HAZMAT OPERATIONS 2026 STUDY GUIDE QUESTIONS
AND ANSWERS GUARANTEE A+
✔✔What is corrosivity? - ✔✔A measure of a substance's tendency to deteriorate in the
presence of another substance or in a particular environment
✔✔What pH levels are acidic? - ✔✔pH values less than 7
✔✔What is neutral? - ✔✔pH value equal to 7
✔✔What is base? - ✔✔pH value above 7
✔✔What pH level is considered a strong acid? - ✔✔pH values equal to or less than 2.0
✔✔What pH level is considered a strong base? - ✔✔pH values equal to or greater than
12.5
✔✔What is Flammable (Explosive )Range? - ✔✔The difference between the upper and
lower flammable limits
✔✔What is Lower Explosive Range (LEL)? - ✔✔The minimum concentration of vapor to
air below which a flame will not propagate in the presence of an ignition " Too Lean to
Burn"
✔✔What is Upper Explosive Range (UEL)? - ✔✔The maximum vapor to air
concentration above which a flame will not propagate in the presence of an ignition
source "Too Rich to Burn"
✔✔What is Flash Point? - ✔✔The temperature at which a liquid will give off sufficient
vapors that will ignite readily given an ignition source
✔✔What is ignition temperature/ autoignition temperature? - ✔✔The minimum
temperature required to cause self-sustained combustion in the absence of any source
of ignition
✔✔What is particle size? - ✔✔Refers to solids, and is expressed in microns or percent
passing through a meshed screen
✔✔What is persistence? - ✔✔Refers to the materials ability to stay within the area of
release for a long periods of time
✔✔What are the 3 physical states of a material? - ✔✔1. Solid
2. Liquid
3. Gas
, ✔✔What are the 4 types of Ionizing Radiation? - ✔✔1. Alpha
2. Beta
3. Gamma
4. Neutron
✔✔What is the definition of Ionizing Radiation? - ✔✔Consists of particles or high-energy
rays
✔✔What type of Ionizing Radiation is not commonly encountered in transportation
situations? - ✔✔Neutron Radiation
✔✔What are some types of Non-Ionizing Radiation? - ✔✔1. Ultraviolet
2. Visible Light
3. Sound Waves
4. Magnetic Fields
✔✔What are some significant impacts of Non-Ionizing Radiation? - ✔✔1. Ultraviolet
radiation exposure causes sunburn
2. Causes genetic damage to skin cells and result in skin cancer
3. Beyond the control of hazardous materials/WMD responders
✔✔What is Specific Gravity? - ✔✔Ratio of the weight of a liquid or solid as compared to
an equal amount of water.
✔✔What is the Specific Gravity of Water? - ✔✔1.0
✔✔What are some problems with Toxic Products of Combustion? - ✔✔1. Combustion
may alter the original products
2. Smoke, steam, and runoff from fire and firefighting operations may contaminate a
larger area
✔✔What is Vapor Density? - ✔✔Ratio of the weight of a vapor as compared to air
✔✔What is the Vapor Density of Air? - ✔✔1.0
✔✔What is Vapor Pressure? - ✔✔The pressure at any given temperature at which the
vapor and liquid phases of the substance are in equilibrium in a closed container.
✔✔What is water Solubility? - ✔✔The ability of a material to blend uniformly (solubility)
with another
✔✔What are some types of Solubility? - ✔✔1. Solid in Liquid
2. Liquid in Liquid
AND ANSWERS GUARANTEE A+
✔✔What is corrosivity? - ✔✔A measure of a substance's tendency to deteriorate in the
presence of another substance or in a particular environment
✔✔What pH levels are acidic? - ✔✔pH values less than 7
✔✔What is neutral? - ✔✔pH value equal to 7
✔✔What is base? - ✔✔pH value above 7
✔✔What pH level is considered a strong acid? - ✔✔pH values equal to or less than 2.0
✔✔What pH level is considered a strong base? - ✔✔pH values equal to or greater than
12.5
✔✔What is Flammable (Explosive )Range? - ✔✔The difference between the upper and
lower flammable limits
✔✔What is Lower Explosive Range (LEL)? - ✔✔The minimum concentration of vapor to
air below which a flame will not propagate in the presence of an ignition " Too Lean to
Burn"
✔✔What is Upper Explosive Range (UEL)? - ✔✔The maximum vapor to air
concentration above which a flame will not propagate in the presence of an ignition
source "Too Rich to Burn"
✔✔What is Flash Point? - ✔✔The temperature at which a liquid will give off sufficient
vapors that will ignite readily given an ignition source
✔✔What is ignition temperature/ autoignition temperature? - ✔✔The minimum
temperature required to cause self-sustained combustion in the absence of any source
of ignition
✔✔What is particle size? - ✔✔Refers to solids, and is expressed in microns or percent
passing through a meshed screen
✔✔What is persistence? - ✔✔Refers to the materials ability to stay within the area of
release for a long periods of time
✔✔What are the 3 physical states of a material? - ✔✔1. Solid
2. Liquid
3. Gas
, ✔✔What are the 4 types of Ionizing Radiation? - ✔✔1. Alpha
2. Beta
3. Gamma
4. Neutron
✔✔What is the definition of Ionizing Radiation? - ✔✔Consists of particles or high-energy
rays
✔✔What type of Ionizing Radiation is not commonly encountered in transportation
situations? - ✔✔Neutron Radiation
✔✔What are some types of Non-Ionizing Radiation? - ✔✔1. Ultraviolet
2. Visible Light
3. Sound Waves
4. Magnetic Fields
✔✔What are some significant impacts of Non-Ionizing Radiation? - ✔✔1. Ultraviolet
radiation exposure causes sunburn
2. Causes genetic damage to skin cells and result in skin cancer
3. Beyond the control of hazardous materials/WMD responders
✔✔What is Specific Gravity? - ✔✔Ratio of the weight of a liquid or solid as compared to
an equal amount of water.
✔✔What is the Specific Gravity of Water? - ✔✔1.0
✔✔What are some problems with Toxic Products of Combustion? - ✔✔1. Combustion
may alter the original products
2. Smoke, steam, and runoff from fire and firefighting operations may contaminate a
larger area
✔✔What is Vapor Density? - ✔✔Ratio of the weight of a vapor as compared to air
✔✔What is the Vapor Density of Air? - ✔✔1.0
✔✔What is Vapor Pressure? - ✔✔The pressure at any given temperature at which the
vapor and liquid phases of the substance are in equilibrium in a closed container.
✔✔What is water Solubility? - ✔✔The ability of a material to blend uniformly (solubility)
with another
✔✔What are some types of Solubility? - ✔✔1. Solid in Liquid
2. Liquid in Liquid
