REHS EXAM CERTIFICATION REVIEW SET
2026 QUESTIONS WITH ANSWERS GRADED
A+
⫸ The A-weighted scale is most commonly used. It considers
frequency, intensity , and impact level. Answer: What scale is used
when measuring noise in a sheet metal shop?
⫸ Photochemically. Naturally, as sunlight passes through oxygen
molecules, and by high voltage electricity (lightening). O + UV light
Answer: how is ozone created?
⫸ It neutralizes it. It destroys the free available chlorine present without
effecting pH Answer: What does sodium thiosulfate do to chlorine?
⫸ 100 years. Answer: how long does it take class A radioactive waste to
degrade to a safe level?
⫸ In stairwells with poor ventilation Answer: Where do you sample for
radon in schools?
⫸ They are easily absorbed and have low penetrating ability. Answer:
What are the characeristsics of alpha particles?
⫸ Sulfer dioxide, nitrogen oxide, carbon monoxide, lead, particulate
matter Answer: What are the criteria air pollutants?
, ⫸ Electrostatic precipitater. Particles pass through an electrical field, are
charged, then are attracted to a plate. the particles then fall into a hopper.
Answer: How is dust from a cement kiln cleaned?
⫸ Compacted, six inches. Uncompacted, five feet. Answer: how far can
a fly penetrate the soil?
⫸ Avoid ticks. Cover up and use repellant. Remove tick carefully and
seek medical attention. The cause is a spirochete Borrelia burgendorfi.
Answer: How do you prevent Lyme disease?
⫸ Temperatures associated with shipping, receiving, storage,
preparation, cooking, cooling, holding (hot and cold) and reheating.
Answer: What are the critical control points in receiving and preparing
chicken?
⫸ It has been properly pasteurized. Answer: What does it mean when
milk tests negative for phosphates?
⫸ Removal of lead from gasoline Answer: Why has there been a
reduction in blood lead levels?
⫸ Every three to six months. Answer: How often does the CDC
recommend testing blood lead levels in children who live in high risk
areas?
2026 QUESTIONS WITH ANSWERS GRADED
A+
⫸ The A-weighted scale is most commonly used. It considers
frequency, intensity , and impact level. Answer: What scale is used
when measuring noise in a sheet metal shop?
⫸ Photochemically. Naturally, as sunlight passes through oxygen
molecules, and by high voltage electricity (lightening). O + UV light
Answer: how is ozone created?
⫸ It neutralizes it. It destroys the free available chlorine present without
effecting pH Answer: What does sodium thiosulfate do to chlorine?
⫸ 100 years. Answer: how long does it take class A radioactive waste to
degrade to a safe level?
⫸ In stairwells with poor ventilation Answer: Where do you sample for
radon in schools?
⫸ They are easily absorbed and have low penetrating ability. Answer:
What are the characeristsics of alpha particles?
⫸ Sulfer dioxide, nitrogen oxide, carbon monoxide, lead, particulate
matter Answer: What are the criteria air pollutants?
, ⫸ Electrostatic precipitater. Particles pass through an electrical field, are
charged, then are attracted to a plate. the particles then fall into a hopper.
Answer: How is dust from a cement kiln cleaned?
⫸ Compacted, six inches. Uncompacted, five feet. Answer: how far can
a fly penetrate the soil?
⫸ Avoid ticks. Cover up and use repellant. Remove tick carefully and
seek medical attention. The cause is a spirochete Borrelia burgendorfi.
Answer: How do you prevent Lyme disease?
⫸ Temperatures associated with shipping, receiving, storage,
preparation, cooking, cooling, holding (hot and cold) and reheating.
Answer: What are the critical control points in receiving and preparing
chicken?
⫸ It has been properly pasteurized. Answer: What does it mean when
milk tests negative for phosphates?
⫸ Removal of lead from gasoline Answer: Why has there been a
reduction in blood lead levels?
⫸ Every three to six months. Answer: How often does the CDC
recommend testing blood lead levels in children who live in high risk
areas?
