RS/REHS Practice Questions 2026/2027 |
Authentic Exam Questions | Full Answer Key
| A+
• What is the graphic tool used by meteorologists to give a succinct view of how wind
speed and direction are typically distributed at a particular location -✓✓Wind Rose
• What is the lowest portion of Earth's atmosphere called: -✓✓troposphere (a height of
about 3.7-6.2 miles (6-10 km)
• What three viruses cause the largest number of known
cases of illness through contaminated food: -✓✓Hepatitis, Rotavirus, Norovirus
• Shellfish poisoning is caused by a group of toxins produced by: -✓✓planktonic algae
(dinoflagellates, in most cases)
• What is the most widely accepted detection method for the saxitoxins (Paralytic
Shellfish Poisoning) around the world: -✓✓mouse bioassay (not as useful in Diarrhetic
Shellfish Poisoning or Neurotoxic Shellfish Poisoning)
• Pufferfish (also called "fugu" or "blowfish") are thought of as a delicacy - even though
they contain this toxin: -✓✓tetrodotoxin (in some types of pufferfish, some of the organs
like the liver and skin contain tetrodotoxin; in some pufferfish the toxin is in the meat
also; and some have no toxin at all)
• Compounds that cause neurological symptoms such as profuse sweating, coma,
convulsions, hallucinations, excitement, depression, spastic colon -✓✓Neurotoxins
• Compounds that produce rapid, transient nausea, vomiting, abdominal cramping, and
diarrhea: -✓✓gastrointestinal irritants
• mushrooms in this category generally are nontoxic and produce no symptoms, unless
alcohol is consumed within 72 hours after eating them, in which case a short-lived,
acute toxic syndrome is produced: -✓✓disulfiram‐like toxins
• This is is a human illness caused by consumption of some subtropical and tropical
marine finfish -✓✓Ciguatera fish poisoning (caused by consumption of subtropical and
tropical marine finfish that have accumulated ciguatoxins through their diets)
• Powdered infant formula is not sterile, and its nutrients provide good conditions for the
growth of -✓✓Cronobacter (after reconstitution)
,• Travelers diarrhea is caused by which E. Coli (acronym)? -✓✓ETEC (Enterotoxigenic
Escherichia coli)
• Cholera is caused by which bacteria -✓✓Vibrio (but not all Vibrio cause cholera)
• Q fever is caused by which food borne illness causing bacteria -✓✓Coxiella burnetii
(the CDC has declared it a Category B potential bioterrorism agent)
• Plant FOODS that are cooked for hot holding shall be cooked to a temperature of -
✓✓135F
• How long must POULTRY, BALUTS, wild GAME ANIMALS (as specified under
Subparagraphs 3-201.17(A)(3) and (4)), stuffed FISH, stuffed MEAT, stuffed pasta,
stuffed POULTRY, stuffed RATITES, or stuffing containing FISH, MEAT, POULTRY, or
RATITES be cooked at 165F? -✓✓instantaneous
• Fish to be served raw must be frozen how cold for how long? (except some Tuna and
aquaculture fish) -✓✓-4F for 7 days, -31 for 15 hours, frozen to-31F until solid then
stored -4°F for 24 hours
• If immersion in hot water is used for SANITIZING in a manual operation, the
temperature of the water shall be maintained at -✓✓171F or above
• Total alkalinity of swimming pools shall be maintained in the range of: -✓✓60-180
ppm (mg/l)
• the thick-walled, environmentally resistant structure released in the feces of infected
animals that serves to transfer the infectious stages of sporozoan parasites (e.g.,
Cryptosporidium) to new hosts. -✓✓Oocyst
• Milligrams per Liter (mg/L) is the equivalent metric measure to: -✓✓parts per million
(ppm)
• liable to ignite spontaneously on exposure to air -✓✓Pyrophoric
• "RATITE" means -✓✓a flightless bird such as an emu, ostrich, or rhea.
• Which organization requires cover for baking dough -✓✓BISSC (Baking Industry
Sanitation Standards Committee)
• The Registered Sanitarians are first and foremost: -✓✓Educators
• Common microorganism associated with skin rash in whirlpools? -✓✓Pseudomonas
aeruginosa
, • Complaining of extreme eye irritation by swimmers in a swimming pool may be: -
✓✓Improper pH value
• Workers in dental care may receive: -✓✓Mercury Vapor poisoning
• Most accidents that occur in the home to infants aged 1-4 is caused by: -
✓✓Walking/falling
• Most accidents around swimming pools: -✓✓Drowning
• Which can adversely effect the nerve cell? -✓✓Neurotoxin
• This is usually found with Salmonella, caused by contaminated chicken source. High
rate of infection: -✓✓Campylobacter jejuni
• What is the most enteric disease: -✓✓Norwalk virus
• The LEAST amount of backfill over the absorption field should be: -✓✓12-18 inches
• Best method to avoid UST (Underground Storage Tank)problems: -✓✓Prevent
corrosion
• Filters will: -✓✓Reduce stray radiation
• Swimmers ear is caused by: -✓✓Pseudomonas
• A principle for effective radiation protection: -✓✓distance, time, shielding
• Radiation could scatter and bounce off the -✓✓wall, floor, ceiling
• Know characteristics of alpha particles -✓✓Are they made of protons & neutrons? Yes
Is absorbed the most matter? No
Do they have a high penetration rate? No
• Which test is initially used if water is suspected of contamination with fecal matter? -
✓✓FECAL coliform.
