HAZMAT First Responder Operational
(FRO) QUESTIONS & ANSWERS
WITH COMPLETE SOLUTIONS
GRADED A+
QUESTIONS AND ANSWERS
Class 1 (Hazard Class). ANSWER --EXPLOSIVES-
Any substance, article or device designed to function by explosion (extremely rapid
release of gas and heat).
Class 2 (Hazard Class). ANSWER --GASES (FLAMMABLE or POISONOUS)-
Flammable Gas: Ignitable at low concentrations (<13%)
Compressed Gas: Shipped at > 41psia
Poisonous Gas: Toxic to humans of hazardous to health (or LC50 of not more than
5000 ml/m3 for laboratory animals). (i.e. toxic in low concentrations)
Class 3 (Hazard Class). ANSWER --FLAMMABLE AND COMBUSTIBLE
LIQUIDS-
Flammable Liquid: Flash point < 141 F
Combustible Liquid: Flash point > 141 F
Class 4 (Hazard Class). ANSWER --FLAMMABLE SOLIDS-
Explosives shipped with sufficient wetting agent to suppress explosive properties.
(or), substance that can ignite if in contact with air <5 minutes. (or), substance that
, gives off flammable or toxic vapors or is spontaneously flammable upon contact with
water.
Class 5 (Hazard Class). ANSWER --OXIDIZERS AND ORGANIC PEROXIDES-
A material that can cause or enhance the combustion of other materials (usually by
giving up oxygen)
Class 6 (Hazard Class). ANSWER --POISONOUS AND INFECTIOUS
MATERIAL-
Toxic to humans, hazardous to human health or presumed toxic to humans based
upon tests on laboratory animals.
Class 7 (Hazard Class). ANSWER --RADIOACTIVE MATERIALS-
Substance with specific activity > 0.002 micro-curies per gram.
Class 8 (Hazard Class). ANSWER --CORROSIVE MATERIALS-
Substance that causes visible destruction of irreversible alterations in human skin
tissue or a liquid that has a severe corrosion rate on steel or aluminum.
Class 9 (Hazard Class). ANSWER --MISC. HAZARDOUS MATERIALS-
Material with anesthetic, noxious or similar property that could cause extreme
annoyance or discomfort to flight crew and prevent performance of assigned duties.
Does not meet the definition of any other class..
None (Hazard Class). ANSWER -Other regulated material (ORM-D)
(FRO) QUESTIONS & ANSWERS
WITH COMPLETE SOLUTIONS
GRADED A+
QUESTIONS AND ANSWERS
Class 1 (Hazard Class). ANSWER --EXPLOSIVES-
Any substance, article or device designed to function by explosion (extremely rapid
release of gas and heat).
Class 2 (Hazard Class). ANSWER --GASES (FLAMMABLE or POISONOUS)-
Flammable Gas: Ignitable at low concentrations (<13%)
Compressed Gas: Shipped at > 41psia
Poisonous Gas: Toxic to humans of hazardous to health (or LC50 of not more than
5000 ml/m3 for laboratory animals). (i.e. toxic in low concentrations)
Class 3 (Hazard Class). ANSWER --FLAMMABLE AND COMBUSTIBLE
LIQUIDS-
Flammable Liquid: Flash point < 141 F
Combustible Liquid: Flash point > 141 F
Class 4 (Hazard Class). ANSWER --FLAMMABLE SOLIDS-
Explosives shipped with sufficient wetting agent to suppress explosive properties.
(or), substance that can ignite if in contact with air <5 minutes. (or), substance that
, gives off flammable or toxic vapors or is spontaneously flammable upon contact with
water.
Class 5 (Hazard Class). ANSWER --OXIDIZERS AND ORGANIC PEROXIDES-
A material that can cause or enhance the combustion of other materials (usually by
giving up oxygen)
Class 6 (Hazard Class). ANSWER --POISONOUS AND INFECTIOUS
MATERIAL-
Toxic to humans, hazardous to human health or presumed toxic to humans based
upon tests on laboratory animals.
Class 7 (Hazard Class). ANSWER --RADIOACTIVE MATERIALS-
Substance with specific activity > 0.002 micro-curies per gram.
Class 8 (Hazard Class). ANSWER --CORROSIVE MATERIALS-
Substance that causes visible destruction of irreversible alterations in human skin
tissue or a liquid that has a severe corrosion rate on steel or aluminum.
Class 9 (Hazard Class). ANSWER --MISC. HAZARDOUS MATERIALS-
Material with anesthetic, noxious or similar property that could cause extreme
annoyance or discomfort to flight crew and prevent performance of assigned duties.
Does not meet the definition of any other class..
None (Hazard Class). ANSWER -Other regulated material (ORM-D)
