CRCST Chapter 8 (Cleaning &
Decontamination) Exam Questions
and Answers 100% PASS
What is the preferred pH for detergents used for most cleaning processes?
(A) Low pH
(B) High pH
(C) Neutral pH
(D) It depends on the water temperature and exposure time - CORRECT
ANSWER-C
Which of the following statements about the use of mechanical washers is NOT
true?
(A) Multi-level trays should be separated
(B) Trays with lids should be opened
, (C) Instruments should be disassembled and opened
(D) All items should be washed on the same cycle - CORRECT ANSWER-D
Water must be degassed each time the ultrasonic cleaner's tank is changed, because
(A) excess bubbles from filling reduce the energy of the cavitation process.
(B) excess bubbles reduce the effectiveness of the detergent.
(C) excess bubbles decrease the temperature of the tank.
(D) excess bubbles make it difficult to see items being cleaned. - CORRECT
ANSWER-A
Written cleaning instructions for surgical instruments should be provided by
(A) the mechanical washer manufacturer.
(B) the device manufacturer.
(C) the detergent manufacturer.
(D) the healthcare facility. - CORRECT ANSWER-B
Pyrogens
(A) are fever-producing substances.
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law
Decontamination) Exam Questions
and Answers 100% PASS
What is the preferred pH for detergents used for most cleaning processes?
(A) Low pH
(B) High pH
(C) Neutral pH
(D) It depends on the water temperature and exposure time - CORRECT
ANSWER-C
Which of the following statements about the use of mechanical washers is NOT
true?
(A) Multi-level trays should be separated
(B) Trays with lids should be opened
, (C) Instruments should be disassembled and opened
(D) All items should be washed on the same cycle - CORRECT ANSWER-D
Water must be degassed each time the ultrasonic cleaner's tank is changed, because
(A) excess bubbles from filling reduce the energy of the cavitation process.
(B) excess bubbles reduce the effectiveness of the detergent.
(C) excess bubbles decrease the temperature of the tank.
(D) excess bubbles make it difficult to see items being cleaned. - CORRECT
ANSWER-A
Written cleaning instructions for surgical instruments should be provided by
(A) the mechanical washer manufacturer.
(B) the device manufacturer.
(C) the detergent manufacturer.
(D) the healthcare facility. - CORRECT ANSWER-B
Pyrogens
(A) are fever-producing substances.
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law
