NEHA RS PRACTICE EXAM Questions
and Answers Latest Version 2025 TOP
RATED A+
A non-pressure-type vacuum breaker - Correct answer-The flushometer valve is
typically protected by
Concrete grouting - Correct answer-(Blank) is used to properly seal a drilled well to
prevent contamination of the water supply
USDA and EPA - Correct answer-The release of genetically engineered materials to the
environment is regulated by
Sulfuric acid - Correct answer-Vent gases combined with high moisture inside a
chimney will form
Biosafety level 2 - Correct answer-The biosafety containment level suitable for work
involving agents of moderate potential hazard to personnel and the environment is
1954 - Correct answer-Mobile homes have been in general production since
Increased containment - Correct answer-Those laboratory activities that may result in
personnel exposure to aerosols may result in
Lungs - Correct answer-The Muerto Canyon virus causes disease of the ______ in
humans.
40 ft2 - Correct answer-A minimum of ______ of sleeping area per person is required in
the APHA appraisal method.
Deer mice - Correct answer-Muerto Canyon virus (MCV) is a hantavirus mainly carried
by
2 inches - Correct answer-The waste discharge pipe from any appliance directly
connected to the potable water system should terminate at least ______ above the rim
of a or receptacle directly connected to the drainage system.
1 year - Correct answer-Biological safety cabinets should be performance tested every
,20 feet3 - Correct answer-Office space should provide at least ______ per minute per
occupant of clean outside air at minimum where smoking is not prohibited.
24 inches - Correct answer-To prevent chimney backdrafts, the chimney must be
constructed ______ inches above the highest point of the roof at a minimum.
Acids which eat away at chimney mortar - Correct answer-The high moisture content of
combustion vent gases create
76 degrees - Correct answer-The ASHRAE recommended minimal thermal standard for
dwellings is ______ degrees F at 40% humidity and an air circulation rate of 45 fpm.
60% - Correct answer-Excessive condensation, corrosion, and mildew occur when the
relative humidity exceeds
OSHA - Correct answer-Regulation of bloodborne pathogens is promulgated by
160 to 167 degrees F - Correct answer-Minimum wash water temperature in a hospital
laundry is
1970 - Correct answer-Lead poisoning is commonly associated with children living in
homes built before
Owner and occupant jointly - Correct answer-In the APHA-PHS Recommended Housing
Maintenance and Occupancy Ordinance, the responsibility of storing and disposing of
all rubbish is assigned to the
Eight - Correct answer-It is recommended that a minimum of one toilet be provided for
each ______ beds in a hospital or nursing home.
Fit the expected number of swimmers - Correct answer-The pool must be designed to
(blank)
Schistosomiasis - Correct answer-"Swimmers itch" is also known as
10 feet - Correct answer-The minimum recommended depth of water under a 1 meter
board (1 meter high) is
Iodine - Correct answer-Chemicals that have been used for pool disinfection include
chlorine, chlorinated cyanurates, bromine and
Sodium carbonate - Correct answer-To raise the pH, add
Regardless of bathing water quality - Correct answer-Some studies indicate that
swimmers have a higher over-all illness rate than do non-swimmers
, 7.5 and 7.6 - Correct answer-A pH between _____ and _____ is optimal PH control for
eye irritation, but is not optimal for chlorine effectiveness.
Travel trailer - Correct answer-A vehicle built on a chassis and having a body of not
more than 8-feet wide and 32-feet long designed for travel, recreation, and vacation use
is
Every 20 ft. - Correct answer-In large pools with outlets more than 5 feet from the end
wall, pool inlets should be located
Alum - Correct answer-A chemical commonly used to improve water clarity is
Is 62% molecular at a pH of 7.2 - Correct answer-The molecular state of hypochlorous
acid is the desired product from chlorination of pool waters. This product
Prevent loss of disinfectant - Correct answer-Pool inlets should be located a minimum of
10 inches to 15 inches below the water line to
Raise alkalinity - Correct answer-The addition of sodium bicarbonate is usually used to
6-8 hours - Correct answer-A pool filtration system should filter the entire volume of
water every ______.
1.0 to 3.0 mg/l - Correct answer-An operating free chlorine residual of ______ is usually
required in practice.
2 feet - Correct answer-The water depth should clearly be marked on the pool perimeter
for every ______ of depth change
100% available - Correct answer-Gas chlorine is considered
15 gpm/ft2 - Correct answer-The backwash rate for both conventional, rapid and high
rate sand filters is
60% - Correct answer-The gutters or skimmers receive a minimum of ______ of the
total pool water due to the large quantity of organisms and materials which typically
float.
