HAZMAT OPERATIONS 2026 CORE EXAM TEST QUESTIONS
AND ANSWERS GUARANTEE A+
What does collecting the information allows the operations level responder? -
✔✔determine the defensive options that can be performed safely, given the personnel
and equipment available
how are haz mat classified? - ✔✔According to their primary danger and assigned
standardized symbols to ID the class/division
Class 1 - ✔✔Explosive
Class 1 Major Hazard - ✔✔Explosion
Class 1 Definition - ✔✔any substance or article, including a device that is designed to
function by explosion or that by chemical reaction within itself, is able to function by
explosion
Division 1.1 - ✔✔Mass Explosion hazard - mass explosion is one that affects almost the
entire load instantly
example - black powder, dynamite, TNT
Division 1.2 - ✔✔Projection hazard - but not mass explosion
example - aerial flares, detonation cord, power device cartridges
Division 1.3 - ✔✔Fire hazard, minor blast hazard , minor projection hazard, NO mass
explosion
example - liquid fueled rocket motors, propellant explosive
Division 1.4 - ✔✔Minor explosion hazard (no more than 25 grams of detonating
material)
example - practice ammo, signal cartridges
Division 1.5 - ✔✔Very insensitive explosive with mass explosion hazard - under normal
conditions
example - prilled ammonium nitrate fertilizers, fuel oil mix
Division 1.6 - ✔✔Extremely insensitive no mass explosive hazard
example: squib device ( small explosive with considerably less explosive power
Class 1 placard - ✔✔orange placard with bursting ball
Class 2 - ✔✔Compressed gas
,Class 2 Major Hazard - ✔✔BLEVE
What is BLEVE - ✔✔Boiling Liquid expanding vapor explosion
Division 2.1 - ✔✔Flammable Gas - boiling point of 68F or less and that is ignitable when
a mixture of 13% or less by volume with air
ex - propane, methyl chloride
Division 2.1 placard - ✔✔red background with white flame
Division 2.2 - ✔✔non flammable, non poisonous gas -
ex - carbon dioxide, compressed nitrogen, anhydrous ammonia
Division 2.2 placard - ✔✔Green Bakground, white cilinder
what is a cryogenic and what division - ✔✔refrigerated liquefied gas having a boiling
point colder than -130F
division 2.2
Division 2.3 - ✔✔Poisonous Gas - gasses that vaporized easily and that are very
dangerous to life, even in small amounts. Is known to be so toxic to humans as to pose
a hazard to health during transportation
ex - chlorine, methyl bromide, arsine
division 2.3 placard - ✔✔with background, skull and crossbones
Class 3 - ✔✔flammable / combustible liquids
Flammable liquid - ✔✔burns readily, have a flash point of not more than 140F
ex - acetone, gasoline, methyl alcohol, toluene
combustible liquid - ✔✔any liquid that does not meet the definition of any other hazard
class and that has a flash point above 140F
ex - mineral oil, peanut oil, No.6 fuel oil, pine oil, plastic solvent
Class 4 - ✔✔Flammable solid
Class 4 Major hazard - ✔✔rapid combustion that releases mass quantities of smoke
Class 4.1 - ✔✔Flammable solid - desentized explosive, self reactive materials
(thermally unstable), readily combustible solids - may cause a fire through friction and
any metal
ex - magnesium
, Class 4.2 - ✔✔Spontaneously Combustible material - pyrophoric material (even in small
quantities and without external ignition source, can ignite within 5 minutes after coming
in contact with air), self heating material - when in contact with air and without an energy
supply is liable to self heat
ex- charcoal briquettes
Class 4.3 - ✔✔Dangerous when wet - when in contact with water is liable to become
spontaneously flammable or to give off flammable or toxic gas
ex - magnesium powder, sodium hydride
Class 4.1 placard - ✔✔red and white stripes, black flame and word flammable solid
class 4.2 placard - ✔✔white top, red bottom with words: spontaneously combustible
class 4.3 placard - ✔✔blue white flame and words dangerous when wet
Class 5 - ✔✔oxidizers and organic peroxide
Class 5.1 major hazard - ✔✔support combustion
class 5.2 major hazard - ✔✔unstable
class 5.1 - ✔✔Oxidizer - material that yielding oxygen cause or enhance combustion in
other materials
ex - ammonium nitrate, calcium hyphochlorite
class 5.2 - ✔✔organic peroxide - any organic compound containing oxygen in the
bivalent structure that may be considered a derivate of hydrogen peroxide
Class 5.2 Types - ✔✔type A - Can detonate or deflagrate rapidly as packaged for
transport, forbidden to transport
type g, will not detonate, will not do anything is thermaly stable and desensitized.
