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REHS Sample Exam Questions and Complete Solutions Graded A+
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REHS Sample Exam Questions and Complete Solutions Graded A+
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REHS SampleExam Questions
and Complete
Solutions Graded
A+
Denning [Date] [Course title]
, What are the three things that provide protection against radiation? - Answer: time, distance, sheilding
What scale is used when measuring noise in a sheet metal shop? - Answer: The A-weighted scale is most
commonly used. It considers frequency, intensity , and impact level.
how is ozone created? - Answer: Photochemically. Naturally, as sunlight passes through oxygen
molecules, and by high voltage electricity (lightening). O + UV light
What does sodium thiosulfate do to chlorine? - Answer: It neutralizes it. It destroys the free available
chlorine present without effecting pH
how long does it take class A radioactive waste to degrade to a safe level? - Answer: 100 years.
Where do you sample for radon in schools? - Answer: In stairwells with poor ventilation
What are the characeristsics of alpha particles? - Answer: They are easily absorbed and have low
penetrating ability.
What are the criteria air pollutants? - Answer: Sulfer dioxide, nitrogen oxide, carbon monoxide, lead,
particulate matter
How is dust from a cement kiln cleaned? - Answer: Electrostatic precipitater. Particles pass through an
electrical field, are charged, then are attracted to a plate. the particles then fall into a hopper.
how far can a fly penetrate the soil? - Answer: Compacted, six inches. Uncompacted, five feet.
How do you prevent Lyme disease? - Answer: Avoid ticks. Cover up and use repellant. Remove tick
carefully and seek medical attention. The cause is a spirochete Borrelia burgendorfi.
What are the critical control points in receiving and preparing chicken? - Answer: Temperatures
associated with shipping, receiving, storage, preparation, cooking, cooling, holding (hot and cold) and
reheating.
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