ne
sh
ne
REHS exam la
tz
1. A factor or agent which increases the risk of cancer is known as a
sh
a. teratogen
Sp
b. mutagen
c. carcinogen
ne
la
d. fomite
carcinogen
sh
Sp
2. The four major causes of death among all age groups of Americans include all of the
ne
following
except.
la
a. homicide
tz
b. accidents
sh
Sp
c. malignant neoplasms
ne
d. heart disease
homicide
la
3. In recent years, the largest number of rabies cases were associated with
sh
a. skunks
Sp
b. bats
ne
c. dogs
la
d. raccons.
tz
skunks
sh
4. Asbestosis is caused by fine silicate fibers retained in the
Sp
a. kidneys
ne
b. lungs
la
c. colon
d. abdomen
sh
lungs
Sp
ne
5. An illness due to a specific infectious agent or its toxic product which is transmitted
from a
la
reservoir to a susceptible host either directly or indirectly is called
tz
a. an infectious disease sh
Sp
b. a communicable disease
ne
c. a genetic disease
d. a noncommunicable disease
la
a communicable disease
sh
6. Rocky mountain spotted fever is spread by
Sp
a. flies
ne
b. spiders
c. cockroaches
a
tz
d. ticks
l
sh
ticks
Sp
7. Mycotoxins are poisonous chemicals produced by
ne
a. bacteria
la
b. vertebrates
sh
Sp
la
Sp
, ne
sh
c. viruses
ne
d. fungi la
fungi
tz
8. The study of the occurrence, frequency, and distribution of disease is
sh
a. entomology
Sp
b. biology
c. endocrinology
ne
la
d. epidemiology
epidemiology
sh
Sp
9. Which of the following organisms are most resistant to unfavorable environmental
ne
conditions and indicate
past or possibly intermittent pollution?
la
a. fecal streptococci
tz
b. escherichia coli
sh
Sp
c. aerobacter aerogenes
ne
d. clostridium sporulates
clostridium sporulates
la
10. Engineering controls are
sh
a. controls that isolate or remove hazards from the work place
Sp
b. less effective than good training
ne
c. the last option that should be considered
la
d. less effective than personal protection processes
tz
controls that isolate or remove hazards from the workplace
sh
11. Which of the following is not considered a satisfactory solution to the problem of
Sp
chemical contamination in
ne
Well systems?
la
a. abandoning the well
b. boiling the water
sh
c. building a new, properly constructed, drilled well
Sp
ne
boiling the water
12. Which of the following chemicals is most widely used to destroy microorganisms?
la
a. chlorine
tz
b. copper sulfate sh
Sp
c. chloramine
ne
d. hydrogen sulfate
chlorine
la
00:0201:11
sh
13. Which of the following is not a practical method for removal of cadmium?
Sp
a. ion exchange
ne
b. lime softening
a
c. reverse osmosis
tz
d. iron coagulation
l
sh
Sp
reverse osmosis
ne
14. Which of the following is not a commonly accepted method of device to prevent
backsiphonage?
la
a. vacuum breakers
sh
Sp
la
Sp
, ne
sh
b. cross-connections
ne
c. air gap separation la
d. back pressure units
tz
cross-connections
sh
15. This substance is the first product of the decomposition of organic matter. Its
Sp
presence in water usually
ne
Indicates "fresh pollution" of sanitary significance. What is it?
