REHS EXAM BANK / 200+ QUESTIONS AND VERIFIED ANSWERS 2023/2024 / GRADED A+ 100% CORRECT. 2 / 35 1. 1. A factor or agent which increases the risk of cancer is known as a a. teratogen b. mutagen c. carcinogen d. fomite: ANSW* carcinogen 2. The four major causes of death among all age groups of Americ...
REHS EXAM BANK / 200+ QUESTIONS AND
VERIFIED ANSWERS 2023/2024 / GRADED A+ 100%
CORRECT
,REHS EXAM BANK / 200+ QUESTIONS AND VERIFIED
ANSWERS 2023/2024 / GRADED A+ 100% CORRECT
1. A factor or agent which increases the risk of cancer is known as a
a. teratogen
b. mutagen
c. carcinogen
d. fomite
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
homicide
3. In recent years, the largest number of rabies cases were associated with
a. skunks
b. bats
c. dogs
d. raccons.
skunks
4. Asbestosis is caused by fine silicate fibers retained in the
a. kidneys
b. lungs
c. colon
d. abdomen
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
a communicable disease
6. Rocky mountain spotted fever is spread by
a. flies
b. spiders
c. cockroaches
d. ticks
ticks
7. Mycotoxins are poisonous chemicals produced by
a. bacteria
b. vertebrates
,REHS EXAM BANK / 200+ QUESTIONS AND VERIFIED
ANSWERS 2023/2024 / GRADED A+ 100% CORRECT
c. viruses
d. fungi
fungi
8. The study of the occurrence, frequency, and distribution of disease is
a. entomology
b. biology
c. endocrinology
d. epidemiology
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
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
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
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
chlorine
00:0201:11
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
reverse osmosis
14. Which of the following is not a commonly accepted method of device to prevent
backsiphonage?
a. vacuum breakers
, REHS EXAM BANK / 200+ QUESTIONS AND VERIFIED
ANSWERS 2023/2024 / GRADED A+ 100% CORRECT
b. cross-connections
c. air gap separation
d. back pressure units
cross-connections
15. This substance is the first product of the decomposition of organic matter. Its
presence in water usually
Indicates "fresh pollution" of sanitary significance. What is it?
a. ammonia
b. sugar
c. carbon dioxide
d. hydrogen sulfide
ammonia
16. One of the most common reasons for the contamination of wells drilled through
rock, clay, or hardpan is
a. seepage of pollutants through soil
b. failure to seal well casings properly
c. porosity of the rock
d. use of inferior quality well casings
failure to seal well casings properly
17. In emergencies, small quantities of water can be disinfected by boiling or using
a. aluminum salts
b. tincture of iodine
c. salt tablets
d. direct exposure to sunlight for 22 hours
tincture of iodine
18. Back flow of nonpotable materials into the potable water system may occur by
a. back pressure
b. backsiphonage
c. vacuum in the volume
d. a and b above
a and b above
19. Which of the following statements should not be a consideration in locating a
groundwater supply?
a. the probable travel of pollution through the ground
b. the well construction practices and standards
c. the sanitary seal provided at the point where the pump lines pass out of the casing
d. the distance that the water will need to travel
the distance that the water will need to travel
20. It is known that some common pathogenic organisms found in wastewater will
survive more than
of harsh temperature extremes
a. 2 months
b. 5 months
c. 2 years
d. 5 years
2 years
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller MasterGrade. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $10.98. You're not tied to anything after your purchase.
