Texas Certified Environmental Scientist
Exam Practice Questions And Correct
Answers (Verified Answers) Plus
Rationales |2026 Q&A | Instant
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1. What is the primary federal law governing water pollution in the
United States?
A. Safe Drinking Water Act
B. Clean Water Act
C. Resource Conservation and Recovery Act
D. Toxic Substances Control Act
The Clean Water Act (CWA) regulates discharges of pollutants into waters
and sets quality standards for surface waters.
2. Which agency is primarily responsible for enforcing environmental
regulations in Texas?
A. EPA
B. Texas Commission on Environmental Quality (TCEQ)
C. Department of Energy
D. OSHA
,TCEQ is the state agency responsible for enforcing Texas environmental
laws and regulations.
3. Which gas is the primary contributor to the greenhouse effect?
A. Nitrogen
B. Oxygen
C. Carbon dioxide
D. Methane
Carbon dioxide is the most abundant greenhouse gas produced by human
activities like fossil fuel combustion.
4. What does the acronym RCRA stand for?
A. Regional Conservation and Recovery Association
B. Resource Conservation and Recovery Act
C. Renewable Chemical Research Agreement
D. Radiation Control and Regulation Act
RCRA governs the disposal of solid and hazardous waste.
5. What is the main function of a Phase I Environmental Site
Assessment?
A. Soil sampling
B. Identify potential or existing environmental contamination liabilities
C. Groundwater modeling
D. Air quality testing
Phase I ESAs assess the potential for contamination before property
transactions.
6. Which of the following is considered a hazardous air pollutant under
the Clean Air Act?
, A. Carbon monoxide
B. Carbon dioxide
C. Benzene
D. Water vapor
Benzene is one of the 187 hazardous air pollutants listed under the Clean
Air Act.
7. A brownfield is best described as:
A. Agricultural land
B. Previously used industrial or commercial land with potential
contamination
C. Protected wildlife habitat
D. Land designated for residential development
Brownfields are properties where redevelopment may be complicated by
environmental contamination.
8. The National Environmental Policy Act (NEPA) requires which of the
following?
A. Carbon offsetting
B. Mandatory recycling
C. Environmental impact statements for major federal actions
D. Hazardous waste cleanup
NEPA mandates that federal agencies assess the environmental effects of
their proposed actions.
9. Which federal law focuses on chemical safety and reporting?
A. Clean Water Act
B. Toxic Substances Control Act (TSCA)
Exam Practice Questions And Correct
Answers (Verified Answers) Plus
Rationales |2026 Q&A | Instant
Download Pdf
1. What is the primary federal law governing water pollution in the
United States?
A. Safe Drinking Water Act
B. Clean Water Act
C. Resource Conservation and Recovery Act
D. Toxic Substances Control Act
The Clean Water Act (CWA) regulates discharges of pollutants into waters
and sets quality standards for surface waters.
2. Which agency is primarily responsible for enforcing environmental
regulations in Texas?
A. EPA
B. Texas Commission on Environmental Quality (TCEQ)
C. Department of Energy
D. OSHA
,TCEQ is the state agency responsible for enforcing Texas environmental
laws and regulations.
3. Which gas is the primary contributor to the greenhouse effect?
A. Nitrogen
B. Oxygen
C. Carbon dioxide
D. Methane
Carbon dioxide is the most abundant greenhouse gas produced by human
activities like fossil fuel combustion.
4. What does the acronym RCRA stand for?
A. Regional Conservation and Recovery Association
B. Resource Conservation and Recovery Act
C. Renewable Chemical Research Agreement
D. Radiation Control and Regulation Act
RCRA governs the disposal of solid and hazardous waste.
5. What is the main function of a Phase I Environmental Site
Assessment?
A. Soil sampling
B. Identify potential or existing environmental contamination liabilities
C. Groundwater modeling
D. Air quality testing
Phase I ESAs assess the potential for contamination before property
transactions.
6. Which of the following is considered a hazardous air pollutant under
the Clean Air Act?
, A. Carbon monoxide
B. Carbon dioxide
C. Benzene
D. Water vapor
Benzene is one of the 187 hazardous air pollutants listed under the Clean
Air Act.
7. A brownfield is best described as:
A. Agricultural land
B. Previously used industrial or commercial land with potential
contamination
C. Protected wildlife habitat
D. Land designated for residential development
Brownfields are properties where redevelopment may be complicated by
environmental contamination.
8. The National Environmental Policy Act (NEPA) requires which of the
following?
A. Carbon offsetting
B. Mandatory recycling
C. Environmental impact statements for major federal actions
D. Hazardous waste cleanup
NEPA mandates that federal agencies assess the environmental effects of
their proposed actions.
9. Which federal law focuses on chemical safety and reporting?
A. Clean Water Act
B. Toxic Substances Control Act (TSCA)