la
a. ammonia
b. sugar
sh
Sp
c. carbon dioxide
ne
d. hydrogen sulfide
ammonia
la
16. One of the most common reasons for the contamination of wells drilled through
tz
rock, clay, or hardpan is
sh
Sp
a. seepage of pollutants through soil
ne
b. failure to seal well casings properly
c. porosity of the rock
la
d. use of inferior quality well casings
sh
failure to seal well casings properly
Sp
17. In emergencies, small quantities of water can be disinfected by boiling or using
ne
a. aluminum salts
la
b. tincture of iodine
tz
c. salt tablets
sh
d. direct exposure to sunlight for 22 hours
Sp
tincture of iodine
ne
18. Back flow of nonpotable materials into the potable water system may occur by
la
a. back pressure
b. backsiphonage
sh
c. vacuum in the volume
Sp
ne
d. a and b above
a and b above
la
19. Which of the following statements should not be a consideration in locating a
tz
groundwater supply? sh
Sp
a. the probable travel of pollution through the ground
ne
b. the well construction practices and standards
c. the sanitary seal provided at the point where the pump lines pass out of the casing
la
d. the distance that the water will need to travel
sh
the distance that the water will need to travel
Sp
20. It is known that some common pathogenic organisms found in wastewater will
ne
survive more than ____
of harsh temperature extremes
a
tz
a. 2 months
l
sh
b. 5 months
Sp
c. 2 years
ne
d. 5 years
la
2 years
sh
Sp
la
Sp
, ne
sh
21. A storm sewer is used to
ne
a. remove rain or other standing surface water
la
b. remove sewage and storm water
tz
c. remove household water waste and gutter drain water
sh
d. remove non-toxic, non-hazardous wastewater
Sp
remove rain or other standing surface water
ne
22. Stream pollution is sometimes apparent by
la
a. increased levels of available oxygen in the water
b. a zone of degradation
sh
Sp
c. large numbers of crayfish and cristivomer species
ne
d. large numbers of small fish
a zone of degradation
la
23. If the septic tank will also have a garbage disposal unit feeding into it
tz
sh
Sp
a. the size of the tank would be increased by 50 percent
ne
b. the tank should have an agiator
c. the tank should not be equipped with a gas baffle
la
d. the tank should not be constructed with precast concrete
sh
the size of the tank would be increased by 50 percent
Sp
24. How often should a septic tank for a private home be serviced?
ne
la
a. every year
tz
b. every 5 to 10 years
sh
c. every 3 to 5 years
Sp
d. every 10 years
ne
every 3 to 5 years
la
25. Plants absorb certain constituents of wastewater, using wastewater for irrigation of
consumable plant products
sh
may present a health hazard to humans if the water contains
Sp
ne
a. nitrates
la
b. iron
tz
c. cadmium sh
Sp
d. chlorides
ne
cadmium
26. A measure of the relativity constant rate at which clear water, maintained at a
la
relatively constant depth, will
sh
seep out of a standard size test hole that has been previously saturated is the
Sp
a. hydraulic conductivity
ne
b. soil permeability test
c. soil percolation test
a
tz
d. Baird-Parker saturation test
l
sh
soil percolation test
Sp
27. The ability of a soil to absorb and allow water and air to pass through is related to all
ne
of the following except
la
a. chemical composition
sh
Sp
la
Sp
sh
ne
REHS exam la
tz
1. A factor or agent which increases the risk of cancer is known as a
sh
a. teratogen
Sp
b. mutagen
c. carcinogen
ne
la
d. fomite
carcinogen
sh
Sp
2. The four major causes of death among all age groups of Americans include all of the
ne
following
except.
la
a. homicide
tz
b. accidents
sh
Sp
c. malignant neoplasms
ne
d. heart disease
homicide
la
3. In recent years, the largest number of rabies cases were associated with
sh
a. skunks
Sp
b. bats
ne
c. dogs
la
d. raccons.
tz
skunks
sh
4. Asbestosis is caused by fine silicate fibers retained in the
Sp
a. kidneys
ne
b. lungs
la
c. colon
d. abdomen
sh
lungs
Sp
ne
5. An illness due to a specific infectious agent or its toxic product which is transmitted
from a
la
reservoir to a susceptible host either directly or indirectly is called
tz
a. an infectious disease sh
Sp
b. a communicable disease
ne
c. a genetic disease
d. a noncommunicable disease
la
a communicable disease
sh
6. Rocky mountain spotted fever is spread by
Sp
a. flies
ne
b. spiders
c. cockroaches
a
tz
d. ticks
l
sh
ticks
Sp
7. Mycotoxins are poisonous chemicals produced by
ne
a. bacteria
la
b. vertebrates
sh
Sp
la
Sp
, ne
sh
c. viruses
ne
d. fungi la
fungi
tz
8. The study of the occurrence, frequency, and distribution of disease is
sh
a. entomology
Sp
b. biology
c. endocrinology
ne
la
d. epidemiology
epidemiology
sh
Sp
9. Which of the following organisms are most resistant to unfavorable environmental
ne
conditions and indicate
past or possibly intermittent pollution?
la
a. fecal streptococci
tz
b. escherichia coli
sh
Sp
c. aerobacter aerogenes
ne
d. clostridium sporulates
clostridium sporulates
la
10. Engineering controls are
sh
a. controls that isolate or remove hazards from the work place
Sp
b. less effective than good training
ne
c. the last option that should be considered
la
d. less effective than personal protection processes
tz
controls that isolate or remove hazards from the workplace
sh
11. Which of the following is not considered a satisfactory solution to the problem of
Sp
chemical contamination in
ne
Well systems?
