Hazardous Materials Operations Midterm
Study Guide (MFRI) UPDATED Exam
Questions and CORRECT Answers
Hazardous material - CORRECT ANSWER - any substance or material that is capable of
posing an unreasonable risk to human health, safety, or the environment when transported in
commerce, used incorrectly, or not properly contained/stored
Class 1 - CORRECT ANSWER - explosives
Class 2 - CORRECT ANSWER - gases
Class 3 - CORRECT ANSWER - flammable liquids (and combustible liquids in U.S.)
Class 4 - CORRECT ANSWER - flammable solids, substances liable to spontaneous
combustion, substances which emit flammable gases upon contact with water
Class 5 - CORRECT ANSWER - oxidizing substances and organic peroxides
Class 6 - CORRECT ANSWER - toxic substances and infectious substances
Class 7 - CORRECT ANSWER - radioactive materials
Class 8 - CORRECT ANSWER - corrosive substances
Class 9 - CORRECT ANSWER - miscellaneous dangerous
, MC-306/DOT 406 - CORRECT ANSWER - non-pressurized, carries liquid food-grade
products, gasoline, and other flammable and combustible liquids
MC-307/DOT-407 - CORRECT ANSWER - chemical hauler for flammable liquids, mild
corrosives, and poisons
MC-312/DOT-412 - CORRECT ANSWER - corrosives cargo tank, carries sulfuric acid,
phosphoric acid, and sodium hydroxide, has rings around tank
MC-331 - CORRECT ANSWER - pressure cargo tank for ammonium, propane, Freon,
and butane
MC-338 - CORRECT ANSWER - cryogenic tank
Toxic agents - CORRECT ANSWER - sarin, mustard, marked in red
Harassing agents - CORRECT ANSWER - tear gas, white phosphorus, marked in yellow
Military class 1 orange octagon - CORRECT ANSWER - mass detonation hazards
Military class 2 orange X - CORRECT ANSWER - explosion with fragment hazards
Military class 3 orange triangle - CORRECT ANSWER - mass fire hazards
Military class 4 orange diamond - CORRECT ANSWER - moderate fire hazards
Bills of lading/freight bills - CORRECT ANSWER - road and highway transportation,
kept in cab of vehicle
Study Guide (MFRI) UPDATED Exam
Questions and CORRECT Answers
Hazardous material - CORRECT ANSWER - any substance or material that is capable of
posing an unreasonable risk to human health, safety, or the environment when transported in
commerce, used incorrectly, or not properly contained/stored
Class 1 - CORRECT ANSWER - explosives
Class 2 - CORRECT ANSWER - gases
Class 3 - CORRECT ANSWER - flammable liquids (and combustible liquids in U.S.)
Class 4 - CORRECT ANSWER - flammable solids, substances liable to spontaneous
combustion, substances which emit flammable gases upon contact with water
Class 5 - CORRECT ANSWER - oxidizing substances and organic peroxides
Class 6 - CORRECT ANSWER - toxic substances and infectious substances
Class 7 - CORRECT ANSWER - radioactive materials
Class 8 - CORRECT ANSWER - corrosive substances
Class 9 - CORRECT ANSWER - miscellaneous dangerous
, MC-306/DOT 406 - CORRECT ANSWER - non-pressurized, carries liquid food-grade
products, gasoline, and other flammable and combustible liquids
MC-307/DOT-407 - CORRECT ANSWER - chemical hauler for flammable liquids, mild
corrosives, and poisons
MC-312/DOT-412 - CORRECT ANSWER - corrosives cargo tank, carries sulfuric acid,
phosphoric acid, and sodium hydroxide, has rings around tank
MC-331 - CORRECT ANSWER - pressure cargo tank for ammonium, propane, Freon,
and butane
MC-338 - CORRECT ANSWER - cryogenic tank
Toxic agents - CORRECT ANSWER - sarin, mustard, marked in red
Harassing agents - CORRECT ANSWER - tear gas, white phosphorus, marked in yellow
Military class 1 orange octagon - CORRECT ANSWER - mass detonation hazards
Military class 2 orange X - CORRECT ANSWER - explosion with fragment hazards
Military class 3 orange triangle - CORRECT ANSWER - mass fire hazards
Military class 4 orange diamond - CORRECT ANSWER - moderate fire hazards
Bills of lading/freight bills - CORRECT ANSWER - road and highway transportation,
kept in cab of vehicle
