FLORIDA ENVIRONMENTAL OPERATOR EXAM LEVEL I
PRACTICE QUESTIONS WITH CORRECT ANSWERS
(VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A |
INSTANT DOWNLOAD PDF
1. What is the primary purpose of a water treatment plant?
A. Generate electricity
B. Provide safe drinking water
C. Remove sediment only
D. Store water
Rationale: The main goal of a water treatment plant is to ensure water
is safe for human consumption.
2. Which process is commonly used to remove suspended solids from
water?
A. Chlorination
B. Sedimentation
C. Aeration
D. Fluoridation
Rationale: Sedimentation allows particles to settle out of the water due
to gravity.
3. What is the typical pH range of drinking water?
A. 2–4
B. 5–6
,C. 6.5–8.5
D. 9–11
Rationale: Drinking water is generally maintained between 6.5 and 8.5
to prevent corrosion and maintain palatability.
4. Which chemical is commonly used for disinfection in water
treatment?
A. Fluoride
B. Chlorine
C. Alum
D. Lime
Rationale: Chlorine is widely used to kill pathogenic microorganisms.
5. What is the main purpose of coagulation in water treatment?
A. Disinfect water
B. Remove suspended particles
C. Adjust pH
D. Aerate water
Rationale: Coagulation destabilizes colloidal particles, allowing them to
clump together for removal.
6. What is the function of a clarifier in a water treatment plant?
A. Aerate water
B. Separate solids from water
C. Adjust chemical dosage
D. Measure flow rate
Rationale: Clarifiers allow solids to settle and clarify the water.
, 7. Which parameter indicates the amount of dissolved oxygen in
water?
A. pH
B. Turbidity
C. DO (Dissolved Oxygen)
D. Conductivity
Rationale: Dissolved oxygen is critical for aquatic life and water quality.
8. What is turbidity a measure of?
A. Cloudiness of water
B. Temperature
C. Chlorine content
D. Acidity
Rationale: Turbidity measures how clear water is by detecting
suspended particles.
9. What is the main goal of filtration in water treatment?
A. Remove fine particles
B. Kill bacteria
C. Adjust pH
D. Soften water
Rationale: Filtration removes small particles that sedimentation cannot.
10. Which type of filter media is most commonly used in rapid sand
filters?
A. Charcoal
PRACTICE QUESTIONS WITH CORRECT ANSWERS
(VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A |
INSTANT DOWNLOAD PDF
1. What is the primary purpose of a water treatment plant?
A. Generate electricity
B. Provide safe drinking water
C. Remove sediment only
D. Store water
Rationale: The main goal of a water treatment plant is to ensure water
is safe for human consumption.
2. Which process is commonly used to remove suspended solids from
water?
A. Chlorination
B. Sedimentation
C. Aeration
D. Fluoridation
Rationale: Sedimentation allows particles to settle out of the water due
to gravity.
3. What is the typical pH range of drinking water?
A. 2–4
B. 5–6
,C. 6.5–8.5
D. 9–11
Rationale: Drinking water is generally maintained between 6.5 and 8.5
to prevent corrosion and maintain palatability.
4. Which chemical is commonly used for disinfection in water
treatment?
A. Fluoride
B. Chlorine
C. Alum
D. Lime
Rationale: Chlorine is widely used to kill pathogenic microorganisms.
5. What is the main purpose of coagulation in water treatment?
A. Disinfect water
B. Remove suspended particles
C. Adjust pH
D. Aerate water
Rationale: Coagulation destabilizes colloidal particles, allowing them to
clump together for removal.
6. What is the function of a clarifier in a water treatment plant?
A. Aerate water
B. Separate solids from water
C. Adjust chemical dosage
D. Measure flow rate
Rationale: Clarifiers allow solids to settle and clarify the water.
, 7. Which parameter indicates the amount of dissolved oxygen in
water?
A. pH
B. Turbidity
C. DO (Dissolved Oxygen)
D. Conductivity
Rationale: Dissolved oxygen is critical for aquatic life and water quality.
8. What is turbidity a measure of?
A. Cloudiness of water
B. Temperature
C. Chlorine content
D. Acidity
Rationale: Turbidity measures how clear water is by detecting
suspended particles.
9. What is the main goal of filtration in water treatment?
A. Remove fine particles
B. Kill bacteria
C. Adjust pH
D. Soften water
Rationale: Filtration removes small particles that sedimentation cannot.
10. Which type of filter media is most commonly used in rapid sand
filters?
A. Charcoal
