REHS EXAM PRACTICE QUESTIONS WITH
VERIFIED ANSWERS LATEST UPGRADE
GRADED A+
1. Rocky mountain spotted fever is spread by
a. flies
b. spiders
c. cockroaches
d. ticks --CORRECT ANSWER--ticks
2. Mycotoxins are poisonous chemicals produced by
a. bacteria
b. vertebrates
c. viruses
d. fungi --CORRECT ANSWER--fungi
3. The study of the occurrence, frequency, and distribution of disease is
a. entomology
b. biology
c. endocrinology
d. epidemiology --CORRECT ANSWER--epidemiology
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,4. Which of the following organisms are most resistant to unfavorable environmental
conditions and indicate
past or possibly intermittent pollution?
a. fecal streptococci
b. escherichia coli
c. aerobacter aerogenes
d. clostridium sporulates --CORRECT ANSWER--clostridium sporulates
5. Engineering controls are
a. controls that isolate or remove hazards from the work place
b. less effective than good training
c. the last option that should be considered
d. less effective than personal protection processes --CORRECT ANSWER--controls that
isolate or remove hazards from the workplace
6. Which of the following is not considered a satisfactory solution to the problem of chemical
contamination in
Well systems?
a. abandoning the well
b. boiling the water
c. building a new, properly constructed, drilled well --CORRECT ANSWER--boiling the
water
7. A factor or agent which increases the risk of cancer is known as a
a. teratogen
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,b. mutagen
c. carcinogen
d. fomite --CORRECT ANSWER--carcinogen
8. The four major causes of death among all age groups of Americans include all of the
following
except.
a. homicide
b. accidents
c. malignant neoplasms
d. heart disease --CORRECT ANSWER--homicide
9. In recent years, the largest number of rabies cases were associated with
a. skunks
b. bats
c. dogs
d. raccons. --CORRECT ANSWER--skunks
10. Asbestosis is caused by fine silicate fibers retained in the
a. kidneys
b. lungs
c. colon
d. abdomen --CORRECT ANSWER--lungs
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, 11. An illness due to a specific infectious agent or its toxic product which is transmitted from
a reservoir to a susceptible host either directly or indirectly is called
a. an infectious disease
b. a communicable disease
c. a genetic disease
d. a noncommunicable disease --CORRECT ANSWER--a communicable disease
12. Which of the following chemicals is most widely used to destroy microorganisms?
a. chlorine
b. copper sulfate
c. chloramine
d. hydrogen sulfate --CORRECT ANSWER--chlorine
13. Which of the following is not a practical method for removal of cadmium?
a. ion exchange
b. lime softening
c. reverse osmosis
d. iron coagulation --CORRECT ANSWER--reverse osmosis
14. Which of the following is not a commonly accepted method of device to prevent
backsiphonage?
a. vacuum breakers
b. cross-connections
c. air gap separation
d. back pressure units --CORRECT ANSWER--cross-connections
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VERIFIED ANSWERS LATEST UPGRADE
GRADED A+
1. Rocky mountain spotted fever is spread by
a. flies
b. spiders
c. cockroaches
d. ticks --CORRECT ANSWER--ticks
2. Mycotoxins are poisonous chemicals produced by
a. bacteria
b. vertebrates
c. viruses
d. fungi --CORRECT ANSWER--fungi
3. The study of the occurrence, frequency, and distribution of disease is
a. entomology
b. biology
c. endocrinology
d. epidemiology --CORRECT ANSWER--epidemiology
Page | 1
,4. Which of the following organisms are most resistant to unfavorable environmental
conditions and indicate
past or possibly intermittent pollution?
a. fecal streptococci
b. escherichia coli
c. aerobacter aerogenes
d. clostridium sporulates --CORRECT ANSWER--clostridium sporulates
5. Engineering controls are
a. controls that isolate or remove hazards from the work place
b. less effective than good training
c. the last option that should be considered
d. less effective than personal protection processes --CORRECT ANSWER--controls that
isolate or remove hazards from the workplace
6. Which of the following is not considered a satisfactory solution to the problem of chemical
contamination in
Well systems?
a. abandoning the well
b. boiling the water
c. building a new, properly constructed, drilled well --CORRECT ANSWER--boiling the
water
7. A factor or agent which increases the risk of cancer is known as a
a. teratogen
Page | 2
,b. mutagen
c. carcinogen
d. fomite --CORRECT ANSWER--carcinogen
8. The four major causes of death among all age groups of Americans include all of the
following
except.
a. homicide
b. accidents
c. malignant neoplasms
d. heart disease --CORRECT ANSWER--homicide
9. In recent years, the largest number of rabies cases were associated with
a. skunks
b. bats
c. dogs
d. raccons. --CORRECT ANSWER--skunks
10. Asbestosis is caused by fine silicate fibers retained in the
a. kidneys
b. lungs
c. colon
d. abdomen --CORRECT ANSWER--lungs
Page | 3
, 11. An illness due to a specific infectious agent or its toxic product which is transmitted from
a reservoir to a susceptible host either directly or indirectly is called
a. an infectious disease
b. a communicable disease
c. a genetic disease
d. a noncommunicable disease --CORRECT ANSWER--a communicable disease
12. Which of the following chemicals is most widely used to destroy microorganisms?
a. chlorine
b. copper sulfate
c. chloramine
d. hydrogen sulfate --CORRECT ANSWER--chlorine
13. Which of the following is not a practical method for removal of cadmium?
a. ion exchange
b. lime softening
c. reverse osmosis
d. iron coagulation --CORRECT ANSWER--reverse osmosis
14. Which of the following is not a commonly accepted method of device to prevent
backsiphonage?
a. vacuum breakers
b. cross-connections
c. air gap separation
d. back pressure units --CORRECT ANSWER--cross-connections
Page | 4
