FDNY H-20 – Handling of Organic Peroxides
Practice-Exam Questions And Correct Answers
(Verified Answers) Plus Rationales 2026 Q&A |
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1.
Which characteristic makes organic peroxides especially hazardous?
A. High electrical conductivity
B. Low melting point
C. Ability to self-accelerate decomposition
D. High boiling point
Correct answer: C
Organic peroxides can decompose violently when heated, making SADT
a critical hazard.
2.
The SADT of an organic peroxide refers to:
A. Sudden Activation Degradation Time
B. Safe Ambient Delivery Temperature
C. Self-Accelerating Decomposition Temperature
D. Systemic Aerobic Decomposition Threshold
Correct answer: C
SADT is the temperature at which self-accelerated decomposition
begins.
,3.
Which FDNY permit is required for storage or handling of organic
peroxide quantities above exempt amounts?
A. C-42
B. P-12
C. H-20
D. S-98
Correct answer: C
H-20 is the FDNY Certificate of Fitness for Handling Organic Peroxides.
4.
Organic peroxides are chemically classified as:
A. Strong acids
B. Oxidizers with fuel and oxidizer in the same molecule
C. Strong bases
D. Radioactive materials
Correct answer: B
Organic peroxides contain both oxidizing and fuel components within
the molecule.
5.
Which factor increases the likelihood of decomposition?
A. Cooling
B. Ventilation
C. Heating
D. Dry storage
Correct answer: C
Heat accelerates decomposition reactions of organic peroxides.
,6.
Which statement best describes the storage temperature of most
organic peroxides?
A. Must always be above 100°F
B. Must always be below freezing
C. Must remain below their control temperature
D. Must remain exactly at room temperature
Correct answer: C
Control temperature keeps the peroxide stable and reduces
decomposition risk.
7.
Who must be present when organic peroxides exceeding permitted
quantities are handled?
A. Firefighter
B. Business owner
C. H-20 Certificate of Fitness holder
D. Any employee
Correct answer: C
The H-20 C of F holder ensures compliant handling and emergency
readiness.
8.
Organic peroxide storage areas must:
A. Always be in basements
B. Be kept locked and posted with hazard signs
C. Be kept unmonitored
D. Be shared with combustibles
, Correct answer: B
Restricted access and proper signage are required for safety.
9.
A container showing signs of bulging most likely indicates:
A. Lack of ventilation
B. Runaway decomposition
C. Static buildup
D. Water contamination
Correct answer: B
Bulging results from gas formation during decomposition.
10.
Which class of organic peroxide is the most hazardous?
A. Class I
B. Class II
C. Class III
D. Class V
Correct answer: A
Class I materials present the highest explosion hazard.
11.
Organic peroxides should never be stored near:
A. Refrigeration units
B. Water jugs
C. Heat sources
D. Empty containers
Correct answer: C
Heat increases risk of decomposition.
Practice-Exam Questions And Correct Answers
(Verified Answers) Plus Rationales 2026 Q&A |
Instant Download Pdf
1.
Which characteristic makes organic peroxides especially hazardous?
A. High electrical conductivity
B. Low melting point
C. Ability to self-accelerate decomposition
D. High boiling point
Correct answer: C
Organic peroxides can decompose violently when heated, making SADT
a critical hazard.
2.
The SADT of an organic peroxide refers to:
A. Sudden Activation Degradation Time
B. Safe Ambient Delivery Temperature
C. Self-Accelerating Decomposition Temperature
D. Systemic Aerobic Decomposition Threshold
Correct answer: C
SADT is the temperature at which self-accelerated decomposition
begins.
,3.
Which FDNY permit is required for storage or handling of organic
peroxide quantities above exempt amounts?
A. C-42
B. P-12
C. H-20
D. S-98
Correct answer: C
H-20 is the FDNY Certificate of Fitness for Handling Organic Peroxides.
4.
Organic peroxides are chemically classified as:
A. Strong acids
B. Oxidizers with fuel and oxidizer in the same molecule
C. Strong bases
D. Radioactive materials
Correct answer: B
Organic peroxides contain both oxidizing and fuel components within
the molecule.
5.
Which factor increases the likelihood of decomposition?
A. Cooling
B. Ventilation
C. Heating
D. Dry storage
Correct answer: C
Heat accelerates decomposition reactions of organic peroxides.
,6.
Which statement best describes the storage temperature of most
organic peroxides?
A. Must always be above 100°F
B. Must always be below freezing
C. Must remain below their control temperature
D. Must remain exactly at room temperature
Correct answer: C
Control temperature keeps the peroxide stable and reduces
decomposition risk.
7.
Who must be present when organic peroxides exceeding permitted
quantities are handled?
A. Firefighter
B. Business owner
C. H-20 Certificate of Fitness holder
D. Any employee
Correct answer: C
The H-20 C of F holder ensures compliant handling and emergency
readiness.
8.
Organic peroxide storage areas must:
A. Always be in basements
B. Be kept locked and posted with hazard signs
C. Be kept unmonitored
D. Be shared with combustibles
, Correct answer: B
Restricted access and proper signage are required for safety.
9.
A container showing signs of bulging most likely indicates:
A. Lack of ventilation
B. Runaway decomposition
C. Static buildup
D. Water contamination
Correct answer: B
Bulging results from gas formation during decomposition.
10.
Which class of organic peroxide is the most hazardous?
A. Class I
B. Class II
C. Class III
D. Class V
Correct answer: A
Class I materials present the highest explosion hazard.
11.
Organic peroxides should never be stored near:
A. Refrigeration units
B. Water jugs
C. Heat sources
D. Empty containers
Correct answer: C
Heat increases risk of decomposition.
