REHS EXAM QUESTIONS AND ANSWERS

REHS EXAM QUESTIONS AND ANSWERS

100% SOLVED (Newest 2025)

• A factor or agent which increases the risk of cancer is

known as a

• teratogen
• mutagen
• carcinogen
• fomite - Correct Answers ✅carcinogen
• The four major causes of death among all age groups of

Americans include all of the following except.

• homicide
• accidents
• malignant neoplasms
• heart disease - Correct Answers ✅homicide
• In recent years, the largest number of rabies cases were

associated with

• skunks
• bats
• dogs
• raccons. - Correct Answers ✅skunks
• Asbestosis is caused by fine silicate fibers retained in the 1 / 4

REHS EXAM QUESTIONS AND ANSWERS

100% SOLVED (Newest 2025)

• kidneys
• lungs
• colon
• abdomen - Correct Answers ✅lungs
• 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

• an infectious disease
• a communicable disease
• a genetic disease
• a noncommunicable disease - Correct Answers ✅a

communicable disease

• Rocky mountain spotted fever is spread by
• flies
• spiders
• cockroaches
• ticks - Correct Answers ✅ticks
• Mycotoxins are poisonous chemicals produced by
• bacteria 2 / 4

REHS EXAM QUESTIONS AND ANSWERS

100% SOLVED (Newest 2025)

• vertebrates
• viruses
• fungi - Correct Answers ✅fungi
• The study of the occurrence, frequency, and distribution of

disease is

• entomology
• biology
• endocrinology
• epidemiology - Correct Answers ✅epidemiology
• Which of the following organisms are most resistant to

unfavorable environmental conditions and indicate past or possibly intermittent pollution?

• fecal streptococci
• escherichia coli
• aerobacter aerogenes
• clostridium sporulates - Correct Answers ✅clostridium

sporulates

• Engineering controls are
• controls that isolate or remove hazards from the work

place

• less effective than good training 3 / 4

REHS EXAM QUESTIONS AND ANSWERS

100% SOLVED (Newest 2025)

• the last option that should be considered
• less effective than personal protection processes -

Correct Answers ✅controls that isolate or remove hazards from the workplace

• Which of the following is not considered a satisfactory

solution to the problem of chemical contamination in Well systems?

• abandoning the well
• boiling the water
• building a new, properly constructed, drilled well - Correct

Answers ✅boiling the water

• Which of the following chemicals is most widely used to

destroy microorganisms?

• chlorine
• copper sulfate
• chloramine
• hydrogen sulfate - Correct Answers ✅chlorine
• Which of the following is not a practical method for

removal of cadmium?

• ion exchange
• lime softening
• / 4