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IICRC WRT & ASD FINAL EXAM 2025/2026 | WATER DAMAGE
RESTORATION & APPLIED STRUCTURAL DRYING TEST
BANK,100% CORRECT, ALREADY GRADED A+
1. Topic: Water Damage Categories
Water damage is classified based on contamination levels. Which category
of water is considered the least contaminated and generally safe for
human contact?
A. Category 1 – Clean Water
B. Category 2 – Gray Water
C. Category 3 – Black Water
D. Category 4 – Contaminated Water
Answer: A
Rationale: Category 1 water originates from clean sources like broken
supply lines or rainwater and poses minimal risk to humans.
2. Topic: Water Damage Categories
Category 2 water contains some level of contamination that may cause
illness if ingested. Which of the following is an example of Category 2
water?
A. Sewage backup
B. Overflow from washing machines
C. Floodwater from rivers
D. Rainwater from a clean roof
Answer: B
Rationale: Gray water (Category 2) includes water from appliances like
washing machines, dishwashers, or sinks, which may contain chemicals or
microorganisms.
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3. Topic: Water Damage Categories
Category 3 water is highly contaminated and can cause severe illness. Which
source typically represents Category 3 water?
A. Drinking fountain leak
B. Toilet overflow with feces
C. Broken supply line
D. Rainwater collection
Answer: B
Rationale: Black water (Category 3) includes sewage or floodwater from
rivers and poses significant health risks due to pathogens.
4. Topic: Classes of Water Damage
Water damage is also classified based on porosity and absorption of
materials. Which class involves water affecting the entire area, including
walls, ceilings, and flooring, with high evaporation load?
A. Class 1 – Minimal Water
B. Class 2 – Significant Water
C. Class 3 – High Water Saturation
D. Class 4 – Specialty Drying
Answer: C
Rationale: Class 3 affects ceilings, walls, and floors, requiring extensive
drying efforts due to complete saturation.
5. Topic: Classes of Water Damage
Which class of water damage is characterized by materials with low
porosity that require special drying techniques?
A. Class 1
B. Class 2
C. Class 3
D. Class 4
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Answer: D
Rationale: Class 4 damage involves materials like hardwood, concrete, and
plaster, which are densely packed or low-porosity and need specialized
drying methods.
6. Topic: Moisture Measurement
Accurate moisture measurement is critical in water restoration. Which tool is
primarily used to measure moisture content in wood and drywall without
penetration?
A. Thermohygrometer
B. Infrared camera
C. Moisture meter – non-penetrating
D. Psychrometer
Answer: C
Rationale: Non-penetrating moisture meters use electromagnetic signals
to detect moisture levels in materials without damaging surfaces.
7. Topic: Moisture Measurement
Which instrument measures humidity, temperature, and dew point to
assess drying conditions during water restoration?
A. Hygrometer
B. Psychrometer
C. Thermal imager
D. Electrical moisture meter
Answer: B
Rationale: A psychrometer measures relative humidity and temperature,
helping determine the drying potential and evaporation rates.
8. Topic: Applied Structural Drying
Effective drying requires air movement and evaporation control. Which
device is used to accelerate evaporation by circulating warm, dry air
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across wet materials?
A. Dehumidifier
B. Air mover
C. Moisture meter
D. Thermohygrometer
Answer: B
Rationale: Air movers create high-velocity airflow to increase
evaporation from wet surfaces, facilitating structural drying.
9. Topic: Applied Structural Drying
Which type of dehumidifier is best for large-scale commercial water loss
and can remove high moisture from the air efficiently?
A. Refrigerant dehumidifier
B. Desiccant dehumidifier
C. Portable fan
D. Air scrubber
Answer: B
Rationale: Desiccant dehumidifiers are highly efficient in low-
temperature and large-scale environments, capable of removing large
volumes of moisture from the air.
10. Topic: Psychrometry
Psychrometry is the study of air and water vapor interactions. Which
factor is essential for determining the drying process in a water-damaged
structure?
