Ultimate CNOR Exam Study Guide 2025/2026: 700 Verified Q&A with Detailed Explanations

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CNOR EXAM NEWEST 2025/2026 ACTUAL EXAM TEST BANK
COMPLETE 700 QUESTIONS AND CORRECT DETAILED ANSWERS
(VERIFIED ANSWERS) |ALREADY GRADED A+

Is an enzymatic agent a disinfectant? - ......ANSWER........no

A(n) __________ agent is used to pre-treat instruments. It is non-drying and is NOT a
disinfectant. It is something that BREAKS DOWN organic material. It digests that organic
material and makes it something that is easy to clean and disinfect. It DISSOLVES the
organic stuff and INCLUDES PROTEASES. - ......ANSWER........enzymatic

The size and length of brush lumens to clean instruments is determined by the
manufacturer. - ......ANSWER........true

__________ is very difficult to get off instruments once it's on there. This adds texture on
instruments where spores can hide. - ......ANSWER........biofilm

What is considered more effective:

Automated cleaning (ultrasonic & washers) or manual cleaning?
- ......ANSWER........automated

What type of sterilizers does pre-vacuum autoclave (dynamic air-removal) and gravity
displacement autoclaves fall under? - ......ANSWER........steam

Both pre-vacuum autoclaves (dynamic air-removal) and gravity displacement autoclaves
end in a chamber full of __________ - ......ANSWER........steam

Steam Sterilization

Pre-vacuum autoclave (dynamic air-removal) OR gravity displacement autoclave?

-Sucks air out of the chamber -clean drains are essential -270 degrees F-276 degrees F -
Porous/lumen items in 4 minutes -Nonporous in 3 minutes -Most used today -Very good at

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pulling the steam through blue filters -Good for packaged items - ......ANSWER........pre-
vacuum autoclave

Steam Sterilization

Pre-vacuum autoclave (dynamic air-removal) OR gravity displacement autoclave?

-Steam forces air from chamber -Thermometer closes drain -270 degrees F-276 degrees F -
Clean drains are essential -Porous/lumen items in 10 min -Nonporous in 3 minutes -older
form of sterilization -Takes LONGER to penetrate filters -Hardly anywhere uses this method
anymore - ......ANSWER........gravity displacement autoclave

__________ sterilization is the preferred method of sterilization because of its efficacy
- ......ANSWER........steam

Steam Sterilization

In a pre-vacuum autoclave (dynamic air-removal), how long does it take for porous/lumen
items? - ......ANSWER........4 minutes

Steam Sterilization

In a pre-vacuum autoclave (dynamic air-removal), how long does it take for nonporous
items? - ......ANSWER........3 minutes

Steam Sterilization

In a gravity displacement autoclave, how long does it take for porous/lumen items?
- ......ANSWER........10 minutes

Steam Sterilization

In a gravity displacement autoclave, how long does it take for nonporous items?
- ......ANSWER........3 minutes

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Which steam sterilization is better for packaged items: a pre-vacuum autoclave (dynamic
air-removal) or a gravity displacement autoclave? - ......ANSWER........pre-vacuum
autoclave

True or false?

Clean drains are essential in both pre-vacuum autoclaves (dynamic air-removal) and
gravity displacement autoclaves. - ......ANSWER........true

Steam Sterilization

Pre-vacuum autoclave (dynamic air-removal) OR gravity displacement autoclave?

Sucks air out of the chamber - ......ANSWER........pre-vacuum autoclave

Steam Sterilization

Pre-vacuum autoclave (dynamic air-removal) OR gravity displacement autoclave?

Steam forces air from chamber - ......ANSWER........gravity displacement autoclave

If condensation occurs after steam sterilization and the items are moist, they are
considered __________ and the sterilization process must be restarted.
- ......ANSWER........contaminated

True or false?

In steam sterilization, loads must be removed IMMEDIATELY because leaving the door ajar
to cool increases likelihood of condensation. - ......ANSWER........true

True or false?

After steam sterilization, hot items should be placed on cool solid surfaces or racks.
- ......ANSWER........false

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The requirement for handling items after steam sterilization includes that it must be cooled
on a lined surface until it is easily handled with __________. - ......ANSWER........bare hands

After items are sterilized using steam sterilization, they should be placed on a __________
surface and allowed to cool until it can easily be carried with bare hands.
- ......ANSWER........lined

Which of the following describes the process for gravity displacement sterilization?

a. Steam enters the chamber at the bottom and slowly pushes the air down and out
through a discharge outlet b. Steam enters the chamber at the bottom and slowly pushes
the air up and out through a discharge outlet c. Steam enters the chamber at the top and
slowly pushes the air down and out through a discharge outlet d. Steam enters the
chamber at the side and slowly pushes the air out the other side through a discharge outlet
- ......ANSWER........c

__________ indicators include:

Class 1: Heat Class 2: Pressure - Bowie Dick Class 3: Single parameter Class 4: Multi
parameter Class 5: Integrated Class 6: Emulating indicator - ......ANSWER........chemical

Which 2 class indicators must every tray that we use have? - ......ANSWER........class 1,
class 5

Which class indicator is on the outside of the tray and is only there for verification that the
tray went through heat? - ......ANSWER........class 1

Which class indicator is on the inside of the tray (should be in the top of the tray and in the
corner because this is the most difficult place for steam to penetrate)
- ......ANSWER........class 5

Which 2 classes of chemical indicators are ALL INCLUSIVE? (Meaning there are 4
parameters of sterilization)