CRCST Exam Test Prep 150 Questions
and Answers | Latest Version | 2024/2025
| Correct & Verified
What is the ideal pH level for cleaning detergents used on surgical instruments?
A. Highly acidic
✔✔B. Neutral
C. Highly alkaline
D. It doesn't matter
Which type of sterilization is most suitable for heat-sensitive medical equipment?
A. Steam sterilization
B. Dry heat sterilization
✔✔C. Low-temperature gas plasma
D. Flash sterilization
Why are biological indicators used in sterilization cycles?
A. To check drying efficiency
B. To measure temperature accuracy
1
,C. To assess packaging integrity
✔✔D. To verify the effectiveness of the sterilization process
Which of the following is a critical parameter for steam sterilization?
A. Water hardness
B. Temperature and time
✔✔C. Time, temperature, and pressure
D. Detergent concentration
What is the recommended practice when handling contaminated instruments?
A. Rinse with cold water only
✔✔B. Wear appropriate PPE
C. Sort by color
D. Dry before cleaning
Why should instruments be disassembled before cleaning?
A. To make them easier to store
✔✔B. To allow cleaning agents to reach all surfaces
2
,C. To reduce drying time
D. To identify missing parts
Which method of sterilization requires the longest exposure time?
A. Flash sterilization
B. Gas plasma
✔✔C. Dry heat sterilization
D. Steam sterilization
Why is distilled water recommended for rinsing instruments?
A. It speeds up drying time
B. It increases sterilization efficiency
✔✔C. It prevents mineral deposits and corrosion
D. It enhances the shine of instruments
Which type of packaging material is suitable for ethylene oxide sterilization?
A. Aluminum foil
B. Cloth wraps
3
, C. Plastic bags
✔✔D. Tyvek
What should be done if a sterilized package is found damaged before use?
A. Tape it and continue using
B. Store it separately
✔✔C. Reprocess it to maintain sterility
D. Mark it as sterile and proceed
What is the primary benefit of using an ultrasonic cleaner?
A. Faster drying times
B. Lower energy consumption
✔✔C. Effective removal of debris through cavitation
D. Reduced chemical usage
Which type of water is preferred for the final rinse in the cleaning process?
A. Tap water
B. Salt water
4
and Answers | Latest Version | 2024/2025
| Correct & Verified
What is the ideal pH level for cleaning detergents used on surgical instruments?
A. Highly acidic
✔✔B. Neutral
C. Highly alkaline
D. It doesn't matter
Which type of sterilization is most suitable for heat-sensitive medical equipment?
A. Steam sterilization
B. Dry heat sterilization
✔✔C. Low-temperature gas plasma
D. Flash sterilization
Why are biological indicators used in sterilization cycles?
A. To check drying efficiency
B. To measure temperature accuracy
1
,C. To assess packaging integrity
✔✔D. To verify the effectiveness of the sterilization process
Which of the following is a critical parameter for steam sterilization?
A. Water hardness
B. Temperature and time
✔✔C. Time, temperature, and pressure
D. Detergent concentration
What is the recommended practice when handling contaminated instruments?
A. Rinse with cold water only
✔✔B. Wear appropriate PPE
C. Sort by color
D. Dry before cleaning
Why should instruments be disassembled before cleaning?
A. To make them easier to store
✔✔B. To allow cleaning agents to reach all surfaces
2
,C. To reduce drying time
D. To identify missing parts
Which method of sterilization requires the longest exposure time?
A. Flash sterilization
B. Gas plasma
✔✔C. Dry heat sterilization
D. Steam sterilization
Why is distilled water recommended for rinsing instruments?
A. It speeds up drying time
B. It increases sterilization efficiency
✔✔C. It prevents mineral deposits and corrosion
D. It enhances the shine of instruments
Which type of packaging material is suitable for ethylene oxide sterilization?
A. Aluminum foil
B. Cloth wraps
3
, C. Plastic bags
✔✔D. Tyvek
What should be done if a sterilized package is found damaged before use?
A. Tape it and continue using
B. Store it separately
✔✔C. Reprocess it to maintain sterility
D. Mark it as sterile and proceed
What is the primary benefit of using an ultrasonic cleaner?
A. Faster drying times
B. Lower energy consumption
✔✔C. Effective removal of debris through cavitation
D. Reduced chemical usage
Which type of water is preferred for the final rinse in the cleaning process?
A. Tap water
B. Salt water
4
