CNT Clean Technique 2026/2027 exam with verified questions and answers together with
rationales
1. The primary purpose of clean technique is to:
A. Eliminate every microorganism
B. Reduce the number and transmission of microorganisms
C. Create a completely sterile environment
D. Replace hand hygiene
Correct Answer: B. Reduce the number and transmission of microorganisms
Rationale: Clean technique, or medical asepsis, reduces microorganisms and prevents their spread.
2. The most important action for preventing the spread of infection is:
A. Wearing a gown
B. Wearing a mask
C. Hand hygiene
D. Wearing shoe covers
Correct Answer: C. Hand hygiene
Rationale: Proper hand hygiene is the most effective basic measure for preventing transmission of
microorganisms.
3. Hand hygiene should be performed:
A. Only at the beginning of the shift
B. Before and after patient contact
C. Only when hands appear dirty
D. Once every four hours
Correct Answer: B. Before and after patient contact
Rationale: Hand hygiene prevents transferring microorganisms between the patient, environment, and
healthcare worker.
4. Soap and water are especially required when:
A. Hands are visibly soiled
B. The nurse is in a hurry
C. The patient is sleeping
D. Gloves were worn
Correct Answer: A. Hands are visibly soiled
Rationale: Visible contamination requires washing with soap and water.
5. Alcohol-based hand rub should be applied:
,A. To visibly dirty hands only
B. To dry hands and rubbed until dry
C. Over wet soap
D. Only to the fingertips
Correct Answer: B. To dry hands and rubbed until dry
Rationale: Alcohol-based hand rub is effective when applied correctly and allowed to dry.
6. Gloves are worn primarily to:
A. Replace hand hygiene
B. Protect against anticipated contact with blood or body fluids
C. Prevent all infections
D. Keep hands warm
Correct Answer: B. Protect against anticipated contact with blood or body fluids
Rationale: Gloves provide a barrier against contamination and exposure.
7. After removing gloves, the nurse should:
A. Immediately touch the patient's face
B. Perform hand hygiene
C. Put on another pair without washing
D. Touch the medication cart
Correct Answer: B. Perform hand hygiene
Rationale: Hands may become contaminated during glove removal.
8. Standard precautions should be used:
A. Only for patients with known infections
B. For all patients
C. Only in the operating room
D. Only for patients with fever
Correct Answer: B. For all patients
Rationale: Standard precautions are based on the assumption that blood and certain body fluids may be
infectious.
9. Medical asepsis is also called:
A. Clean technique
B. Sterile technique
C. Surgical asepsis
D. Isolation technique
Correct Answer: A. Clean technique
Rationale: Medical asepsis reduces the number and spread of microorganisms.
, 10. Surgical asepsis is also called:
A. Clean technique
B. Sterile technique
C. Routine hygiene
D. Standard precaution
Correct Answer: B. Sterile technique
Rationale: Surgical asepsis aims to maintain an environment free from microorganisms.
11. Which action contaminates a clean supply?
A. Opening it with clean hands
B. Placing it on a contaminated surface
C. Keeping it covered
D. Using it according to instructions
Correct Answer: B. Placing it on a contaminated surface
Rationale: Contact with a contaminated surface can transfer microorganisms.
12. A clean field should be:
A. Placed on a clean, dry surface
B. Placed on the floor
C. Placed beside used dressings
D. Placed on a wet surface
Correct Answer: A. Placed on a clean, dry surface
Rationale: A clean, dry area reduces contamination.
13. When performing clean wound care, the nurse should:
A. Use the same contaminated material repeatedly
B. Follow the prescribed clean technique
C. Touch sterile supplies with dirty gloves
D. Reuse disposable supplies
Correct Answer: B. Follow the prescribed clean technique
Rationale: Consistent technique reduces the risk of introducing microorganisms.
