NYC Custodian Engineer Questions & Answers 2026 | High-
Yield Exam Review | Graded A+
1. The first thing one should do before operating a NEW piece of equipment is:
Check the oil
Read the operator's manual
Be properly dressed
Fill the fuel tank
2. *Why should different types of waste be separated on site?*
so the local council can charge us a fair amount of landfill tax
so it can be recycled more easily
so the client can check what is being thrown away
they will take up less room in the skip
3. Before using electrical tools, what should you do?
Check the rating on the label
Check for broken parts
Check that the handle is back
All of the above
4. If a custodian is tasked with preparing a school gymnasium for an event, how
would the use of a burnisher impact the floor's condition?
It would only remove dirt without enhancing shine.
It would damage the floor if used improperly.
, It would require additional cleaning after use.
It would improve the floor's shine and cleanliness, making it more
presentable for the event.
5. What type of personal protective equipment is recommended for custodians
when handling strong disinfectants?
Cotton gloves
Rubber gloves
Chemical-resistant gloves
Latex gloves
6. Why is it important for custodians to read the manufacturer's instructions
before using new equipment?
It allows custodians to skip safety checks.
Reading the manufacturer's instructions ensures proper use and
safety.
It helps in cleaning the equipment faster.
It is a requirement for all custodial staff.
7. Why is it important for custodians to wear chemical-resistant gloves when
using strong disinfectants?
Chemical-resistant gloves protect the skin from harmful chemicals
and prevent exposure.
Chemical-resistant gloves are used to keep hands warm.
Chemical-resistant gloves are only necessary for cleaning floors.
Chemical-resistant gloves are optional if the disinfectant is diluted.
, 8. What is a critical safety check to perform before using any electrical
equipment?
Inspect the tool for damage
Plug it in to test functionality
Clean the tool with chemicals
Use it without checking
9. What should you do if you notice a maintenance issue, such as a broken light
bulb?
Try to fix it without proper tools.
Report the maintenance issue.
Ignore it until someone else notices.
Replace the light bulb yourself.
10. Why is it important to clean the floor before buffing?
Cleaning the floor makes it slippery and unsafe.
Cleaning is unnecessary if the buffer is used correctly.
Cleaning the floor prevents scratches and ensures an even finish.
Cleaning is only needed for carpets, not hard floors.
11. Describe the potential hazards of mixing bleach with ammonia.
Mixing bleach with ammonia increases the effectiveness of
disinfectants.
Mixing bleach with ammonia results in a neutral compound that is safe
for use.
Yield Exam Review | Graded A+
1. The first thing one should do before operating a NEW piece of equipment is:
Check the oil
Read the operator's manual
Be properly dressed
Fill the fuel tank
2. *Why should different types of waste be separated on site?*
so the local council can charge us a fair amount of landfill tax
so it can be recycled more easily
so the client can check what is being thrown away
they will take up less room in the skip
3. Before using electrical tools, what should you do?
Check the rating on the label
Check for broken parts
Check that the handle is back
All of the above
4. If a custodian is tasked with preparing a school gymnasium for an event, how
would the use of a burnisher impact the floor's condition?
It would only remove dirt without enhancing shine.
It would damage the floor if used improperly.
, It would require additional cleaning after use.
It would improve the floor's shine and cleanliness, making it more
presentable for the event.
5. What type of personal protective equipment is recommended for custodians
when handling strong disinfectants?
Cotton gloves
Rubber gloves
Chemical-resistant gloves
Latex gloves
6. Why is it important for custodians to read the manufacturer's instructions
before using new equipment?
It allows custodians to skip safety checks.
Reading the manufacturer's instructions ensures proper use and
safety.
It helps in cleaning the equipment faster.
It is a requirement for all custodial staff.
7. Why is it important for custodians to wear chemical-resistant gloves when
using strong disinfectants?
Chemical-resistant gloves protect the skin from harmful chemicals
and prevent exposure.
Chemical-resistant gloves are used to keep hands warm.
Chemical-resistant gloves are only necessary for cleaning floors.
Chemical-resistant gloves are optional if the disinfectant is diluted.
, 8. What is a critical safety check to perform before using any electrical
equipment?
Inspect the tool for damage
Plug it in to test functionality
Clean the tool with chemicals
Use it without checking
9. What should you do if you notice a maintenance issue, such as a broken light
bulb?
Try to fix it without proper tools.
Report the maintenance issue.
Ignore it until someone else notices.
Replace the light bulb yourself.
10. Why is it important to clean the floor before buffing?
Cleaning the floor makes it slippery and unsafe.
Cleaning is unnecessary if the buffer is used correctly.
Cleaning the floor prevents scratches and ensures an even finish.
Cleaning is only needed for carpets, not hard floors.
11. Describe the potential hazards of mixing bleach with ammonia.
Mixing bleach with ammonia increases the effectiveness of
disinfectants.
Mixing bleach with ammonia results in a neutral compound that is safe
for use.