• Which one is the correct sequence? -✓✓Coagulation-flocculation-sedimentation-
filtration
• The minimum retention time recommended for a septic tank is: -✓✓24 hours
Authentic Exam Questions | Full Answer Key
| A+
• What is the graphic tool used by meteorologists to give a succinct view of how wind
speed and direction are typically distributed at a particular location -✓✓Wind Rose
• What is the lowest portion of Earth's atmosphere called: -✓✓troposphere (a height of
about 3.7-6.2 miles (6-10 km)
• What three viruses cause the largest number of known
cases of illness through contaminated food: -✓✓Hepatitis, Rotavirus, Norovirus
• Shellfish poisoning is caused by a group of toxins produced by: -✓✓planktonic algae
(dinoflagellates, in most cases)
• What is the most widely accepted detection method for the saxitoxins (Paralytic
Shellfish Poisoning) around the world: -✓✓mouse bioassay (not as useful in Diarrhetic
Shellfish Poisoning or Neurotoxic Shellfish Poisoning)
• Pufferfish (also called "fugu" or "blowfish") are thought of as a delicacy - even though
they contain this toxin: -✓✓tetrodotoxin (in some types of pufferfish, some of the organs
like the liver and skin contain tetrodotoxin; in some pufferfish the toxin is in the meat
also; and some have no toxin at all)
• Compounds that cause neurological symptoms such as profuse sweating, coma,
convulsions, hallucinations, excitement, depression, spastic colon -✓✓Neurotoxins
• Compounds that produce rapid, transient nausea, vomiting, abdominal cramping, and
diarrhea: -✓✓gastrointestinal irritants
• mushrooms in this category generally are nontoxic and produce no symptoms, unless
alcohol is consumed within 72 hours after eating them, in which case a short-lived,
acute toxic syndrome is produced: -✓✓disulfiram‐like toxins
• This is is a human illness caused by consumption of some subtropical and tropical
marine finfish -✓✓Ciguatera fish poisoning (caused by consumption of subtropical and
tropical marine finfish that have accumulated ciguatoxins through their diets)
• Powdered infant formula is not sterile, and its nutrients provide good conditions for the
growth of -✓✓Cronobacter (after reconstitution)
,• Travelers diarrhea is caused by which E. Coli (acronym)? -✓✓ETEC (Enterotoxigenic
Escherichia coli)
• Cholera is caused by which bacteria -✓✓Vibrio (but not all Vibrio cause cholera)
• Q fever is caused by which food borne illness causing bacteria -✓✓Coxiella burnetii
(the CDC has declared it a Category B potential bioterrorism agent)
• Plant FOODS that are cooked for hot holding shall be cooked to a temperature of -
✓✓135F
• How long must POULTRY, BALUTS, wild GAME ANIMALS (as specified under
Subparagraphs 3-201.17(A)(3) and (4)), stuffed FISH, stuffed MEAT, stuffed pasta,
stuffed POULTRY, stuffed RATITES, or stuffing containing FISH, MEAT, POULTRY, or
RATITES be cooked at 165F? -✓✓instantaneous
• Fish to be served raw must be frozen how cold for how long? (except some Tuna and
aquaculture fish) -✓✓-4F for 7 days, -31 for 15 hours, frozen to-31F until solid then
stored -4°F for 24 hours
• If immersion in hot water is used for SANITIZING in a manual operation, the
temperature of the water shall be maintained at -✓✓171F or above
• Total alkalinity of swimming pools shall be maintained in the range of: -✓✓60-180
ppm (mg/l)
• the thick-walled, environmentally resistant structure released in the feces of infected
animals that serves to transfer the infectious stages of sporozoan parasites (e.g.,
Cryptosporidium) to new hosts. -✓✓Oocyst
• Milligrams per Liter (mg/L) is the equivalent metric measure to: -✓✓parts per million
(ppm)
• liable to ignite spontaneously on exposure to air -✓✓Pyrophoric
• "RATITE" means -✓✓a flightless bird such as an emu, ostrich, or rhea.
• Which organization requires cover for baking dough -✓✓BISSC (Baking Industry
Sanitation Standards Committee)
• The Registered Sanitarians are first and foremost: -✓✓Educators
• Common microorganism associated with skin rash in whirlpools? -✓✓Pseudomonas
aeruginosa
, • Complaining of extreme eye irritation by swimmers in a swimming pool may be: -
✓✓Improper pH value
• Workers in dental care may receive: -✓✓Mercury Vapor poisoning
• Most accidents that occur in the home to infants aged 1-4 is caused by: -
✓✓Walking/falling
• Most accidents around swimming pools: -✓✓Drowning
• Which can adversely effect the nerve cell? -✓✓Neurotoxin
• This is usually found with Salmonella, caused by contaminated chicken source. High
rate of infection: -✓✓Campylobacter jejuni
• What is the most enteric disease: -✓✓Norwalk virus
• The LEAST amount of backfill over the absorption field should be: -✓✓12-18 inches
• Best method to avoid UST (Underground Storage Tank)problems: -✓✓Prevent
corrosion
• Filters will: -✓✓Reduce stray radiation
• Swimmers ear is caused by: -✓✓Pseudomonas
• A principle for effective radiation protection: -✓✓distance, time, shielding
• Radiation could scatter and bounce off the -✓✓wall, floor, ceiling
• Know characteristics of alpha particles -✓✓Are they made of protons & neutrons? Yes
Is absorbed the most matter? No
Do they have a high penetration rate? No
• Which test is initially used if water is suspected of contamination with fecal matter? -
✓✓FECAL coliform.
• Which one is the correct sequence? -✓✓Coagulation-flocculation-sedimentation-
filtration
• The minimum retention time recommended for a septic tank is: -✓✓24 hours
