CALIFORNIA CUSTODIAN CERTIFICATION EXAM
2026/2027 ACCURATE EXAM APPROVED QUESTIONS
AND CORRECT DETAILED ANSWERS WITH RATIONALES
(RELIABLE ANSWERS) LATEST UPDATED VERSION 2026
EDITION |GUARANTEED PASS A+ |BRAND NEW! |JUST
RELEASED
1. When dusting an office, what is the best procedure?
A) Dust vertical surfaces first, then flat surfaces
B) Dust flat surfaces first, then high surfaces
C) Dust from the top down and from clean to dirty areas
D) Dust from the bottom up to avoid missing spots
CORRECT ANSWER: C – Dusting from top to bottom prevents
dust from falling onto already-cleaned surfaces. Working from clean
to dirty areas prevents cross-contamination.
2. What is the correct mopping pattern to minimize
recontamination?
A) Figure-eight pattern starting from the door
B) Random overlapping strokes
C) "S" pattern working from the farthest corner toward the exit
D) Circular pattern ending in the center
,CORRECT ANSWER: C – Working from the farthest corner
toward the exit prevents walking over cleaned areas, reducing
recontamination and slip risk.
3. What tool is most effective for daily floor cleaning of large areas?
A) Dust mop
B) Push broom
C) Vacuum cleaner
D) Carpet sweeper
CORRECT ANSWER: B – Push brooms are commonly used for
daily floor cleaning because they efficiently cover large areas and
remove dry debris.
4. A custodian notices a wet floor near a drinking fountain but no
caution sign is present. What is the FIRST required action?
A) Mop the area immediately
B) Place a wet floor warning sign and then dry the area
C) Report the hazard to a supervisor before acting
D) Ignore it if no one is nearby
CORRECT ANSWER: B – California workplace safety standards
(Cal/OSHA) require immediate warning of slip hazards. Placing a
sign first protects others while the custodian addresses the spill.
,5. Which document provides detailed information about the hazards
of a chemical, including its physical and health risks?
A) Standard Operating Procedure (SOP)
B) Material Requisition Form
C) Safety Data Sheet (SDS)
D) Equipment Maintenance Log
CORRECT ANSWER: C – The Safety Data Sheet (SDS) is the
primary document required by OSHA to communicate the specific
hazards, handling instructions, and emergency measures for
chemical products.
6. When mixing cleaning chemicals, what is the most important
safety rule to follow?
A) Always mix bleach and ammonia for extra strength
B) Add water to the chemical to prevent splashing
C) Add the chemical to water to prevent a concentrated reaction
D) Use hot water to increase the effectiveness of all detergents
CORRECT ANSWER: C – Adding chemical to water (rather than
water to chemical) prevents the chemical from splashing out or
creating a concentrated reaction at the surface.
7. What color of waste container is specifically designated for sharps,
such as needles or broken glass contaminated with blood?
, A) Red
B) Yellow
C) Blue
D) Green
CORRECT ANSWER: A – Red containers are internationally
recognized symbols for biohazardous materials and sharps,
indicating that the contents require specialized disposal.
8. A custodian notices a frayed power cord on a heavy-duty floor
burnisher. What is the immediate correct action?
A) Tape the cord and continue using the machine
B) Report it at the end of the shift
C) Remove the machine from service and report for repair or
replacement
D) Use the machine only on non-carpeted areas
CORRECT ANSWER: C – Damaged cords create electrocution and
fire hazards and must be removed from service immediately.
9. What is the primary purpose of applying a floor finish to a hard
surface floor?
A) To increase the floor's slip resistance permanently
B) To provide a protective coating that enhances appearance and
facilitates maintenance
2026/2027 ACCURATE EXAM APPROVED QUESTIONS
AND CORRECT DETAILED ANSWERS WITH RATIONALES
(RELIABLE ANSWERS) LATEST UPDATED VERSION 2026
EDITION |GUARANTEED PASS A+ |BRAND NEW! |JUST
RELEASED
1. When dusting an office, what is the best procedure?
A) Dust vertical surfaces first, then flat surfaces
B) Dust flat surfaces first, then high surfaces
C) Dust from the top down and from clean to dirty areas
D) Dust from the bottom up to avoid missing spots
CORRECT ANSWER: C – Dusting from top to bottom prevents
dust from falling onto already-cleaned surfaces. Working from clean
to dirty areas prevents cross-contamination.
2. What is the correct mopping pattern to minimize
recontamination?
A) Figure-eight pattern starting from the door
B) Random overlapping strokes
C) "S" pattern working from the farthest corner toward the exit
D) Circular pattern ending in the center
,CORRECT ANSWER: C – Working from the farthest corner
toward the exit prevents walking over cleaned areas, reducing
recontamination and slip risk.
3. What tool is most effective for daily floor cleaning of large areas?
A) Dust mop
B) Push broom
C) Vacuum cleaner
D) Carpet sweeper
CORRECT ANSWER: B – Push brooms are commonly used for
daily floor cleaning because they efficiently cover large areas and
remove dry debris.
4. A custodian notices a wet floor near a drinking fountain but no
caution sign is present. What is the FIRST required action?
A) Mop the area immediately
B) Place a wet floor warning sign and then dry the area
C) Report the hazard to a supervisor before acting
D) Ignore it if no one is nearby
CORRECT ANSWER: B – California workplace safety standards
(Cal/OSHA) require immediate warning of slip hazards. Placing a
sign first protects others while the custodian addresses the spill.
,5. Which document provides detailed information about the hazards
of a chemical, including its physical and health risks?
A) Standard Operating Procedure (SOP)
B) Material Requisition Form
C) Safety Data Sheet (SDS)
D) Equipment Maintenance Log
CORRECT ANSWER: C – The Safety Data Sheet (SDS) is the
primary document required by OSHA to communicate the specific
hazards, handling instructions, and emergency measures for
chemical products.
6. When mixing cleaning chemicals, what is the most important
safety rule to follow?
A) Always mix bleach and ammonia for extra strength
B) Add water to the chemical to prevent splashing
C) Add the chemical to water to prevent a concentrated reaction
D) Use hot water to increase the effectiveness of all detergents
CORRECT ANSWER: C – Adding chemical to water (rather than
water to chemical) prevents the chemical from splashing out or
creating a concentrated reaction at the surface.
7. What color of waste container is specifically designated for sharps,
such as needles or broken glass contaminated with blood?
, A) Red
B) Yellow
C) Blue
D) Green
CORRECT ANSWER: A – Red containers are internationally
recognized symbols for biohazardous materials and sharps,
indicating that the contents require specialized disposal.
8. A custodian notices a frayed power cord on a heavy-duty floor
burnisher. What is the immediate correct action?
A) Tape the cord and continue using the machine
B) Report it at the end of the shift
C) Remove the machine from service and report for repair or
replacement
D) Use the machine only on non-carpeted areas
CORRECT ANSWER: C – Damaged cords create electrocution and
fire hazards and must be removed from service immediately.
9. What is the primary purpose of applying a floor finish to a hard
surface floor?
A) To increase the floor's slip resistance permanently
B) To provide a protective coating that enhances appearance and
facilitates maintenance
