit the nucleus .
5. 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
