REHS COMPREHENSIVE EXAM 2026 ACTUAL QUESTIONS
AND ANSWERS RATED A+
✔✔Training employes about personal hygiene - ✔✔What is the most important element
in preventing food borne illness?
✔✔It should be checked every hour to two hours and the residual chlorine should be 1.5
to 3.0 ppm (fill and draw pools are prohibited) - ✔✔how often should a wading pool at a
daycare be checked and what should be the result?
✔✔If toe to head, three feet. - ✔✔How far apart do beds have to be placed in daycares?
✔✔Listeria bacterium - ✔✔what causes listerioisis?
✔✔ time, distance, sheilding - ✔✔What are the three things that provide protection
against radiation?
✔✔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?
AND ANSWERS RATED A+
✔✔Training employes about personal hygiene - ✔✔What is the most important element
in preventing food borne illness?
✔✔It should be checked every hour to two hours and the residual chlorine should be 1.5
to 3.0 ppm (fill and draw pools are prohibited) - ✔✔how often should a wading pool at a
daycare be checked and what should be the result?
✔✔If toe to head, three feet. - ✔✔How far apart do beds have to be placed in daycares?
✔✔Listeria bacterium - ✔✔what causes listerioisis?
✔✔ time, distance, sheilding - ✔✔What are the three things that provide protection
against radiation?
✔✔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?
