CALIFORNIA CUSTODIAN CERTIFICATION EXAM BEST
PRACTICE QUESTIONS AND CORRECT ANSWERS
(VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A |
INSTANT DOWNLOAD PDF
Cleaning Methods & Daily Routines (Q1–35)
1. What is the primary purpose of dust mopping hard floors?
A. To disinfect the surface
B. To remove loose soil and debris before wet mopping
C. To polish the floor
D. To strip old wax
Dry/dust mopping removes loose dirt so wet mopping is more effective.
2. Which pattern is recommended for systematic dust mopping?
A. Random crisscross
B. Overlapping, straight passes from one side of the room to the other
C. Circular only in the center
D. Only along baseboards
Overlapping straight passes ensure complete coverage.
3. When wet mopping, the mop should be:
A. Soaking wet
B. Well-wrung, damp
C. Completely dry
D. Dripping constantly
A damp mop cleans without leaving excess water that can cause slips or damage.
4. The best sequence for cleaning a restroom is:
,A. Floors, then counters, then fixtures
B. High surfaces to low surfaces, finishing with floors
C. urinals and toilets, then sinks, then mirrors
D. Floors first to remove dirt, then fixtures
“Top to bottom” prevents re-soiling cleaned areas.
5. Which tool is best for removing cobwebs from corners and high areas?
A. Steel wool
B. Extendable duster with soft bristles
C. Scrub brush
D. Scraper
Soft dusters reach high areas without damaging surfaces.
6. To prevent cross-contamination, a custodian should:
A. Use the same mop for all areas
B. Use color-coded cloths/mops for different areas (e.g., restrooms vs classrooms)
C. Rinse the mop only at the end of the shift
D. Use one bucket for all solutions
Color-coding and separate tools reduce spread of germs.
7. Which action best helps prevent slip hazards during mopping?
A. Mop quickly and leave the floor wet
B. Place “Wet Floor” signs and mop in sections
C. Mop only at night regardless of traffic
D. Use extra water to rinse better
Warning signs and section mopping reduce slip risks.
8. The main purpose of a “damp dusting” method is to:
A. Saturate surfaces with water
B. Trap dust and prevent it from becoming airborne
,C. Remove grease only
D. Disinfect all surfaces
Damp dusting captures dust instead of spreading it.
9. Which of the following should be done before vacuuming a carpeted area?
A. Soak the carpet with water
B. Remove large debris and check for objects that could damage the vacuum
C. Apply wax to the carpet
D. Turn off all lights
Removing large objects protects equipment and improves cleaning.
10. For high-traffic carpet areas, the most effective vacuuming technique is:
A. One slow pass in one direction
B. Multiple overlapping passes in different directions
C. Only along the edges
D. Vacuum only once a week
Overlapping passes remove more embedded soil.
11. Which of the following is a key reason to empty trash cans regularly during a
shift?
A. To reduce the weight of the cart
B. To control odors, pests, and overflow
C. To use more bags
D. To make the job last longer
Frequent trash removal prevents odors, pests, and mess.
12. When replacing a trash liner, the custodian should:
A. Leave the old liner inside if it looks clean
B. Remove the old liner, inspect the can, and install a new liner properly
, C. Tie the old liner and leave it next to the can
D. Reuse liners whenever possible
Proper liner replacement maintains hygiene and appearance.
13. Which of the following best describes “spot cleaning” on carpet?
A. Shampooing the entire room
B. Treating small stained areas promptly with appropriate cleaner
C. Ignoring small spots until they grow
D. Scrubbing with a wire brush
Spot cleaning targets stains quickly to prevent setting.
14. When cleaning glass and mirrors, the best practice is to:
A. Use a dry cloth only
B. Use a glass cleaner and lint-free cloth or squeegee
C. Use abrasive pads
D. Spray directly onto electrical fixtures
Glass cleaner and lint-free materials give a streak-free finish.
15. To maintain a clean and safe entrance, a custodian should:
A. Ignore mats and floors during busy times
B. Vacuum/mop entry areas frequently and maintain entrance mats
C. Only clean entrances at night
D. Use wax only, no daily cleaning
Entries collect the most soil and need frequent attention.
