Missouri Central Service Technician
Exam Practice Questions And Correct
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Rationales 2026 Q&A | Instant
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1. What is the primary purpose of the decontamination area in central
service?
A. Sterilizing instruments
B. Storing clean supplies
C. Removing soil and reducing microbial load
D. Packaging sterile items
Correct Answer: C
Rationale: The decontamination area is designed to safely clean and
reduce bioburden on used instruments before further processing.
2. Which PPE is required in the decontamination area?
A. Surgical mask only
B. Sterile gloves and gown
, C. Gloves, gown, mask, and eye protection
D. Shoe covers only
Correct Answer: C
Rationale: Full PPE is required to protect against exposure to
bloodborne pathogens and contaminants.
3. What does SPAULDING classification system determine?
A. Cleaning methods for instruments
B. Sterilization cycle times
C. Risk level of medical devices
D. Packaging types
Correct Answer: C
Rationale: Spaulding classification categorizes items as critical, semi-
critical, or non-critical based on infection risk.
4. Critical items require:
A. Low-level disinfection
B. Sterilization
C. No processing
D. Wiping with detergent
Correct Answer: B
Rationale: Critical items enter sterile tissue or bloodstream and must
be sterilized.
5. Which microorganism type is most resistant to sterilization?
A. Vegetative bacteria
, B. Fungi
C. Prions
D. Viruses
Correct Answer: C
Rationale: Prions are highly resistant and require special
reprocessing methods.
6. What is the first step in cleaning instruments?
A. Sterilization
B. Packaging
C. Pre-rinsing or soaking
D. Drying
Correct Answer: C
Rationale: Pre-rinsing prevents soil from drying and becoming
difficult to remove.
7. Enzymatic detergents are used to:
A. Sterilize instruments
B. Break down organic soil
C. Disinfect air
D. Lubricate packaging
Correct Answer: B
Rationale: Enzymatic cleaners break down proteins, fats, and
carbohydrates.
, 8. Which method is most effective for sterilization?
A. Boiling water
B. Steam under pressure
C. Alcohol wipe
D. Air drying
Correct Answer: B
Rationale: Steam under pressure (autoclaving) is the most reliable
sterilization method.
9. Standard autoclave temperature for sterilization is:
A. 80°C
B. 100°C
C. 121°C
D. 150°C
Correct Answer: C
Rationale: 121°C is the standard temperature for steam sterilization
cycles.
10. Sterilization means:
A. Reducing microbes by 50%
B. Removing visible soil
C. Destroying all microorganisms including spores
D. Killing only bacteria
Correct Answer: C
Exam Practice Questions And Correct
Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
Download Pdf
1. What is the primary purpose of the decontamination area in central
service?
A. Sterilizing instruments
B. Storing clean supplies
C. Removing soil and reducing microbial load
D. Packaging sterile items
Correct Answer: C
Rationale: The decontamination area is designed to safely clean and
reduce bioburden on used instruments before further processing.
2. Which PPE is required in the decontamination area?
A. Surgical mask only
B. Sterile gloves and gown
, C. Gloves, gown, mask, and eye protection
D. Shoe covers only
Correct Answer: C
Rationale: Full PPE is required to protect against exposure to
bloodborne pathogens and contaminants.
3. What does SPAULDING classification system determine?
A. Cleaning methods for instruments
B. Sterilization cycle times
C. Risk level of medical devices
D. Packaging types
Correct Answer: C
Rationale: Spaulding classification categorizes items as critical, semi-
critical, or non-critical based on infection risk.
4. Critical items require:
A. Low-level disinfection
B. Sterilization
C. No processing
D. Wiping with detergent
Correct Answer: B
Rationale: Critical items enter sterile tissue or bloodstream and must
be sterilized.
5. Which microorganism type is most resistant to sterilization?
A. Vegetative bacteria
, B. Fungi
C. Prions
D. Viruses
Correct Answer: C
Rationale: Prions are highly resistant and require special
reprocessing methods.
6. What is the first step in cleaning instruments?
A. Sterilization
B. Packaging
C. Pre-rinsing or soaking
D. Drying
Correct Answer: C
Rationale: Pre-rinsing prevents soil from drying and becoming
difficult to remove.
7. Enzymatic detergents are used to:
A. Sterilize instruments
B. Break down organic soil
C. Disinfect air
D. Lubricate packaging
Correct Answer: B
Rationale: Enzymatic cleaners break down proteins, fats, and
carbohydrates.
, 8. Which method is most effective for sterilization?
A. Boiling water
B. Steam under pressure
C. Alcohol wipe
D. Air drying
Correct Answer: B
Rationale: Steam under pressure (autoclaving) is the most reliable
sterilization method.
9. Standard autoclave temperature for sterilization is:
A. 80°C
B. 100°C
C. 121°C
D. 150°C
Correct Answer: C
Rationale: 121°C is the standard temperature for steam sterilization
cycles.
10. Sterilization means:
A. Reducing microbes by 50%
B. Removing visible soil
C. Destroying all microorganisms including spores
D. Killing only bacteria
Correct Answer: C
