CALIFORNIA CUSTODIAN FINAL EXAM
PREP QUESTIONS AND VERIFIED
ANSWERS WITH. JUST RELEASED
1. According to GHS standards, which section of the Safety Data Sheet (SDS) contains
information regarding first-aid measures?
A. Section 1
B. Section 8
C. Section 4
D. Section 16
Answer: C
Conceptual Explanation: Section 4 of the SDS specifically outlines first-aid measures,
describing the initial care that should be given by untrained responders to an individual
who has been exposed to the chemical.
2. When stripping a floor, what is the typical pH range of the chemical solution being used?
A. pH 1 to 3
B. pH 11 to 13
C. pH 6 to 8
D. pH 4 to 5
,Answer: B
Conceptual Explanation: Floor strippers are highly alkaline (basic) to effectively break
down the layers of floor finish, typically falling in the pH range of 11 to 13.
3. What is the primary danger of mixing bleach (sodium hypochlorite) with ammonia-based
cleaners?
A. It creates a flammable liquid
B. It produces toxic chloramine gas
C. It neutralizes the cleaning power of both
D. It causes the solution to explode instantly
Answer: B
Conceptual Explanation: Mixing bleach and ammonia triggers a chemical reaction that
releases chloramine gases, which are highly toxic and can cause respiratory distress and
lung damage.
4. What does the acronym HEPA stand for in the context of vacuum filtration?
A. Heavy Elemental Particulate Aeration
B. Highly Effective Particle Absorption
C. High-Efficiency Particulate Air
D. High-Energy Particulate Airflow
Answer: C
, Conceptual Explanation: HEPA stands for High-Efficiency Particulate Air, a standard for
filters that trap 99.97% of particles that are 0.3 microns in diameter.
5. Under OSHA’s Bloodborne Pathogens standard, how should a custodian dispose of a sharp
object (e.g., a needle) found in a trash bin?
A. Wrapped in heavy paper and placed in regular trash
B. Dropped into a red biohazard bag
C. Placed in a leak-proof, puncture-resistant sharps container
D. Placed in a plastic bottle and taped shut
Answer: C
Conceptual Explanation: Sharps must always be placed in a designated, puncture-
resistant, leak-proof container that is labeled or color-coded to prevent needle-stick
injuries.
6. Which pad color is most appropriate for high-speed burnishing (polishing) of a floor?
A. White
B. Green
C. Black
D. Brown
Answer: A
PREP QUESTIONS AND VERIFIED
ANSWERS WITH. JUST RELEASED
1. According to GHS standards, which section of the Safety Data Sheet (SDS) contains
information regarding first-aid measures?
A. Section 1
B. Section 8
C. Section 4
D. Section 16
Answer: C
Conceptual Explanation: Section 4 of the SDS specifically outlines first-aid measures,
describing the initial care that should be given by untrained responders to an individual
who has been exposed to the chemical.
2. When stripping a floor, what is the typical pH range of the chemical solution being used?
A. pH 1 to 3
B. pH 11 to 13
C. pH 6 to 8
D. pH 4 to 5
,Answer: B
Conceptual Explanation: Floor strippers are highly alkaline (basic) to effectively break
down the layers of floor finish, typically falling in the pH range of 11 to 13.
3. What is the primary danger of mixing bleach (sodium hypochlorite) with ammonia-based
cleaners?
A. It creates a flammable liquid
B. It produces toxic chloramine gas
C. It neutralizes the cleaning power of both
D. It causes the solution to explode instantly
Answer: B
Conceptual Explanation: Mixing bleach and ammonia triggers a chemical reaction that
releases chloramine gases, which are highly toxic and can cause respiratory distress and
lung damage.
4. What does the acronym HEPA stand for in the context of vacuum filtration?
A. Heavy Elemental Particulate Aeration
B. Highly Effective Particle Absorption
C. High-Efficiency Particulate Air
D. High-Energy Particulate Airflow
Answer: C
, Conceptual Explanation: HEPA stands for High-Efficiency Particulate Air, a standard for
filters that trap 99.97% of particles that are 0.3 microns in diameter.
5. Under OSHA’s Bloodborne Pathogens standard, how should a custodian dispose of a sharp
object (e.g., a needle) found in a trash bin?
A. Wrapped in heavy paper and placed in regular trash
B. Dropped into a red biohazard bag
C. Placed in a leak-proof, puncture-resistant sharps container
D. Placed in a plastic bottle and taped shut
Answer: C
Conceptual Explanation: Sharps must always be placed in a designated, puncture-
resistant, leak-proof container that is labeled or color-coded to prevent needle-stick
injuries.
6. Which pad color is most appropriate for high-speed burnishing (polishing) of a floor?
A. White
B. Green
C. Black
D. Brown
Answer: A
