FDNY C-14 EXAM QUESTIONS WITH CORRECT ANSWERS LATEST UPDATE 2025/2026
basement - Answers story partly below grade plane; 1/2 clear height
boiling point - Answers temp when liq vap pressure = 14.7 ATP/760 mmhg; unknown BP - 20%
evap point of distillation performed related to ASTM D 86
chemical - Answers element/compound/mixture of both
chemical name - Answers iupac - international union of pure and applied chemistry
close container - Answers container sealed to prevent liquid/vapor escaping or dust
combustible liquid - Answers liquid with closed-cup flash point at or above 100F
container - Answers solids/liquids - vessel 60 gallons or less for storage/transportation;
compressed gas - container should been designed for 1 ATM at 68˚F; pipes and piping systems
with solid or liquid hazardous materials/compressed gases will not be in containers
corrosive materials - Answers causes permanent injury to human skin at a rate by DOT
regulation; liquid corrodes 1/4 inch of steel or aluminum within a year
design pressure - Answers max gauge pressure to withstand safely under the temp and
conditions
dispensing - Answers pour/transfer material from container (can release products)
educational laboratory unit - Answers education purposes for students through 12th grade
excess flow control - Answers fail-safe system to shut off flow cause by pressurized piping
system rupture
exhausted enclosure - Answers device (typically a hood equipped w a fan) to capture and
exhaust workstation's mists; enclosure doesn't include room w ventilation
explosion - Answers expansion of gases, with either shock wave or disruption, of enclosed
material; explosion effects stem from
-chem changes
-physical changes (tank ruptures)
- atomic changes (nuclear fission or fusion)
chem changes - Answers -rapid oxidation
-deflaration
-detonation
,-decomposition of molecules or run away polymerization
face velocity - Answers rate of air moving into chem fume hood entrance or place (measured at
plane)
fire separation - Answers horizontal/vertical fire resistance-rated assembly of materials that
have protected opening and designed to restrict fire spread
flammable gas - Answers gaseous state at normal atm temp or pressure; can ignite or burn
when mixed with oxidizer
oxidizers - Answers -air
-oxygen
flammable liquid - Answers liquid w closed-cup flash point below 100˚F
flammable solid - Answers solid (other than blasting agent or explosive) either in elemental or
alloy form, causes fire through friction, absorption of moisture, spontaneous chem change, heat,
ignites below 212˚F
example of flammable solids - Answers -aluminum powder
-camphor
-magnesium
-matches
-naphthalene
-nitrocellulose
-phosphorous
-sulfur and picric acid (wetted w greater than 10% water)
flammable vapors - Answers concentration of flammable components greater than 25% of
lower flammable limit (LFL)
flash point - Answers min temp in F for liquid gives off sufficient vapor to create ignitable
mixture near surface in container --> will not sustain combustion
gas cabinet - Answers enclosed, noncombustible enclosure provides isolated environment for
compressed gas containers (has doors and access ports for exchanging containers and
accessing pressure-regulating controls)
general supervision - Answers supervision of someone w certificate of fitness for when
, someone else does duties from Figre Code; storage of hazardous material too
glove box - Answers sealed enclosure for items inside a box that need long gloves sealed to
ports in walls of enclosure
handling - Answers actions of affecting material
HAZARDOUS LOCATIONS CLASSIFICATIONS DESCRIPTIONS FOR CLASS 1
DIVISION 2 - Answers ignitable concentration present in atm under abnormal ops conditions
hazardous materials - Answers chems that are physical/health hazards defined in Fire Code
(either usable of wastes)
health hazard - Answers classification of chemical where statically evidence shows it causes
acute or chronic health effects in exposed person (toxic and corrosive)
impairment coordinator - Answers person designated by owner and responsible for proper
notification/safety precautions when fire protection system out of service
incompatible materials - Answers materials combined to be hazardous life/property
instructor - Answers teach in education/isntructional laboratories
laboratory chemical - Answers material w health, flammability or instability hazard ranking of 2,3,
or 4 (defined in NFPA 704)
laboratory unit - Answers enclosed space of min 1-hr fire rated construction for non-production
laboratory
lc50 - Answers "Lethal Concentration". The amount of gas, dust, or mists that it takes to kill 50%
of test animals in one dose. Duration of exposure varies. For fire code it is a one hour test
utilizing rats.