la
a. abandoning the well
b. boiling the water
sh
c. building a new, properly constructed, drilled well
Sp
ne
boiling the water
12. Which of the following chemicals is most widely used to destroy microorganisms?
la
a. chlorine
tz
b. copper sulfate sh
Sp
c. chloramine
ne
d. hydrogen sulfate
chlorine
la
00:0201:11
sh
13. Which of the following is not a practical method for removal of cadmium?
Sp
a. ion exchange
ne
b. lime softening
a
c. reverse osmosis
tz
d. iron coagulation
l
sh
Sp
reverse osmosis
ne
14. Which of the following is not a commonly accepted method of device to prevent
backsiphonage?
la
a. vacuum breakers
sh
Sp
la
Sp
, ne
sh
b. cross-connections
ne
c. air gap separation la
d. back pressure units
tz
cross-connections
sh
15. This substance is the first product of the decomposition of organic matter. Its
Sp
presence in water usually
ne
Indicates "fresh pollution" of sanitary significance. What is it?
la
a. ammonia
b. sugar
sh
Sp
c. carbon dioxide
ne
d. hydrogen sulfide
ammonia
la
16. One of the most common reasons for the contamination of wells drilled through
tz
rock, clay, or hardpan is
sh
Sp
a. seepage of pollutants through soil
ne
b. failure to seal well casings properly
c. porosity of the rock
la
d. use of inferior quality well casings
sh
failure to seal well casings properly
Sp
17. In emergencies, small quantities of water can be disinfected by boiling or using
ne
a. aluminum salts
la
b. tincture of iodine
tz
c. salt tablets
sh
d. direct exposure to sunlight for 22 hours
Sp
tincture of iodine
ne
18. Back flow of nonpotable materials into the potable water system may occur by
la
a. back pressure
b. backsiphonage
sh
c. vacuum in the volume
Sp
ne
d. a and b above
a and b above
la
19. Which of the following statements should not be a consideration in locating a
tz
groundwater supply? sh
Sp
a. the probable travel of pollution through the ground
ne
b. the well construction practices and standards
c. the sanitary seal provided at the point where the pump lines pass out of the casing
la
d. the distance that the water will need to travel
sh
the distance that the water will need to travel
Sp
20. It is known that some common pathogenic organisms found in wastewater will
ne
survive more than ____
of harsh temperature extremes
a
tz
a. 2 months
l
sh
b. 5 months
Sp
c. 2 years
ne
d. 5 years
la
2 years
sh
Sp
la
Sp
, ne
sh
21. A storm sewer is used to
ne
a. remove rain or other standing surface water
la
b. remove sewage and storm water
tz
c. remove household water waste and gutter drain water
sh
d. remove non-toxic, non-hazardous wastewater
Sp
remove rain or other standing surface water
ne
22. Stream pollution is sometimes apparent by
la
a. increased levels of available oxygen in the water
b. a zone of degradation
sh
Sp
c. large numbers of crayfish and cristivomer species
ne
d. large numbers of small fish
a zone of degradation
la
23. If the septic tank will also have a garbage disposal unit feeding into it
tz
sh
Sp
a. the size of the tank would be increased by 50 percent
ne
b. the tank should have an agiator
c. the tank should not be equipped with a gas baffle
la
d. the tank should not be constructed with precast concrete
sh
the size of the tank would be increased by 50 percent
Sp
24. How often should a septic tank for a private home be serviced?
ne
la
a. every year
tz
b. every 5 to 10 years
sh
c. every 3 to 5 years
Sp
d. every 10 years
ne
every 3 to 5 years
la
25. Plants absorb certain constituents of wastewater, using wastewater for irrigation of
consumable plant products
sh
may present a health hazard to humans if the water contains
Sp
ne
a. nitrates
la
b. iron
tz
c. cadmium sh
Sp
d. chlorides
ne
cadmium
26. A measure of the relativity constant rate at which clear water, maintained at a
la
relatively constant depth, will
sh
seep out of a standard size test hole that has been previously saturated is the
Sp
a. hydraulic conductivity
ne
b. soil permeability test
c. soil percolation test
a
tz
d. Baird-Parker saturation test
l
sh
soil percolation test
Sp
27. The ability of a soil to absorb and allow water and air to pass through is related to all
ne
of the following except
la
a. chemical composition
sh
Sp
la
Sp