A. Air temperature, relative humidity, and vapor pressure
B. Surface color and texture
C. Water source contamination level
D. Type of cleaning solution used
IICRC WRT & ASD FINAL EXAM 2025/2026 | WATER DAMAGE
RESTORATION & APPLIED STRUCTURAL DRYING TEST
BANK,100% CORRECT, ALREADY GRADED A+
1. Topic: Water Damage Categories
Water damage is classified based on contamination levels. Which category
of water is considered the least contaminated and generally safe for
human contact?
A. Category 1 – Clean Water
B. Category 2 – Gray Water
C. Category 3 – Black Water
D. Category 4 – Contaminated Water
Answer: A
Rationale: Category 1 water originates from clean sources like broken
supply lines or rainwater and poses minimal risk to humans.
2. Topic: Water Damage Categories
Category 2 water contains some level of contamination that may cause
illness if ingested. Which of the following is an example of Category 2
water?
A. Sewage backup
B. Overflow from washing machines
C. Floodwater from rivers
D. Rainwater from a clean roof
Answer: B
Rationale: Gray water (Category 2) includes water from appliances like
washing machines, dishwashers, or sinks, which may contain chemicals or
microorganisms.
,2|Page
3. Topic: Water Damage Categories
Category 3 water is highly contaminated and can cause severe illness. Which
source typically represents Category 3 water?
A. Drinking fountain leak
B. Toilet overflow with feces
C. Broken supply line
D. Rainwater collection
Answer: B
Rationale: Black water (Category 3) includes sewage or floodwater from
rivers and poses significant health risks due to pathogens.
4. Topic: Classes of Water Damage
Water damage is also classified based on porosity and absorption of
materials. Which class involves water affecting the entire area, including
walls, ceilings, and flooring, with high evaporation load?
A. Class 1 – Minimal Water
B. Class 2 – Significant Water
C. Class 3 – High Water Saturation
D. Class 4 – Specialty Drying
Answer: C
Rationale: Class 3 affects ceilings, walls, and floors, requiring extensive
drying efforts due to complete saturation.
5. Topic: Classes of Water Damage
Which class of water damage is characterized by materials with low
porosity that require special drying techniques?
A. Class 1
B. Class 2
C. Class 3
D. Class 4
,3|Page
Answer: D
Rationale: Class 4 damage involves materials like hardwood, concrete, and
plaster, which are densely packed or low-porosity and need specialized
drying methods.
6. Topic: Moisture Measurement
Accurate moisture measurement is critical in water restoration. Which tool is
primarily used to measure moisture content in wood and drywall without
penetration?
A. Thermohygrometer
B. Infrared camera
C. Moisture meter – non-penetrating
D. Psychrometer
Answer: C
Rationale: Non-penetrating moisture meters use electromagnetic signals
to detect moisture levels in materials without damaging surfaces.
7. Topic: Moisture Measurement
Which instrument measures humidity, temperature, and dew point to
assess drying conditions during water restoration?
A. Hygrometer
B. Psychrometer
C. Thermal imager
D. Electrical moisture meter
Answer: B
Rationale: A psychrometer measures relative humidity and temperature,
helping determine the drying potential and evaporation rates.
8. Topic: Applied Structural Drying
Effective drying requires air movement and evaporation control. Which
device is used to accelerate evaporation by circulating warm, dry air
, 4|Page
across wet materials?
A. Dehumidifier
B. Air mover
C. Moisture meter
D. Thermohygrometer
Answer: B
Rationale: Air movers create high-velocity airflow to increase
evaporation from wet surfaces, facilitating structural drying.
9. Topic: Applied Structural Drying
Which type of dehumidifier is best for large-scale commercial water loss
and can remove high moisture from the air efficiently?
A. Refrigerant dehumidifier
B. Desiccant dehumidifier
C. Portable fan
D. Air scrubber
Answer: B
Rationale: Desiccant dehumidifiers are highly efficient in low-
temperature and large-scale environments, capable of removing large
volumes of moisture from the air.
10. Topic: Psychrometry
Psychrometry is the study of air and water vapor interactions. Which
factor is essential for determining the drying process in a water-damaged
structure?
A. Air temperature, relative humidity, and vapor pressure
B. Surface color and texture
C. Water source contamination level
D. Type of cleaning solution used