LD50 - Answers lethal dose - amt of solid/liquid to kill 50% of test animals w one dose; short-
term effects measured
lecture bottole - Answers 2 time 13 in small compressed gas container
liquid - Answers material w melting point =/> 68˚F, bp greater than 68˚F at 14.7 psia
LFL/LEL: lower flammable unit or lower explosive unit - Answers min concentration of vapor in
air
when flame occur in presence of ignition source
Material safety data sheet (SDS) - Answers document prepared for regulation of US DOL (29
CFR) ; or with OSHA plan; has health and physical hazard of materials + safe work practices and
basement - Answers story partly below grade plane; 1/2 clear height
boiling point - Answers temp when liq vap pressure = 14.7 ATP/760 mmhg; unknown BP - 20%
evap point of distillation performed related to ASTM D 86
chemical - Answers element/compound/mixture of both
chemical name - Answers iupac - international union of pure and applied chemistry
close container - Answers container sealed to prevent liquid/vapor escaping or dust
combustible liquid - Answers liquid with closed-cup flash point at or above 100F
container - Answers solids/liquids - vessel 60 gallons or less for storage/transportation;
compressed gas - container should been designed for 1 ATM at 68˚F; pipes and piping systems
with solid or liquid hazardous materials/compressed gases will not be in containers
corrosive materials - Answers causes permanent injury to human skin at a rate by DOT
regulation; liquid corrodes 1/4 inch of steel or aluminum within a year
design pressure - Answers max gauge pressure to withstand safely under the temp and
conditions
dispensing - Answers pour/transfer material from container (can release products)
educational laboratory unit - Answers education purposes for students through 12th grade
excess flow control - Answers fail-safe system to shut off flow cause by pressurized piping
system rupture
exhausted enclosure - Answers device (typically a hood equipped w a fan) to capture and
exhaust workstation's mists; enclosure doesn't include room w ventilation
explosion - Answers expansion of gases, with either shock wave or disruption, of enclosed
material; explosion effects stem from
-chem changes
-physical changes (tank ruptures)
- atomic changes (nuclear fission or fusion)
chem changes - Answers -rapid oxidation
-deflaration
-detonation
,-decomposition of molecules or run away polymerization
face velocity - Answers rate of air moving into chem fume hood entrance or place (measured at
plane)
fire separation - Answers horizontal/vertical fire resistance-rated assembly of materials that
have protected opening and designed to restrict fire spread
flammable gas - Answers gaseous state at normal atm temp or pressure; can ignite or burn
when mixed with oxidizer
oxidizers - Answers -air
-oxygen
flammable liquid - Answers liquid w closed-cup flash point below 100˚F
flammable solid - Answers solid (other than blasting agent or explosive) either in elemental or
alloy form, causes fire through friction, absorption of moisture, spontaneous chem change, heat,
ignites below 212˚F
example of flammable solids - Answers -aluminum powder
-camphor
-magnesium
-matches
-naphthalene
-nitrocellulose
-phosphorous
-sulfur and picric acid (wetted w greater than 10% water)
flammable vapors - Answers concentration of flammable components greater than 25% of
lower flammable limit (LFL)
flash point - Answers min temp in F for liquid gives off sufficient vapor to create ignitable
mixture near surface in container --> will not sustain combustion
gas cabinet - Answers enclosed, noncombustible enclosure provides isolated environment for
compressed gas containers (has doors and access ports for exchanging containers and
accessing pressure-regulating controls)
general supervision - Answers supervision of someone w certificate of fitness for when
, someone else does duties from Figre Code; storage of hazardous material too
glove box - Answers sealed enclosure for items inside a box that need long gloves sealed to
ports in walls of enclosure
handling - Answers actions of affecting material
HAZARDOUS LOCATIONS CLASSIFICATIONS DESCRIPTIONS FOR CLASS 1
DIVISION 2 - Answers ignitable concentration present in atm under abnormal ops conditions
hazardous materials - Answers chems that are physical/health hazards defined in Fire Code
(either usable of wastes)
health hazard - Answers classification of chemical where statically evidence shows it causes
acute or chronic health effects in exposed person (toxic and corrosive)
impairment coordinator - Answers person designated by owner and responsible for proper
notification/safety precautions when fire protection system out of service
incompatible materials - Answers materials combined to be hazardous life/property
instructor - Answers teach in education/isntructional laboratories
laboratory chemical - Answers material w health, flammability or instability hazard ranking of 2,3,
or 4 (defined in NFPA 704)
laboratory unit - Answers enclosed space of min 1-hr fire rated construction for non-production
laboratory
lc50 - Answers "Lethal Concentration". The amount of gas, dust, or mists that it takes to kill 50%
of test animals in one dose. Duration of exposure varies. For fire code it is a one hour test
utilizing rats.
LD50 - Answers lethal dose - amt of solid/liquid to kill 50% of test animals w one dose; short-
term effects measured
lecture bottole - Answers 2 time 13 in small compressed gas container
liquid - Answers material w melting point =/> 68˚F, bp greater than 68˚F at 14.7 psia
LFL/LEL: lower flammable unit or lower explosive unit - Answers min concentration of vapor in
air
when flame occur in presence of ignition source
Material safety data sheet (SDS) - Answers document prepared for regulation of US DOL (29
CFR) ; or with OSHA plan; has health and physical hazard of materials + safe work practices and
