Sterile Processing Technician (CRCST) Final
Practice Exam | 2026–2027|Multiple-Choice
Questions with Detailed Answers And Rationale
6. What is the primary purpose of sterilization in sterile processing?
A. To clean visible soil only
B. To destroy all forms of microbial life, including spores
C. To remove dust from instruments
D. To make instruments look clean
CORRECT ANSWER: B. To destroy all forms of microbial life, including spores
RATIONALE:
B. To destroy all forms of microbial life, including spores is correct because sterilization
eliminates all microorganisms, ensuring patient safety.
3. Which method is most commonly used for heat-sensitive medical devices?
A. Steam sterilization
B. Ethylene oxide (EtO) sterilization
C. Boiling water
D. Dry brushing only
CORRECT ANSWER: B. Ethylene oxide (EtO) sterilization
RATIONALE:
B. Ethylene oxide (EtO) sterilization is correct because it is used for items that cannot
withstand high temperatures or moisture.
9. What is the first step in instrument reprocessing?
A. Sterilization
B. Packaging
C. Decontamination
D. Storage
CORRECT ANSWER: C. Decontamination
,RATIONALE:
C. Decontamination is correct because it removes visible soil and reduces microbial load before
further processing.
1. Which of the following is an example of PPE in sterile processing?
A. Stethoscope
B. Surgical gloves
C. Thermometer
D. Scissors
CORRECT ANSWER: B. Surgical gloves
RATIONALE:
B. Surgical gloves is correct because PPE protects workers from contamination and infection.
7. What is the purpose of a biological indicator in sterilization?
A. To clean instruments
B. To verify sterilization effectiveness using microbial spores
C. To label trays
D. To dry instruments
CORRECT ANSWER: B. To verify sterilization effectiveness using microbial spores
RATIONALE:
B. To verify sterilization effectiveness using microbial spores is correct because it confirms
whether sterilization was successful.
4. Which area in sterile processing is considered the “clean area”?
A. Decontamination room
B. Sterilization and storage area
C. Soiled utility room
D. Waste disposal area
CORRECT ANSWER: B. Sterilization and storage area
RATIONALE:
B. Sterilization and storage area is correct because it is free from contaminated instruments.
, 10. What is the correct order of instrument processing?
A. Sterilization → Cleaning → Storage
B. Cleaning → Decontamination → Packaging
C. Decontamination → Cleaning → Sterilization → Storage
D. Packaging → Sterilization → Cleaning
CORRECT ANSWER: C. Decontamination → Cleaning → Sterilization → Storage
RATIONALE:
C. Decontamination → Cleaning → Sterilization → Storage is correct because instruments
must be properly cleaned before sterilization.
2. Which sterilization method uses pressurized steam?
A. Dry heat
B. Ethylene oxide
C. Steam sterilization (autoclave)
D. Radiation only
CORRECT ANSWER: C. Steam sterilization (autoclave)
RATIONALE:
C. Steam sterilization (autoclave) is correct because it uses high-pressure saturated steam to
kill microorganisms.
8. What is the purpose of packaging instruments before sterilization?
A. To decorate trays
B. To allow sterilant penetration while maintaining sterility afterward
C. To cool instruments faster
D. To reduce instrument weight
CORRECT ANSWER: B. To allow sterilant penetration while maintaining sterility afterward
RATIONALE:
B. To allow sterilant penetration while maintaining sterility afterward is correct because
packaging ensures sterility is maintained after processing.
Practice Exam | 2026–2027|Multiple-Choice
Questions with Detailed Answers And Rationale
6. What is the primary purpose of sterilization in sterile processing?
A. To clean visible soil only
B. To destroy all forms of microbial life, including spores
C. To remove dust from instruments
D. To make instruments look clean
CORRECT ANSWER: B. To destroy all forms of microbial life, including spores
RATIONALE:
B. To destroy all forms of microbial life, including spores is correct because sterilization
eliminates all microorganisms, ensuring patient safety.
3. Which method is most commonly used for heat-sensitive medical devices?
A. Steam sterilization
B. Ethylene oxide (EtO) sterilization
C. Boiling water
D. Dry brushing only
CORRECT ANSWER: B. Ethylene oxide (EtO) sterilization
RATIONALE:
B. Ethylene oxide (EtO) sterilization is correct because it is used for items that cannot
withstand high temperatures or moisture.
9. What is the first step in instrument reprocessing?
A. Sterilization
B. Packaging
C. Decontamination
D. Storage
CORRECT ANSWER: C. Decontamination
,RATIONALE:
C. Decontamination is correct because it removes visible soil and reduces microbial load before
further processing.
1. Which of the following is an example of PPE in sterile processing?
A. Stethoscope
B. Surgical gloves
C. Thermometer
D. Scissors
CORRECT ANSWER: B. Surgical gloves
RATIONALE:
B. Surgical gloves is correct because PPE protects workers from contamination and infection.
7. What is the purpose of a biological indicator in sterilization?
A. To clean instruments
B. To verify sterilization effectiveness using microbial spores
C. To label trays
D. To dry instruments
CORRECT ANSWER: B. To verify sterilization effectiveness using microbial spores
RATIONALE:
B. To verify sterilization effectiveness using microbial spores is correct because it confirms
whether sterilization was successful.
4. Which area in sterile processing is considered the “clean area”?
A. Decontamination room
B. Sterilization and storage area
C. Soiled utility room
D. Waste disposal area
CORRECT ANSWER: B. Sterilization and storage area
RATIONALE:
B. Sterilization and storage area is correct because it is free from contaminated instruments.
, 10. What is the correct order of instrument processing?
A. Sterilization → Cleaning → Storage
B. Cleaning → Decontamination → Packaging
C. Decontamination → Cleaning → Sterilization → Storage
D. Packaging → Sterilization → Cleaning
CORRECT ANSWER: C. Decontamination → Cleaning → Sterilization → Storage
RATIONALE:
C. Decontamination → Cleaning → Sterilization → Storage is correct because instruments
must be properly cleaned before sterilization.
2. Which sterilization method uses pressurized steam?
A. Dry heat
B. Ethylene oxide
C. Steam sterilization (autoclave)
D. Radiation only
CORRECT ANSWER: C. Steam sterilization (autoclave)
RATIONALE:
C. Steam sterilization (autoclave) is correct because it uses high-pressure saturated steam to
kill microorganisms.
8. What is the purpose of packaging instruments before sterilization?
A. To decorate trays
B. To allow sterilant penetration while maintaining sterility afterward
C. To cool instruments faster
D. To reduce instrument weight
CORRECT ANSWER: B. To allow sterilant penetration while maintaining sterility afterward
RATIONALE:
B. To allow sterilant penetration while maintaining sterility afterward is correct because
packaging ensures sterility is maintained after processing.
