CALIFORNIA CUSTODIAN
CERTIFICATION EXAM QUESTIONS
AND VERIFIED ANSWERS WITH. JUST
RELEASED
1. According to Cal/OSHA Title 8, which document must be accessible to all employees
working with hazardous chemicals?
A. Employee Handbook
B. The Building Blueprint
C. Safety Data Sheets (SDS)
D. Product Purchase Receipts
Answer: C
Conceptual Explanation: Cal/OSHA requires Safety Data Sheets (SDS) to be readily
accessible to workers for every hazardous chemical in the workplace to ensure hazard
communication.
2. Which pH value represents a typical heavy-duty floor stripper used in commercial cleaning?
A. pH 3.0
B. pH 12.0 - 13.5
C. pH 7.0
,D. pH 5.5
Answer: B
Conceptual Explanation: Floor strippers are highly alkaline, typically ranging between 12
and 14 on the pH scale, to break down old wax and finishes.
3. What is the primary purpose of ‘dwell time’ when applying a disinfectant to a surface?
A. To allow the surface to dry faster
B. To provide a pleasant scent to the room
C. To save on the amount of chemical used
D. To ensure the chemical remains wet long enough to kill specific pathogens
Answer: D
Conceptual Explanation: Dwell time is the specific period a surface must remain wet with
a disinfectant to effectively kill the microorganisms listed on the product label.
4. When stripping a floor, which pad color is most appropriate for the most aggressive
removal of finish?
A. White
B. Black
C. Tan
D. Red
, Answer: B
Conceptual Explanation: Black pads are the most abrasive and are designed for heavy-
duty stripping of floor finishes.
5. Mixing bleach (sodium hypochlorite) with ammonia results in the release of which toxic
gas?
A. Carbon Dioxide
B. Chloramine gas
C. Nitrogen
D. Oxygen
Answer: B
Conceptual Explanation: Mixing bleach and ammonia creates chloramine gas, which is
highly toxic and can cause severe respiratory damage.
6. In the GHS labeling system, what does a pictogram with a skull and crossbones represent?
A. Flammability
B. Environmental Hazard
C. Acute Toxicity
D. Corrosivity
Answer: C
CERTIFICATION EXAM QUESTIONS
AND VERIFIED ANSWERS WITH. JUST
RELEASED
1. According to Cal/OSHA Title 8, which document must be accessible to all employees
working with hazardous chemicals?
A. Employee Handbook
B. The Building Blueprint
C. Safety Data Sheets (SDS)
D. Product Purchase Receipts
Answer: C
Conceptual Explanation: Cal/OSHA requires Safety Data Sheets (SDS) to be readily
accessible to workers for every hazardous chemical in the workplace to ensure hazard
communication.
2. Which pH value represents a typical heavy-duty floor stripper used in commercial cleaning?
A. pH 3.0
B. pH 12.0 - 13.5
C. pH 7.0
,D. pH 5.5
Answer: B
Conceptual Explanation: Floor strippers are highly alkaline, typically ranging between 12
and 14 on the pH scale, to break down old wax and finishes.
3. What is the primary purpose of ‘dwell time’ when applying a disinfectant to a surface?
A. To allow the surface to dry faster
B. To provide a pleasant scent to the room
C. To save on the amount of chemical used
D. To ensure the chemical remains wet long enough to kill specific pathogens
Answer: D
Conceptual Explanation: Dwell time is the specific period a surface must remain wet with
a disinfectant to effectively kill the microorganisms listed on the product label.
4. When stripping a floor, which pad color is most appropriate for the most aggressive
removal of finish?
A. White
B. Black
C. Tan
D. Red
, Answer: B
Conceptual Explanation: Black pads are the most abrasive and are designed for heavy-
duty stripping of floor finishes.
5. Mixing bleach (sodium hypochlorite) with ammonia results in the release of which toxic
gas?
A. Carbon Dioxide
B. Chloramine gas
C. Nitrogen
D. Oxygen
Answer: B
Conceptual Explanation: Mixing bleach and ammonia creates chloramine gas, which is
highly toxic and can cause severe respiratory damage.
6. In the GHS labeling system, what does a pictogram with a skull and crossbones represent?
A. Flammability
B. Environmental Hazard
C. Acute Toxicity
D. Corrosivity
Answer: C
