FDNY Z51 Written Exam 2026 Newest Exam
Questions and Correct Answers (Verified
Answers) Plus Rationale 2027 Q&A| Instant
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1. Which FDNY qualification is the Z-51 written examination the first
part of?
A. S-56 Construction Site Fire Safety Manager
B. F-80 Fire Safety Director
C. Q-01 Refrigerating System Operating Engineer
D. P-15 Motor Fuel Operator
Answer: C
Rationale: Z-51 is the first part of the Q-01 Certificate of Qualification
examination for Refrigerating System Operating Engineers (RSOEs).
The second part is the Z-52 practical examination.
2. Beginning July 1, 2026, the Z-51 written examination is organized
into how many major categories?
,A. 6
B. 8
C. 10
D. 17
Answer: C
Rationale: FDNY revised the written-exam curriculum effective July 1,
2026, consolidating the previous content into 10 categories.
3. Which of the following is one of the new Z-51 examination
categories?
A. Fire alarm installation
B. Machine Room Safety
C. Elevator inspection
D. Sprinkler hydraulic design
Answer: B
Rationale: Machine Room Safety is specifically identified as one of the
10 categories in the revised 2026 Z-51 curriculum.
4. Which category specifically addresses refrigerant-related
knowledge?
A. Plant Operations
B. Math and Theory
,C. Cooling Tower Operations
D. Refrigerants
Answer: D
Rationale: Refrigerants is one of the 10 revised examination
categories and incorporates material concerning refrigerant
characteristics, handling, safety, and related requirements.
5. How many questions are on the actual revised Z-51 computer
examination?
A. 50
B. 75
C. 100
D. 110
Answer: D
Rationale: The FDNY notice states that the Z-51 exam consists of 110
multiple-choice questions. Additional questions concern building
operation, maintenance, and recordkeeping material.
6. What is the passing score for the Z-51 written examination?
A. 60%
B. 65%
, C. 70%
D. 80%
Answer: C
Rationale: FDNY requires a passing score of at least 70% on the Z-51
computer examination.
7. What is the stated time limit for the 110-question Z-51
examination?
A. 120 minutes
B. 150 minutes
C. 180 minutes
D. 193 minutes
Answer: D
Rationale: The revised FDNY notice specifies 193 minutes for the 110-
question Z-51 examination.
8. Which document is specifically provided during the written
examination?
A. Complete refrigeration textbook
B. Complete Fire Code
C. Basic unit conversion sheet
D. Complete manufacturer's service manual
Questions and Correct Answers (Verified
Answers) Plus Rationale 2027 Q&A| Instant
Download Pdf
1. Which FDNY qualification is the Z-51 written examination the first
part of?
A. S-56 Construction Site Fire Safety Manager
B. F-80 Fire Safety Director
C. Q-01 Refrigerating System Operating Engineer
D. P-15 Motor Fuel Operator
Answer: C
Rationale: Z-51 is the first part of the Q-01 Certificate of Qualification
examination for Refrigerating System Operating Engineers (RSOEs).
The second part is the Z-52 practical examination.
2. Beginning July 1, 2026, the Z-51 written examination is organized
into how many major categories?
,A. 6
B. 8
C. 10
D. 17
Answer: C
Rationale: FDNY revised the written-exam curriculum effective July 1,
2026, consolidating the previous content into 10 categories.
3. Which of the following is one of the new Z-51 examination
categories?
A. Fire alarm installation
B. Machine Room Safety
C. Elevator inspection
D. Sprinkler hydraulic design
Answer: B
Rationale: Machine Room Safety is specifically identified as one of the
10 categories in the revised 2026 Z-51 curriculum.
4. Which category specifically addresses refrigerant-related
knowledge?
A. Plant Operations
B. Math and Theory
,C. Cooling Tower Operations
D. Refrigerants
Answer: D
Rationale: Refrigerants is one of the 10 revised examination
categories and incorporates material concerning refrigerant
characteristics, handling, safety, and related requirements.
5. How many questions are on the actual revised Z-51 computer
examination?
A. 50
B. 75
C. 100
D. 110
Answer: D
Rationale: The FDNY notice states that the Z-51 exam consists of 110
multiple-choice questions. Additional questions concern building
operation, maintenance, and recordkeeping material.
6. What is the passing score for the Z-51 written examination?
A. 60%
B. 65%
, C. 70%
D. 80%
Answer: C
Rationale: FDNY requires a passing score of at least 70% on the Z-51
computer examination.
7. What is the stated time limit for the 110-question Z-51
examination?
A. 120 minutes
B. 150 minutes
C. 180 minutes
D. 193 minutes
Answer: D
Rationale: The revised FDNY notice specifies 193 minutes for the 110-
question Z-51 examination.
8. Which document is specifically provided during the written
examination?
A. Complete refrigeration textbook
B. Complete Fire Code
C. Basic unit conversion sheet
D. Complete manufacturer's service manual