14. A contaminated item should be:
A. Returned to the clean supply area
B. Kept separate from clean supplies
C. Placed on the patient's bed
D. Reused without cleaning
Correct Answer: B. Kept separate from clean supplies
Rationale: Separation prevents cross-contamination.
rationales
1. The primary purpose of clean technique is to:
A. Eliminate every microorganism
B. Reduce the number and transmission of microorganisms
C. Create a completely sterile environment
D. Replace hand hygiene
Correct Answer: B. Reduce the number and transmission of microorganisms
Rationale: Clean technique, or medical asepsis, reduces microorganisms and prevents their spread.
2. The most important action for preventing the spread of infection is:
A. Wearing a gown
B. Wearing a mask
C. Hand hygiene
D. Wearing shoe covers
Correct Answer: C. Hand hygiene
Rationale: Proper hand hygiene is the most effective basic measure for preventing transmission of
microorganisms.
3. Hand hygiene should be performed:
A. Only at the beginning of the shift
B. Before and after patient contact
C. Only when hands appear dirty
D. Once every four hours
Correct Answer: B. Before and after patient contact
Rationale: Hand hygiene prevents transferring microorganisms between the patient, environment, and
healthcare worker.
4. Soap and water are especially required when:
A. Hands are visibly soiled
B. The nurse is in a hurry
C. The patient is sleeping
D. Gloves were worn
Correct Answer: A. Hands are visibly soiled
Rationale: Visible contamination requires washing with soap and water.
5. Alcohol-based hand rub should be applied:
,A. To visibly dirty hands only
B. To dry hands and rubbed until dry
C. Over wet soap
D. Only to the fingertips
Correct Answer: B. To dry hands and rubbed until dry
Rationale: Alcohol-based hand rub is effective when applied correctly and allowed to dry.
6. Gloves are worn primarily to:
A. Replace hand hygiene
B. Protect against anticipated contact with blood or body fluids
C. Prevent all infections
D. Keep hands warm
Correct Answer: B. Protect against anticipated contact with blood or body fluids
Rationale: Gloves provide a barrier against contamination and exposure.
7. After removing gloves, the nurse should:
A. Immediately touch the patient's face
B. Perform hand hygiene
C. Put on another pair without washing
D. Touch the medication cart
Correct Answer: B. Perform hand hygiene
Rationale: Hands may become contaminated during glove removal.
8. Standard precautions should be used:
A. Only for patients with known infections
B. For all patients
C. Only in the operating room
D. Only for patients with fever
Correct Answer: B. For all patients
Rationale: Standard precautions are based on the assumption that blood and certain body fluids may be
infectious.
9. Medical asepsis is also called:
A. Clean technique
B. Sterile technique
C. Surgical asepsis
D. Isolation technique
Correct Answer: A. Clean technique
Rationale: Medical asepsis reduces the number and spread of microorganisms.
, 10. Surgical asepsis is also called:
A. Clean technique
B. Sterile technique
C. Routine hygiene
D. Standard precaution
Correct Answer: B. Sterile technique
Rationale: Surgical asepsis aims to maintain an environment free from microorganisms.
11. Which action contaminates a clean supply?
A. Opening it with clean hands
B. Placing it on a contaminated surface
C. Keeping it covered
D. Using it according to instructions
Correct Answer: B. Placing it on a contaminated surface
Rationale: Contact with a contaminated surface can transfer microorganisms.
12. A clean field should be:
A. Placed on a clean, dry surface
B. Placed on the floor
C. Placed beside used dressings
D. Placed on a wet surface
Correct Answer: A. Placed on a clean, dry surface
Rationale: A clean, dry area reduces contamination.
13. When performing clean wound care, the nurse should:
A. Use the same contaminated material repeatedly
B. Follow the prescribed clean technique
C. Touch sterile supplies with dirty gloves
D. Reuse disposable supplies
Correct Answer: B. Follow the prescribed clean technique
Rationale: Consistent technique reduces the risk of introducing microorganisms.
14. A contaminated item should be:
A. Returned to the clean supply area
B. Kept separate from clean supplies
C. Placed on the patient's bed
D. Reused without cleaning
Correct Answer: B. Kept separate from clean supplies
Rationale: Separation prevents cross-contamination.
