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Environmental Health
Midterms Exam (Qns & Ans)
2025
1. Which of the following is the most significant source of
indoor air pollution in developing countries?
- A. Industrial emissions
- B. Vehicle exhaust
- C. Biomass fuel combustion
- D. Pesticide use
- ANS: C. Biomass fuel combustion
©2024/2025
, - Rationale: Biomass fuel combustion, such as burning wood,
charcoal, and animal dung, is a major source of indoor air
pollution in developing countries.
2. What is the primary health effect of long-term exposure to
radon gas?
- A. Asthma
- B. Lung cancer
- C. Skin irritation
- D. Cardiovascular disease
- ANS: B. Lung cancer
- Rationale: Radon gas is a radioactive substance that can
accumulate indoors and is a leading cause of lung cancer after
smoking.
3. Which of the following is a key component of the Clean
Water Act?
- A. Regulating air quality standards
- B. Controlling hazardous waste disposal
- C. Establishing water quality standards
- D. Managing pesticide use
- ANS: C. Establishing water quality standards
©2024/2025
, - Rationale: The Clean Water Act focuses on maintaining and
restoring the quality of the nation's waters by setting water quality
standards.
### Fill-in-the-Blank Questions
4. The primary intervention for preventing lead poisoning in
children is __________.
- ANS: removing lead-based paint
- Rationale: Removing lead-based paint from homes and
environments is crucial to prevent lead poisoning in children.
5. In environmental health, the term __________ refers to the
study of the distribution and determinants of health-related states
or events in specified populations.
- ANS: epidemiology
- Rationale: Epidemiology is the study of how health-related
states or events are distributed and determined in populations.
### True/False Questions
6. True or False: Asbestos exposure is primarily associated with
the development of mesothelioma.
©2024/2025
, - ANS: True
- Rationale: Asbestos exposure is a well-known risk factor
for mesothelioma, a type of cancer affecting the lining of the
lungs and other organs.
7. True or False: Pesticides have no impact on human health.
- ANS: False
- Rationale: Pesticides can have significant health impacts,
including acute poisoning and long-term effects such as cancer
and neurological disorders.
### Multiple Response Questions
8. Which of the following are common sources of mercury
exposure? (Select all that apply)
- A. Fish consumption
- B. Dental amalgams
- C. Household cleaning products
- D. Industrial emissions
- ANS: A. Fish consumption, B. Dental amalgams, D.
Industrial emissions
- Rationale: Mercury exposure can occur through fish
consumption, dental amalgams, and industrial emissions.
©2024/2025
Environmental Health
Midterms Exam (Qns & Ans)
2025
1. Which of the following is the most significant source of
indoor air pollution in developing countries?
- A. Industrial emissions
- B. Vehicle exhaust
- C. Biomass fuel combustion
- D. Pesticide use
- ANS: C. Biomass fuel combustion
©2024/2025
, - Rationale: Biomass fuel combustion, such as burning wood,
charcoal, and animal dung, is a major source of indoor air
pollution in developing countries.
2. What is the primary health effect of long-term exposure to
radon gas?
- A. Asthma
- B. Lung cancer
- C. Skin irritation
- D. Cardiovascular disease
- ANS: B. Lung cancer
- Rationale: Radon gas is a radioactive substance that can
accumulate indoors and is a leading cause of lung cancer after
smoking.
3. Which of the following is a key component of the Clean
Water Act?
- A. Regulating air quality standards
- B. Controlling hazardous waste disposal
- C. Establishing water quality standards
- D. Managing pesticide use
- ANS: C. Establishing water quality standards
©2024/2025
, - Rationale: The Clean Water Act focuses on maintaining and
restoring the quality of the nation's waters by setting water quality
standards.
### Fill-in-the-Blank Questions
4. The primary intervention for preventing lead poisoning in
children is __________.
- ANS: removing lead-based paint
- Rationale: Removing lead-based paint from homes and
environments is crucial to prevent lead poisoning in children.
5. In environmental health, the term __________ refers to the
study of the distribution and determinants of health-related states
or events in specified populations.
- ANS: epidemiology
- Rationale: Epidemiology is the study of how health-related
states or events are distributed and determined in populations.
### True/False Questions
6. True or False: Asbestos exposure is primarily associated with
the development of mesothelioma.
©2024/2025
, - ANS: True
- Rationale: Asbestos exposure is a well-known risk factor
for mesothelioma, a type of cancer affecting the lining of the
lungs and other organs.
7. True or False: Pesticides have no impact on human health.
- ANS: False
- Rationale: Pesticides can have significant health impacts,
including acute poisoning and long-term effects such as cancer
and neurological disorders.
### Multiple Response Questions
8. Which of the following are common sources of mercury
exposure? (Select all that apply)
- A. Fish consumption
- B. Dental amalgams
- C. Household cleaning products
- D. Industrial emissions
- ANS: A. Fish consumption, B. Dental amalgams, D.
Industrial emissions
- Rationale: Mercury exposure can occur through fish
consumption, dental amalgams, and industrial emissions.
©2024/2025
