California Custodian Certification Exam
With Actual Questions & Verified
Answers, Plus Explained
Rationales/Expert Verified For
Guaranteed 100% Pass 2026/Latest
Update/Instant Download Pdf
1. What is the primary purpose of a custodian in a school or public
facility?
A. To manage budgets
B. To maintain cleanliness and safety of the facility
C. To teach students
D. To supervise security staff
Answer: B
Rationale: The main role of a custodian is to ensure the facility is
clean, sanitary, and safe for occupants.
2. Which chemical is commonly used for disinfecting surfaces?
A. Vinegar
B. Ammonia
C. Sodium hypochlorite (bleach)
D. Baking soda
Answer: C
Rationale: Sodium hypochlorite is a widely used disinfectant
effective against many pathogens.
3. What does SDS stand for in custodial work?
A. Safety Data Sheet
, B. Standard Disposal System
C. Sanitation Duty Schedule
D. Safety Duty Standard
Answer: A
Rationale: SDS provides detailed safety and handling
information about chemicals.
4. What is the first step before using any cleaning chemical?
A. Mix it with water
B. Shake the container
C. Read the label and SDS
D. Heat the solution
Answer: C
Rationale: Reading labels and SDS ensures safe and proper use
of chemicals.
5. Which tool is best for removing dust from high surfaces?
A. Mop
B. Feather duster or extension duster
C. Scrub brush
D. Squeegee
Answer: B
Rationale: Extension dusters safely reach high areas without
ladders when appropriate.
6. What is the proper order of cleaning a restroom?
A. Floors first
B. Toilets, sinks, then floors
C. Floors, then toilets
D. Only toilets
Answer: B
, Rationale: Cleaning from least contaminated to most
contaminated prevents cross-contamination.
7. What should be done if a chemical spill occurs?
A. Ignore it
B. Report and follow spill cleanup procedures
C. Wash it down drain immediately
D. Cover it with paper towels only
Answer: B
Rationale: Proper reporting and procedures ensure safety and
compliance.
8. What is PPE used for?
A. Decorating
B. Personal protection against hazards
C. Cleaning floors only
D. Mixing chemicals
Answer: B
Rationale: Personal Protective Equipment reduces exposure to
harmful substances.
9. Which is a correct way to lift heavy objects?
A. Bend at waist
B. Keep back straight and lift with legs
C. Twist while lifting
D. Hold object away from body
Answer: B
Rationale: Proper lifting reduces risk of back injury.
10. What is the purpose of wet floor signs?
A. Decoration
B. To warn of slip hazards
C. To mark clean floors
With Actual Questions & Verified
Answers, Plus Explained
Rationales/Expert Verified For
Guaranteed 100% Pass 2026/Latest
Update/Instant Download Pdf
1. What is the primary purpose of a custodian in a school or public
facility?
A. To manage budgets
B. To maintain cleanliness and safety of the facility
C. To teach students
D. To supervise security staff
Answer: B
Rationale: The main role of a custodian is to ensure the facility is
clean, sanitary, and safe for occupants.
2. Which chemical is commonly used for disinfecting surfaces?
A. Vinegar
B. Ammonia
C. Sodium hypochlorite (bleach)
D. Baking soda
Answer: C
Rationale: Sodium hypochlorite is a widely used disinfectant
effective against many pathogens.
3. What does SDS stand for in custodial work?
A. Safety Data Sheet
, B. Standard Disposal System
C. Sanitation Duty Schedule
D. Safety Duty Standard
Answer: A
Rationale: SDS provides detailed safety and handling
information about chemicals.
4. What is the first step before using any cleaning chemical?
A. Mix it with water
B. Shake the container
C. Read the label and SDS
D. Heat the solution
Answer: C
Rationale: Reading labels and SDS ensures safe and proper use
of chemicals.
5. Which tool is best for removing dust from high surfaces?
A. Mop
B. Feather duster or extension duster
C. Scrub brush
D. Squeegee
Answer: B
Rationale: Extension dusters safely reach high areas without
ladders when appropriate.
6. What is the proper order of cleaning a restroom?
A. Floors first
B. Toilets, sinks, then floors
C. Floors, then toilets
D. Only toilets
Answer: B
, Rationale: Cleaning from least contaminated to most
contaminated prevents cross-contamination.
7. What should be done if a chemical spill occurs?
A. Ignore it
B. Report and follow spill cleanup procedures
C. Wash it down drain immediately
D. Cover it with paper towels only
Answer: B
Rationale: Proper reporting and procedures ensure safety and
compliance.
8. What is PPE used for?
A. Decorating
B. Personal protection against hazards
C. Cleaning floors only
D. Mixing chemicals
Answer: B
Rationale: Personal Protective Equipment reduces exposure to
harmful substances.
9. Which is a correct way to lift heavy objects?
A. Bend at waist
B. Keep back straight and lift with legs
C. Twist while lifting
D. Hold object away from body
Answer: B
Rationale: Proper lifting reduces risk of back injury.
10. What is the purpose of wet floor signs?
A. Decoration
B. To warn of slip hazards
C. To mark clean floors
