REHS/RS NEHA UPDATED Exam
Questions and CORRECT Answers
When gas pipe is leaking, what methods would be used by the technician to identify the exact
point of leakage? - CORRECT ANSWER- Using soap bubble solution
Which organization requires cover for baking dough - CORRECT ANSWER- BISSC
(Baking Industry Sanitation Standards Committee)
The Registered Sanitarians are first and foremost: - CORRECT ANSWER- Educators
Common microorganism associated with skin rash in whirlpools? - CORRECT ANSWER-
Pseudomonas aeruginosa
Complaining of extreme eye irritation by swimmers in a swimming pool may be: -
CORRECT ANSWER- Improper pH value
Workers in dental care may receive: - CORRECT ANSWER- Mercury Vapor poisoning
Most accidents that occur in the home to infants aged 1-4 is caused by: - CORRECT
ANSWER- Walking/falling
Most accidents around swimming pools: - CORRECT ANSWER- Drowning
Which can adversely effect the nerve cell? - CORRECT ANSWER- Neurotoxin
High rate of infection: - CORRECT ANSWER- Campylobacter jejuni -- usually found with
Salmonella, caused by contaminated chicken source.
Most enteric disease: (Enteric-related to the digestive system) - CORRECT ANSWER-
Norwalk virus
,The LEAST amount of backfill over the absorption field should be: - CORRECT ANSWER-
12 inches (12-18'')
Best method to avoid UST (Underground Storage Tank)problems: - CORRECT ANSWER-
Prevention from corrosion
Filters will: - CORRECT ANSWER- Reduce stray radiation
Swimmers ear is caused by: - CORRECT ANSWER- Pseudomonas
A principle for effective radiation protection: - CORRECT ANSWER- distance, time,
shielding
Radiation could scatter and bounce off the - CORRECT ANSWER- wall, floor, ceiling
Know characteristics of alpha particles - CORRECT ANSWER- Are they made of protons &
neutrons? Yes
Is absorbed the most matter? No
Do they have a high penetration rate? No
Minimum temperature for laundry in nursing home & health care facilities - CORRECT
ANSWER- 160°F
Which test is initially used if water is suspected of contamination with fecal matter? -
CORRECT ANSWER- FECAL coliform.
Which one is the correct sequence? - CORRECT ANSWER- Coagulation-flocculation-
sedimentation-filtration
The minimum retention time recommended for a septic tank is: - CORRECT ANSWER- 24
hours
Which filter is BEST to use for small communities in developing areas and in rural locations?
- CORRECT ANSWER- Slow sand filter
, Which filter is BEST for removal of Giardia cysts from low turbidity water - CORRECT
ANSWER- Slow sand filter (DE is best for swimming pools and industrial water supplies,
not drinking water)
Microbial pollution travels only a short distance through: - CORRECT ANSWER- Smooth
clay
Backsiphonage may be prevented by all of the following methods except: - CORRECT
ANSWER- Hydrostatic loops
Which of the following is NOT REQUIRED at a water treatment plant? - CORRECT
ANSWER- A Pre-incident Plan
("A water treatment plant should have a well-equipped laboratory, certified operator, and
qualified chemist" -pg 232 of old Salvato book)
Giardia is classified as a - CORRECT ANSWER- protozoa
Which one is most commonly transmitted by food or water? - CORRECT ANSWER-
Hepatitis A
Entamoeba Histolytica is a - CORRECT ANSWER- Protozoa
Which is the preferred field test for a water system (for residual chlorine)? - CORRECT
ANSWER- DPD
Which is the measurement of the amount of light scattered by particles suspended in water
test sample? - CORRECT ANSWER- Nephelometric Turbidity Units (NTU)
Giardia is classified as a: - CORRECT ANSWER- Protozoa
Which is transmitted by food or water? - CORRECT ANSWER- Hepatitis A
Questions and CORRECT Answers
When gas pipe is leaking, what methods would be used by the technician to identify the exact
point of leakage? - CORRECT ANSWER- Using soap bubble solution
Which organization requires cover for baking dough - CORRECT ANSWER- BISSC
(Baking Industry Sanitation Standards Committee)
The Registered Sanitarians are first and foremost: - CORRECT ANSWER- Educators
Common microorganism associated with skin rash in whirlpools? - CORRECT ANSWER-
Pseudomonas aeruginosa
Complaining of extreme eye irritation by swimmers in a swimming pool may be: -
CORRECT ANSWER- Improper pH value
Workers in dental care may receive: - CORRECT ANSWER- Mercury Vapor poisoning
Most accidents that occur in the home to infants aged 1-4 is caused by: - CORRECT
ANSWER- Walking/falling
Most accidents around swimming pools: - CORRECT ANSWER- Drowning
Which can adversely effect the nerve cell? - CORRECT ANSWER- Neurotoxin
High rate of infection: - CORRECT ANSWER- Campylobacter jejuni -- usually found with
Salmonella, caused by contaminated chicken source.
Most enteric disease: (Enteric-related to the digestive system) - CORRECT ANSWER-
Norwalk virus
,The LEAST amount of backfill over the absorption field should be: - CORRECT ANSWER-
12 inches (12-18'')
Best method to avoid UST (Underground Storage Tank)problems: - CORRECT ANSWER-
Prevention from corrosion
Filters will: - CORRECT ANSWER- Reduce stray radiation
Swimmers ear is caused by: - CORRECT ANSWER- Pseudomonas
A principle for effective radiation protection: - CORRECT ANSWER- distance, time,
shielding
Radiation could scatter and bounce off the - CORRECT ANSWER- wall, floor, ceiling
Know characteristics of alpha particles - CORRECT ANSWER- Are they made of protons &
neutrons? Yes
Is absorbed the most matter? No
Do they have a high penetration rate? No
Minimum temperature for laundry in nursing home & health care facilities - CORRECT
ANSWER- 160°F
Which test is initially used if water is suspected of contamination with fecal matter? -
CORRECT ANSWER- FECAL coliform.
Which one is the correct sequence? - CORRECT ANSWER- Coagulation-flocculation-
sedimentation-filtration
The minimum retention time recommended for a septic tank is: - CORRECT ANSWER- 24
hours
Which filter is BEST to use for small communities in developing areas and in rural locations?
- CORRECT ANSWER- Slow sand filter
, Which filter is BEST for removal of Giardia cysts from low turbidity water - CORRECT
ANSWER- Slow sand filter (DE is best for swimming pools and industrial water supplies,
not drinking water)
Microbial pollution travels only a short distance through: - CORRECT ANSWER- Smooth
clay
Backsiphonage may be prevented by all of the following methods except: - CORRECT
ANSWER- Hydrostatic loops
Which of the following is NOT REQUIRED at a water treatment plant? - CORRECT
ANSWER- A Pre-incident Plan
("A water treatment plant should have a well-equipped laboratory, certified operator, and
qualified chemist" -pg 232 of old Salvato book)
Giardia is classified as a - CORRECT ANSWER- protozoa
Which one is most commonly transmitted by food or water? - CORRECT ANSWER-
Hepatitis A
Entamoeba Histolytica is a - CORRECT ANSWER- Protozoa
Which is the preferred field test for a water system (for residual chlorine)? - CORRECT
ANSWER- DPD
Which is the measurement of the amount of light scattered by particles suspended in water
test sample? - CORRECT ANSWER- Nephelometric Turbidity Units (NTU)
Giardia is classified as a: - CORRECT ANSWER- Protozoa
Which is transmitted by food or water? - CORRECT ANSWER- Hepatitis A
