NFPA 99 TIMED MOCK EXAM
QUESTIONS WITH CORRECT DETAILED
ANSWERS (1-50) A+ VERIFIED LATEST
VERSION
1. Category 1 systems are those where failure results in:
A. Minor discomfort
B. No impact
C. Serious injury or death
D. Equipment damage
Answer: C
2. Copper piping for medical gas must be:
A. Type M
B. Steel
C. Type K or L cleaned for oxygen service
D. PVC
Answer: C
3. Nitrogen purging during brazing prevents:
A. Pressure loss
B. Internal oxidation
C. Cooling
D. Leakage
Answer: B
4. DISS connectors are designed to:
A. Increase flow
B. Prevent misconnections
C. Reduce pressure
D. Improve sealing only
, Answer: B
5. Master alarm panels are typically located:
A. Mechanical room
B. Nurse station
C. Roof
D. Storage
Answer: B
6. Category 2 system failure results in:
A. Death
B. Severe injury
C. Minor injury
D. No effect
Answer: C
7. Oxygen contamination with oil can cause:
A. Corrosion
B. Explosion/fire hazard
C. Pressure loss
D. Noise
Answer: B
8. Cross-connection testing ensures:
A. Pipe strength
B. Correct gas delivery
C. Color coding
D. Pressure stability
Answer: B
9. Zone valves are used to:
A. Increase pressure
B. Isolate sections
QUESTIONS WITH CORRECT DETAILED
ANSWERS (1-50) A+ VERIFIED LATEST
VERSION
1. Category 1 systems are those where failure results in:
A. Minor discomfort
B. No impact
C. Serious injury or death
D. Equipment damage
Answer: C
2. Copper piping for medical gas must be:
A. Type M
B. Steel
C. Type K or L cleaned for oxygen service
D. PVC
Answer: C
3. Nitrogen purging during brazing prevents:
A. Pressure loss
B. Internal oxidation
C. Cooling
D. Leakage
Answer: B
4. DISS connectors are designed to:
A. Increase flow
B. Prevent misconnections
C. Reduce pressure
D. Improve sealing only
, Answer: B
5. Master alarm panels are typically located:
A. Mechanical room
B. Nurse station
C. Roof
D. Storage
Answer: B
6. Category 2 system failure results in:
A. Death
B. Severe injury
C. Minor injury
D. No effect
Answer: C
7. Oxygen contamination with oil can cause:
A. Corrosion
B. Explosion/fire hazard
C. Pressure loss
D. Noise
Answer: B
8. Cross-connection testing ensures:
A. Pipe strength
B. Correct gas delivery
C. Color coding
D. Pressure stability
Answer: B
9. Zone valves are used to:
A. Increase pressure
B. Isolate sections