HOCL - Correct answer-Primary product when chlorine is added to water is (blank)
1 to 2 hours - Correct answer-Water in wading pools should be completely recirculated
every
Add acid to water - Correct answer-To mix acid and water, always
and Answers Latest Version 2025 TOP
RATED A+
A non-pressure-type vacuum breaker - Correct answer-The flushometer valve is
typically protected by
Concrete grouting - Correct answer-(Blank) is used to properly seal a drilled well to
prevent contamination of the water supply
USDA and EPA - Correct answer-The release of genetically engineered materials to the
environment is regulated by
Sulfuric acid - Correct answer-Vent gases combined with high moisture inside a
chimney will form
Biosafety level 2 - Correct answer-The biosafety containment level suitable for work
involving agents of moderate potential hazard to personnel and the environment is
1954 - Correct answer-Mobile homes have been in general production since
Increased containment - Correct answer-Those laboratory activities that may result in
personnel exposure to aerosols may result in
Lungs - Correct answer-The Muerto Canyon virus causes disease of the ______ in
humans.
40 ft2 - Correct answer-A minimum of ______ of sleeping area per person is required in
the APHA appraisal method.
Deer mice - Correct answer-Muerto Canyon virus (MCV) is a hantavirus mainly carried
by
2 inches - Correct answer-The waste discharge pipe from any appliance directly
connected to the potable water system should terminate at least ______ above the rim
of a or receptacle directly connected to the drainage system.
1 year - Correct answer-Biological safety cabinets should be performance tested every
,20 feet3 - Correct answer-Office space should provide at least ______ per minute per
occupant of clean outside air at minimum where smoking is not prohibited.
24 inches - Correct answer-To prevent chimney backdrafts, the chimney must be
constructed ______ inches above the highest point of the roof at a minimum.
Acids which eat away at chimney mortar - Correct answer-The high moisture content of
combustion vent gases create
76 degrees - Correct answer-The ASHRAE recommended minimal thermal standard for
dwellings is ______ degrees F at 40% humidity and an air circulation rate of 45 fpm.
60% - Correct answer-Excessive condensation, corrosion, and mildew occur when the
relative humidity exceeds
OSHA - Correct answer-Regulation of bloodborne pathogens is promulgated by
160 to 167 degrees F - Correct answer-Minimum wash water temperature in a hospital
laundry is
1970 - Correct answer-Lead poisoning is commonly associated with children living in
homes built before
Owner and occupant jointly - Correct answer-In the APHA-PHS Recommended Housing
Maintenance and Occupancy Ordinance, the responsibility of storing and disposing of
all rubbish is assigned to the
Eight - Correct answer-It is recommended that a minimum of one toilet be provided for
each ______ beds in a hospital or nursing home.
Fit the expected number of swimmers - Correct answer-The pool must be designed to
(blank)
Schistosomiasis - Correct answer-"Swimmers itch" is also known as
10 feet - Correct answer-The minimum recommended depth of water under a 1 meter
board (1 meter high) is
Iodine - Correct answer-Chemicals that have been used for pool disinfection include
chlorine, chlorinated cyanurates, bromine and
Sodium carbonate - Correct answer-To raise the pH, add
Regardless of bathing water quality - Correct answer-Some studies indicate that
swimmers have a higher over-all illness rate than do non-swimmers
, 7.5 and 7.6 - Correct answer-A pH between _____ and _____ is optimal PH control for
eye irritation, but is not optimal for chlorine effectiveness.
Travel trailer - Correct answer-A vehicle built on a chassis and having a body of not
more than 8-feet wide and 32-feet long designed for travel, recreation, and vacation use
is
Every 20 ft. - Correct answer-In large pools with outlets more than 5 feet from the end
wall, pool inlets should be located
Alum - Correct answer-A chemical commonly used to improve water clarity is
Is 62% molecular at a pH of 7.2 - Correct answer-The molecular state of hypochlorous
acid is the desired product from chlorination of pool waters. This product
Prevent loss of disinfectant - Correct answer-Pool inlets should be located a minimum of
10 inches to 15 inches below the water line to
Raise alkalinity - Correct answer-The addition of sodium bicarbonate is usually used to
6-8 hours - Correct answer-A pool filtration system should filter the entire volume of
water every ______.
1.0 to 3.0 mg/l - Correct answer-An operating free chlorine residual of ______ is usually
required in practice.
2 feet - Correct answer-The water depth should clearly be marked on the pool perimeter
for every ______ of depth change
100% available - Correct answer-Gas chlorine is considered
15 gpm/ft2 - Correct answer-The backwash rate for both conventional, rapid and high
rate sand filters is
60% - Correct answer-The gutters or skimmers receive a minimum of ______ of the
total pool water due to the large quantity of organisms and materials which typically
float.
HOCL - Correct answer-Primary product when chlorine is added to water is (blank)
1 to 2 hours - Correct answer-Water in wading pools should be completely recirculated
every
Add acid to water - Correct answer-To mix acid and water, always