Class 6 - ✔✔poison
class 6 major hazard - ✔✔toxicity, infectious
class 6.1 - ✔✔poisonous materials - other than gas that its toxic to humans as to afford
a hazard to health during transport
ex - tear gas, arsenic compund
Class 5.1 placard - ✔✔yellow with flaming O
AND ANSWERS GUARANTEE A+
What does collecting the information allows the operations level responder? -
✔✔determine the defensive options that can be performed safely, given the personnel
and equipment available
how are haz mat classified? - ✔✔According to their primary danger and assigned
standardized symbols to ID the class/division
Class 1 - ✔✔Explosive
Class 1 Major Hazard - ✔✔Explosion
Class 1 Definition - ✔✔any substance or article, including a device that is designed to
function by explosion or that by chemical reaction within itself, is able to function by
explosion
Division 1.1 - ✔✔Mass Explosion hazard - mass explosion is one that affects almost the
entire load instantly
example - black powder, dynamite, TNT
Division 1.2 - ✔✔Projection hazard - but not mass explosion
example - aerial flares, detonation cord, power device cartridges
Division 1.3 - ✔✔Fire hazard, minor blast hazard , minor projection hazard, NO mass
explosion
example - liquid fueled rocket motors, propellant explosive
Division 1.4 - ✔✔Minor explosion hazard (no more than 25 grams of detonating
material)
example - practice ammo, signal cartridges
Division 1.5 - ✔✔Very insensitive explosive with mass explosion hazard - under normal
conditions
example - prilled ammonium nitrate fertilizers, fuel oil mix
Division 1.6 - ✔✔Extremely insensitive no mass explosive hazard
example: squib device ( small explosive with considerably less explosive power
Class 1 placard - ✔✔orange placard with bursting ball
Class 2 - ✔✔Compressed gas
,Class 2 Major Hazard - ✔✔BLEVE
What is BLEVE - ✔✔Boiling Liquid expanding vapor explosion
Division 2.1 - ✔✔Flammable Gas - boiling point of 68F or less and that is ignitable when
a mixture of 13% or less by volume with air
ex - propane, methyl chloride
Division 2.1 placard - ✔✔red background with white flame
Division 2.2 - ✔✔non flammable, non poisonous gas -
ex - carbon dioxide, compressed nitrogen, anhydrous ammonia
Division 2.2 placard - ✔✔Green Bakground, white cilinder
what is a cryogenic and what division - ✔✔refrigerated liquefied gas having a boiling
point colder than -130F
division 2.2
Division 2.3 - ✔✔Poisonous Gas - gasses that vaporized easily and that are very
dangerous to life, even in small amounts. Is known to be so toxic to humans as to pose
a hazard to health during transportation
ex - chlorine, methyl bromide, arsine
division 2.3 placard - ✔✔with background, skull and crossbones
Class 3 - ✔✔flammable / combustible liquids
Flammable liquid - ✔✔burns readily, have a flash point of not more than 140F
ex - acetone, gasoline, methyl alcohol, toluene
combustible liquid - ✔✔any liquid that does not meet the definition of any other hazard
class and that has a flash point above 140F
ex - mineral oil, peanut oil, No.6 fuel oil, pine oil, plastic solvent
Class 4 - ✔✔Flammable solid
Class 4 Major hazard - ✔✔rapid combustion that releases mass quantities of smoke
Class 4.1 - ✔✔Flammable solid - desentized explosive, self reactive materials
(thermally unstable), readily combustible solids - may cause a fire through friction and
any metal
ex - magnesium
, Class 4.2 - ✔✔Spontaneously Combustible material - pyrophoric material (even in small
quantities and without external ignition source, can ignite within 5 minutes after coming
in contact with air), self heating material - when in contact with air and without an energy
supply is liable to self heat
ex- charcoal briquettes
Class 4.3 - ✔✔Dangerous when wet - when in contact with water is liable to become
spontaneously flammable or to give off flammable or toxic gas
ex - magnesium powder, sodium hydride
Class 4.1 placard - ✔✔red and white stripes, black flame and word flammable solid
class 4.2 placard - ✔✔white top, red bottom with words: spontaneously combustible
class 4.3 placard - ✔✔blue white flame and words dangerous when wet
Class 5 - ✔✔oxidizers and organic peroxide
Class 5.1 major hazard - ✔✔support combustion
class 5.2 major hazard - ✔✔unstable
class 5.1 - ✔✔Oxidizer - material that yielding oxygen cause or enhance combustion in
other materials
ex - ammonium nitrate, calcium hyphochlorite
class 5.2 - ✔✔organic peroxide - any organic compound containing oxygen in the
bivalent structure that may be considered a derivate of hydrogen peroxide
Class 5.2 Types - ✔✔type A - Can detonate or deflagrate rapidly as packaged for
transport, forbidden to transport
type g, will not detonate, will not do anything is thermaly stable and desensitized.
Class 6 - ✔✔poison
class 6 major hazard - ✔✔toxicity, infectious
class 6.1 - ✔✔poisonous materials - other than gas that its toxic to humans as to afford
a hazard to health during transport
ex - tear gas, arsenic compund
Class 5.1 placard - ✔✔yellow with flaming O
