REHS Exam Questions and Answers | Fully
Solved with Reliable Explanations | Grade
A+
• The A-weighted scale is most commonly used. It considers frequency, intensity ,
and impact level. -✓✓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 -✓✓how is ozone created?
• It neutralizes it. It destroys the free available chlorine present without effecting
pH -✓✓What does sodium thiosulfate do to chlorine?
• 100 years. -✓✓how long does it take class A radioactive waste to degrade to a
safe level?
• In stairwells with poor ventilation -✓✓Where do you sample for radon in
schools?
• They are easily absorbed and have low penetrating ability. -✓✓What are the
characeristsics of alpha particles?
• Sulfer dioxide, nitrogen oxide, carbon monoxide, lead, particulate matter -
✓✓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. -✓✓How is dust
from a cement kiln cleaned?
• Compacted, six inches. Uncompacted, five feet. -✓✓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. -✓✓How do you prevent
Lyme disease?
• Temperatures associated with shipping, receiving, storage, preparation, cooking,
cooling, holding (hot and cold) and reheating. -✓✓What are the critical control
points in receiving and preparing chicken?
• It has been properly pasteurized. -✓✓What does it mean when milk tests negative
for phosphates?
• Removal of lead from gasoline -✓✓Why has there been a reduction in blood lead
levels?
• Every three to six months. -✓✓How often does the CDC recommend testing
blood lead levels in children who live in high risk areas?
• A slow sand filtration system. -✓✓What type of filtration system should be
implemented in a small community?
Solved with Reliable Explanations | Grade
A+
• The A-weighted scale is most commonly used. It considers frequency, intensity ,
and impact level. -✓✓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 -✓✓how is ozone created?
• It neutralizes it. It destroys the free available chlorine present without effecting
pH -✓✓What does sodium thiosulfate do to chlorine?
• 100 years. -✓✓how long does it take class A radioactive waste to degrade to a
safe level?
• In stairwells with poor ventilation -✓✓Where do you sample for radon in
schools?
• They are easily absorbed and have low penetrating ability. -✓✓What are the
characeristsics of alpha particles?
• Sulfer dioxide, nitrogen oxide, carbon monoxide, lead, particulate matter -
✓✓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. -✓✓How is dust
from a cement kiln cleaned?
• Compacted, six inches. Uncompacted, five feet. -✓✓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. -✓✓How do you prevent
Lyme disease?
• Temperatures associated with shipping, receiving, storage, preparation, cooking,
cooling, holding (hot and cold) and reheating. -✓✓What are the critical control
points in receiving and preparing chicken?
• It has been properly pasteurized. -✓✓What does it mean when milk tests negative
for phosphates?
• Removal of lead from gasoline -✓✓Why has there been a reduction in blood lead
levels?
• Every three to six months. -✓✓How often does the CDC recommend testing
blood lead levels in children who live in high risk areas?
• A slow sand filtration system. -✓✓What type of filtration system should be
implemented in a small community?
