REHS Exam
Questions and
Complete Solutions
Graded A+
Denning [Date] [Course title]
,1. A factor or agent which increases the risk of cancer is known as a
a. teratogen
b. mutagen
c. carcinogen
d. fomite - 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 - Answer: homicide
3. In recent years, the largest number of rabies cases were associated with
a. skunks
b. bats
c. dogs
d. raccons. - Answer: skunks
4. Asbestosis is caused by fine silicate fibers retained in the
a. kidneys
b. lungs
c. colon
d. abdomen - 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 - Answer: a communicable disease
6. Rocky mountain spotted fever is spread by
a. flies
b. spiders
c. cockroaches
d. ticks - Answer: ticks
7. Mycotoxins are poisonous chemicals produced by
a. bacteria
b. vertebrates
c. viruses
d. fungi - Answer: fungi
8. The study of the occurrence, frequency, and distribution of disease is
a. entomology
b. biology
c. endocrinology
d. epidemiology - Answer: epidemiology
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 - 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 - 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
b. boiling the water
c. building a new, properly constructed, drilled well - Answer: boiling the water
12. Which of the following chemicals is most widely used to destroy microorganisms?
a. chlorine
b. copper sulfate
c. chloramine
d. hydrogen sulfate - 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 - 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
Questions and
Complete Solutions
Graded A+
Denning [Date] [Course title]
,1. A factor or agent which increases the risk of cancer is known as a
a. teratogen
b. mutagen
c. carcinogen
d. fomite - 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 - Answer: homicide
3. In recent years, the largest number of rabies cases were associated with
a. skunks
b. bats
c. dogs
d. raccons. - Answer: skunks
4. Asbestosis is caused by fine silicate fibers retained in the
a. kidneys
b. lungs
c. colon
d. abdomen - 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 - Answer: a communicable disease
6. Rocky mountain spotted fever is spread by
a. flies
b. spiders
c. cockroaches
d. ticks - Answer: ticks
7. Mycotoxins are poisonous chemicals produced by
a. bacteria
b. vertebrates
c. viruses
d. fungi - Answer: fungi
8. The study of the occurrence, frequency, and distribution of disease is
a. entomology
b. biology
c. endocrinology
d. epidemiology - Answer: epidemiology
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 - 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 - 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
b. boiling the water
c. building a new, properly constructed, drilled well - Answer: boiling the water
12. Which of the following chemicals is most widely used to destroy microorganisms?
a. chlorine
b. copper sulfate
c. chloramine
d. hydrogen sulfate - 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 - 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
