Comprehensive Test Review (Qns & Ans)
2025
1. Which of the following is considered the first step in sewage
remediation?
A) Application of antimicrobial agents
B) Containment and control of affected area
C) Removal of standing water
D) Identification of affected materials
Correct ANS: C) Removal of standing water
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, Rationale: The first step in sewage remediation is to remove
standing water to prevent additional damage and mold growth.
2. What is the primary health risk associated with exposure to
untreated sewage?
A) Allergic reactions
B) Respiratory issues
C) Infectious diseases
D) Structural damage
Correct ANS: C) Infectious diseases
Rationale: Untreated sewage contains pathogens that can lead
to infectious diseases, posing significant health risks.
3. Which class of protective clothing is recommended for
sewage remediation workers?
A) Level A
B) Level B
C) Level C
D) Level D
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, Correct ANS: C) Level C
Rationale: Level C protective clothing, including gloves and
respirators, is suitable for environments with potential
contaminants.
4. According to the IICRC S500 standard, what is the main
focus during the restoration of Category 3 water damage?
A) Dehumidification
B) Disinfection
C) Drying
D) Extraction
Correct ANS: B) Disinfection
Rationale: Category 3 water, or black water, contains
significant pathogens, thus making disinfection a primary focus.
5. What is a significant criterion used to differentiate between
Category 1 and Category 2 water damage?
A) Water source
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, B) Presence of hazardous materials
C) Temperature of water
D) Time lapsed since incident
Correct ANS: A) Water source
Rationale: Category 1 refers to clean water from a sanitary
source, while Category 2 may contain contaminants.
6. Which method is considered most effective for removing
microbial contaminants from surfaces in sewage remediation?
A) Steam cleaning
B) Vacuum filtration
C) Chemical biocides
D) Abrasive blasting
Correct ANS: C) Chemical biocides
Rationale: Chemical biocides effectively kill microorganisms
on various surfaces, minimizing contamination.
7. What is the advantage of using Negative Air Pressure
environments during sewage remediation?
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