MPH COMPREHENSIVE EXAM PREPARATION
MPH COMPREHENSIVE EXAM PREPARATION FOR 2025/2026
WITH COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |BRAND NEW VERSION!!
An estimated 4,000 toxic substances have been isolated in cigarette smoke. Some
of these substances are clearly termed toxic and others as carcinogens. Which of
the following substances in cigarette smoke have been categorized as
carcinogenic?
a. Benzo (a) pyrene
b. N-Nitrosodimethylamine
c. Cadium
d. All of the above
e. A and c only
D. All of the above
The primary method used to predict movement of substances in environmental
media is:
a. Actual measurements of air and water pollutants at various places in the
environment
b. Exposure models
c. Tagging pollutants with radioactive tracers and measuring the radioactivity at
various times and locations within the environmental media
d. None of these
B. Exposure models
The clinical features of CO poisoning are highly variable, and symptoms vary from
mild to very severe. As an environmental health specialist for the county's health
department, you are at a scene with individuals exposed to CO. Which of the
following manifestations would you expect to observe?
a. Dizziness, fatigue dyspnea
b. Vomiting
c. Irritability
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, MPH COMPREHENSIVE EXAM PREPARATION
d. Unconsciousness/coma
e. All of the above
E. All of the above
1. Toxic substances are often described by their abilities to cause adverse or
unwanted health effects. Which of the following statements describes risk?
A. It is the capacity of a substance to cause an adverse effect in a specific organ or
organ system
B. It reflects the probability that a hazard will occur under specific exposure
conditions
c. It involves weighting of policy alternatives and selection of the most appropriate
actions
d. It results in a statistically derived probability that an adverse effect will occur at
a defines exposure level
e. None of these
B. It reflects the probability that a hazard will occur under specific exposure
conditions
D. It results in a statistically derived probability that an adverse effect will occur at
a defines exposure level
Although pesticides are used specifically to kill pests, many of them have
environmental impacts as well as toxic effects on humans. The environmental
impact of their use includes resistance development, killing of beneficial species,
and environmental contaminant. Which of the following is (are) the result(s) of
unintended contamination by pesticides?
a. Direct killing of organisms exposed to chemicals
b. Indirect killing via depletion of food or habitat
c. Groundwater contamination
d. Indirect contamination via food chains
e. All of the above
E. All of the above
2|Page
, MPH COMPREHENSIVE EXAM PREPARATION
CO intoxication or poisoning carries lethal consequences. What are the primary
prevention modalities that may help reduce the poisoning and mortality
associated with CO?
a. Limiting exposure to known CO sources
b. Proper installation, maintenance and use of combustion appliances
c. Both of the above
d. None of the above
c. Both of the above
The primary toxic effect that determines the type of procedure to be used in
conducting a risk assessment is:
a. Lethality in laboratory animals
b. Evidence that the chemical is noncarcinogenic
c. The ability of the chemical to cause eye irritation
d. Evidence that the chemical is carcinogenic
e. None of the above
d. Evidence that the chemical is carcinogenic
The process in which the does-response assessment and exposure assessments
are integrated to predict risk in specific populations is known as which of the
following?
a. Risk management
b. Hazard identification
c. Risk characterization
d. Risk modification
e. Risk quantification
c. Risk characterization
The following are elements of a good surveillance system:
-Simplicity
-flexibility
-data quality
-acceptability
3|Page
MPH COMPREHENSIVE EXAM PREPARATION FOR 2025/2026
WITH COMPLETE QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |BRAND NEW VERSION!!
An estimated 4,000 toxic substances have been isolated in cigarette smoke. Some
of these substances are clearly termed toxic and others as carcinogens. Which of
the following substances in cigarette smoke have been categorized as
carcinogenic?
a. Benzo (a) pyrene
b. N-Nitrosodimethylamine
c. Cadium
d. All of the above
e. A and c only
D. All of the above
The primary method used to predict movement of substances in environmental
media is:
a. Actual measurements of air and water pollutants at various places in the
environment
b. Exposure models
c. Tagging pollutants with radioactive tracers and measuring the radioactivity at
various times and locations within the environmental media
d. None of these
B. Exposure models
The clinical features of CO poisoning are highly variable, and symptoms vary from
mild to very severe. As an environmental health specialist for the county's health
department, you are at a scene with individuals exposed to CO. Which of the
following manifestations would you expect to observe?
a. Dizziness, fatigue dyspnea
b. Vomiting
c. Irritability
1|Page
, MPH COMPREHENSIVE EXAM PREPARATION
d. Unconsciousness/coma
e. All of the above
E. All of the above
1. Toxic substances are often described by their abilities to cause adverse or
unwanted health effects. Which of the following statements describes risk?
A. It is the capacity of a substance to cause an adverse effect in a specific organ or
organ system
B. It reflects the probability that a hazard will occur under specific exposure
conditions
c. It involves weighting of policy alternatives and selection of the most appropriate
actions
d. It results in a statistically derived probability that an adverse effect will occur at
a defines exposure level
e. None of these
B. It reflects the probability that a hazard will occur under specific exposure
conditions
D. It results in a statistically derived probability that an adverse effect will occur at
a defines exposure level
Although pesticides are used specifically to kill pests, many of them have
environmental impacts as well as toxic effects on humans. The environmental
impact of their use includes resistance development, killing of beneficial species,
and environmental contaminant. Which of the following is (are) the result(s) of
unintended contamination by pesticides?
a. Direct killing of organisms exposed to chemicals
b. Indirect killing via depletion of food or habitat
c. Groundwater contamination
d. Indirect contamination via food chains
e. All of the above
E. All of the above
2|Page
, MPH COMPREHENSIVE EXAM PREPARATION
CO intoxication or poisoning carries lethal consequences. What are the primary
prevention modalities that may help reduce the poisoning and mortality
associated with CO?
a. Limiting exposure to known CO sources
b. Proper installation, maintenance and use of combustion appliances
c. Both of the above
d. None of the above
c. Both of the above
The primary toxic effect that determines the type of procedure to be used in
conducting a risk assessment is:
a. Lethality in laboratory animals
b. Evidence that the chemical is noncarcinogenic
c. The ability of the chemical to cause eye irritation
d. Evidence that the chemical is carcinogenic
e. None of the above
d. Evidence that the chemical is carcinogenic
The process in which the does-response assessment and exposure assessments
are integrated to predict risk in specific populations is known as which of the
following?
a. Risk management
b. Hazard identification
c. Risk characterization
d. Risk modification
e. Risk quantification
c. Risk characterization
The following are elements of a good surveillance system:
-Simplicity
-flexibility
-data quality
-acceptability
3|Page
