HazMat Awareness and Operations Exam 2026/2027
NEWEST VERIFIED QUESTIONS WITH DETAILED
ANSWERS
• Placards -✓✓ Orange- explosive
Yellow- oxidizer
Red- flammable
White- health hazard
Blue- Water Reactive
Green- non flammable gas
• Military Marking (Placards) -✓✓ 1- mass detonation (octagon)
2- explosive with fragmentation hazards (plus sign with number in the middle)
3- Mass fire hazard (upside down triangle)
4- moderate fire hazards (Diamond)
• Hazard Classes -✓✓ 1- explosives
2- Gases
3- Flammable Liquid
4- Flammable Solids
5- Oxidizing substances and organic peroxides
6- "Toxic" substances/ infection
7- Radioactive materials
8- Corrosives
9- Misc
• Large Spill Vs Small Splill -✓✓ Refer to Green Tables
LARGE- More than 55 gallons
SMALL- 55 Gallons or Less
There are daytime/nigh-time considerations
• ERG TABLES OF INITIAL ISOLATION AND PROTECTIVE DISTANCES (GREEN
PAGES) -✓✓ TABLE 1
- Initial isolation and protective action distances
TABLE 2
- Water reactive materials which produce toxic gases
TABLE 3
- Initial isolation and protection action for distances for different quantities
• Container Breaches -✓✓ 1. Disintegration
2. Run-away cracking
, 3. Punctures
4. Splits or tears
• Ways containers release their contents (4) -✓✓ 1. Detonate.
2. Violent Rupture
3. Rapid Relief
4. Spill or leak
• Hemispheric Dispersion Pattern -✓✓ semi circle or dome like pattern of the airborne
hazardous material
- Gas or aerosol releases
• Cloud Dispersion Pattern -✓✓ Cloud pattern when the hazardous collectively rises
above the surface
• Shipping papers -✓✓ documents routinely carried aboard vehicles transporting
hazardous materials; ideally should identify specific substances and quantities carried;
also known as bills of lading.
• 1. Air Bill
2. Bill of Lading
3. Waybill/consist
4. Dangerous cargo manifest -✓✓ 1. Cockpit/Pilot
2. Vehicle Cab/Driver
3. Engine/Conductor
4. Bridge/Captain
• Sublime/Sublimation -✓✓ the change of state from a solid directly to a gas without
becoming a liquid in between
• Polymerization -✓✓ a chemical process that combines several monomers to form a
polymer or polymeric compound
• Radiation Protection Strategies -✓✓ Time, distance, shielding
• Miscibility/Immiscibility -✓✓ The degree or readiness with which two or more gases or
liquids are able to mix with or dissolve into each other
Miscible — Liquids that dissolve into each other
Immiscible — Liquids that do not readily dissolve into each other
• Simple Asphyxiates -✓✓ Exclude oxygen without significant toxic effects. Like carbon
dioxide
• Hazmat Incident Levels -✓✓ 1. Incident within the capabilities of first responders or
organization
NEWEST VERIFIED QUESTIONS WITH DETAILED
ANSWERS
• Placards -✓✓ Orange- explosive
Yellow- oxidizer
Red- flammable
White- health hazard
Blue- Water Reactive
Green- non flammable gas
• Military Marking (Placards) -✓✓ 1- mass detonation (octagon)
2- explosive with fragmentation hazards (plus sign with number in the middle)
3- Mass fire hazard (upside down triangle)
4- moderate fire hazards (Diamond)
• Hazard Classes -✓✓ 1- explosives
2- Gases
3- Flammable Liquid
4- Flammable Solids
5- Oxidizing substances and organic peroxides
6- "Toxic" substances/ infection
7- Radioactive materials
8- Corrosives
9- Misc
• Large Spill Vs Small Splill -✓✓ Refer to Green Tables
LARGE- More than 55 gallons
SMALL- 55 Gallons or Less
There are daytime/nigh-time considerations
• ERG TABLES OF INITIAL ISOLATION AND PROTECTIVE DISTANCES (GREEN
PAGES) -✓✓ TABLE 1
- Initial isolation and protective action distances
TABLE 2
- Water reactive materials which produce toxic gases
TABLE 3
- Initial isolation and protection action for distances for different quantities
• Container Breaches -✓✓ 1. Disintegration
2. Run-away cracking
, 3. Punctures
4. Splits or tears
• Ways containers release their contents (4) -✓✓ 1. Detonate.
2. Violent Rupture
3. Rapid Relief
4. Spill or leak
• Hemispheric Dispersion Pattern -✓✓ semi circle or dome like pattern of the airborne
hazardous material
- Gas or aerosol releases
• Cloud Dispersion Pattern -✓✓ Cloud pattern when the hazardous collectively rises
above the surface
• Shipping papers -✓✓ documents routinely carried aboard vehicles transporting
hazardous materials; ideally should identify specific substances and quantities carried;
also known as bills of lading.
• 1. Air Bill
2. Bill of Lading
3. Waybill/consist
4. Dangerous cargo manifest -✓✓ 1. Cockpit/Pilot
2. Vehicle Cab/Driver
3. Engine/Conductor
4. Bridge/Captain
• Sublime/Sublimation -✓✓ the change of state from a solid directly to a gas without
becoming a liquid in between
• Polymerization -✓✓ a chemical process that combines several monomers to form a
polymer or polymeric compound
• Radiation Protection Strategies -✓✓ Time, distance, shielding
• Miscibility/Immiscibility -✓✓ The degree or readiness with which two or more gases or
liquids are able to mix with or dissolve into each other
Miscible — Liquids that dissolve into each other
Immiscible — Liquids that do not readily dissolve into each other
• Simple Asphyxiates -✓✓ Exclude oxygen without significant toxic effects. Like carbon
dioxide
• Hazmat Incident Levels -✓✓ 1. Incident within the capabilities of first responders or
organization
