REHS exam 2026 Questions and Answers
1. A factor or agent which increases the risk of cancer is known as a
a. teratogen
b. mutagen
c. carcinogen
d. fomite - Correct answer-carcinogen
2. 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
3. In recent years, the largest number of rabies cases were associated with
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,a. skunks
b. bats
c. dogs
d. raccons. - Correct answer-skunks
4. Asbestosis is caused by fine silicate fibers retained in the
a. kidneys
b. lungs
c. colon
d. abdomen - Correct answer-lungs
5. 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
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,6. Rocky mountain spotted fever is spread by
a. flies
b. spiders
c. cockroaches
d. ticks - Correct answer-ticks
7. Mycotoxins are poisonous chemicals produced by
a. bacteria
b. vertebrates
c. viruses
d. fungi - Correct answer-fungi
8. 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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, 9. 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
10. 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
11. Which of the following is not considered a satisfactory solution to the problem
of chemical contamination in
Well systems?
a. abandoning the well
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1. A factor or agent which increases the risk of cancer is known as a
a. teratogen
b. mutagen
c. carcinogen
d. fomite - Correct answer-carcinogen
2. 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
3. In recent years, the largest number of rabies cases were associated with
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
,a. skunks
b. bats
c. dogs
d. raccons. - Correct answer-skunks
4. Asbestosis is caused by fine silicate fibers retained in the
a. kidneys
b. lungs
c. colon
d. abdomen - Correct answer-lungs
5. 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
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,6. Rocky mountain spotted fever is spread by
a. flies
b. spiders
c. cockroaches
d. ticks - Correct answer-ticks
7. Mycotoxins are poisonous chemicals produced by
a. bacteria
b. vertebrates
c. viruses
d. fungi - Correct answer-fungi
8. The study of the occurrence, frequency, and distribution of disease is
a. entomology
b. biology
c. endocrinology
d. epidemiology - Correct answer-epidemiology
©COPYRIGHT 2025, ALL RIGHTS RESERVED 3
, 9. 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
10. 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
11. Which of the following is not considered a satisfactory solution to the problem
of chemical contamination in
Well systems?
a. abandoning the well
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