16. Which of the following is the best reason to follow a posted cleaning schedule?
A. It makes the job more boring
B. It ensures consistent, thorough cleaning and accountability
C. It allows skipping tasks
D. It is only for new employees
PRACTICE QUESTIONS AND CORRECT ANSWERS
(VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A |
INSTANT DOWNLOAD PDF
Cleaning Methods & Daily Routines (Q1–35)
1. What is the primary purpose of dust mopping hard floors?
A. To disinfect the surface
B. To remove loose soil and debris before wet mopping
C. To polish the floor
D. To strip old wax
Dry/dust mopping removes loose dirt so wet mopping is more effective.
2. Which pattern is recommended for systematic dust mopping?
A. Random crisscross
B. Overlapping, straight passes from one side of the room to the other
C. Circular only in the center
D. Only along baseboards
Overlapping straight passes ensure complete coverage.
3. When wet mopping, the mop should be:
A. Soaking wet
B. Well-wrung, damp
C. Completely dry
D. Dripping constantly
A damp mop cleans without leaving excess water that can cause slips or damage.
4. The best sequence for cleaning a restroom is:
,A. Floors, then counters, then fixtures
B. High surfaces to low surfaces, finishing with floors
C. urinals and toilets, then sinks, then mirrors
D. Floors first to remove dirt, then fixtures
“Top to bottom” prevents re-soiling cleaned areas.
5. Which tool is best for removing cobwebs from corners and high areas?
A. Steel wool
B. Extendable duster with soft bristles
C. Scrub brush
D. Scraper
Soft dusters reach high areas without damaging surfaces.
6. To prevent cross-contamination, a custodian should:
A. Use the same mop for all areas
B. Use color-coded cloths/mops for different areas (e.g., restrooms vs classrooms)
C. Rinse the mop only at the end of the shift
D. Use one bucket for all solutions
Color-coding and separate tools reduce spread of germs.
7. Which action best helps prevent slip hazards during mopping?
A. Mop quickly and leave the floor wet
B. Place “Wet Floor” signs and mop in sections
C. Mop only at night regardless of traffic
D. Use extra water to rinse better
Warning signs and section mopping reduce slip risks.
8. The main purpose of a “damp dusting” method is to:
A. Saturate surfaces with water
B. Trap dust and prevent it from becoming airborne
,C. Remove grease only
D. Disinfect all surfaces
Damp dusting captures dust instead of spreading it.
9. Which of the following should be done before vacuuming a carpeted area?
A. Soak the carpet with water
B. Remove large debris and check for objects that could damage the vacuum
C. Apply wax to the carpet
D. Turn off all lights
Removing large objects protects equipment and improves cleaning.
10. For high-traffic carpet areas, the most effective vacuuming technique is:
A. One slow pass in one direction
B. Multiple overlapping passes in different directions
C. Only along the edges
D. Vacuum only once a week
Overlapping passes remove more embedded soil.
11. Which of the following is a key reason to empty trash cans regularly during a
shift?
A. To reduce the weight of the cart
B. To control odors, pests, and overflow
C. To use more bags
D. To make the job last longer
Frequent trash removal prevents odors, pests, and mess.
12. When replacing a trash liner, the custodian should:
A. Leave the old liner inside if it looks clean
B. Remove the old liner, inspect the can, and install a new liner properly
, C. Tie the old liner and leave it next to the can
D. Reuse liners whenever possible
Proper liner replacement maintains hygiene and appearance.
13. Which of the following best describes “spot cleaning” on carpet?
A. Shampooing the entire room
B. Treating small stained areas promptly with appropriate cleaner
C. Ignoring small spots until they grow
D. Scrubbing with a wire brush
Spot cleaning targets stains quickly to prevent setting.
14. When cleaning glass and mirrors, the best practice is to:
A. Use a dry cloth only
B. Use a glass cleaner and lint-free cloth or squeegee
C. Use abrasive pads
D. Spray directly onto electrical fixtures
Glass cleaner and lint-free materials give a streak-free finish.
15. To maintain a clean and safe entrance, a custodian should:
A. Ignore mats and floors during busy times
B. Vacuum/mop entry areas frequently and maintain entrance mats
C. Only clean entrances at night
D. Use wax only, no daily cleaning
Entries collect the most soil and need frequent attention.
16. Which of the following is the best reason to follow a posted cleaning schedule?
A. It makes the job more boring
B. It ensures consistent, thorough cleaning and accountability
C. It allows skipping tasks
D. It is only for new employees
