HAZWOPER 40 FINAL EXAM 50
CERTIFICATION EVALUATION TEST PAPER 2026
COMPLETE STUDY QUESTIONS WITH
CORRECT ANSWERS
◉ decontamination procedures must provide an organized process
by which levels of contamination are _______ Answer: reduced
◉ all decontamination workers are in a contaminated area and must
be decontaminated before entering the ____________ Answer: clean
support zone
◉ what are tiny particles from heating, volatilization, and
condensation of metals? Answer: fumes
◉ what are tiny particles of solids? Answer: dusts
◉ what are chemicals that deprive the victim's body tissues of
oxygen? Answer: asphyixiants
◉ the physical forms in which chemicals are encountered at a waste
site play a large role in the routes of entry into the body Answer:
true
,◉ What is defined as how the body handles poisons? Answer:
Toxicokinetics
◉ What are the four ways toxic chemicals can enter the body?
Answer: -the most common toxic dose in the work environment
comes through breathing, or inhalation
-the next most common route of entry is through eye and/or skin
contact
-the most common route in the home is swallowing or ingestion
-a route that is more accidental is injection
◉ what is defined as a one time or an infrequent exposure to a high
concentration of a substance? Answer: chronic
◉ personnel that handle chemicals need to follow a hygiene
program that will prevent the accidental ingestion of hazardous
material Answer: true
◉ what is considered to be a synergistic effect? Answer: (2+2 = 6)
◉ what is considered to be an additive effect? Answer: (2+2 = 4)
,◉ chronic or delated effects rarely occur a long time after exposure
Answer: false
◉ what are the two main types of materials that are capable of skin
and metal destruction? Answer: acids and bases
◉ what information must the safety data sheet contain? Answer: -
product identification and manufacturers name
-hazardous ingredients
-fire and explosion hazard data
◉ what information must a label contain? Answer: -standardized
signal words
-pictogram
-hazard statement for each class and category
-precautionary statements
◉ local fire codes generall require facilities to post NFPA signs on
buildings and doors to warn of the hazardous chemicals within
Answer: true
◉ what is the first thing you should do if a chemical enters your
eyes? Answer: flush the eyes with water
, ◉ if exposed to acids or bases, what factors into the extend of the
injury? Answer: -concentration of the acid or base
-quantity of acid or base involved
-body area affected
-duration of the contact
◉ what is the rule of 9? Answer: a chemical burn is 9 times as
damaging as a thermal burn
◉ in an acid-base neutralization reaction, it is not important to
reduce the possibilities of an uncontrolled reaction Answer: false
◉ what is a colorless, vicous fluid that is relatively insoluble in water
and can withstand high temperatures without degradation? Answer:
PCB mixture
◉ what action with different types of materials is a potential hazard
at any waste site? Answer: mixing
◉ what can happen if hydrogen gas is present with an ignition
source? Answer: explosion
CERTIFICATION EVALUATION TEST PAPER 2026
COMPLETE STUDY QUESTIONS WITH
CORRECT ANSWERS
◉ decontamination procedures must provide an organized process
by which levels of contamination are _______ Answer: reduced
◉ all decontamination workers are in a contaminated area and must
be decontaminated before entering the ____________ Answer: clean
support zone
◉ what are tiny particles from heating, volatilization, and
condensation of metals? Answer: fumes
◉ what are tiny particles of solids? Answer: dusts
◉ what are chemicals that deprive the victim's body tissues of
oxygen? Answer: asphyixiants
◉ the physical forms in which chemicals are encountered at a waste
site play a large role in the routes of entry into the body Answer:
true
,◉ What is defined as how the body handles poisons? Answer:
Toxicokinetics
◉ What are the four ways toxic chemicals can enter the body?
Answer: -the most common toxic dose in the work environment
comes through breathing, or inhalation
-the next most common route of entry is through eye and/or skin
contact
-the most common route in the home is swallowing or ingestion
-a route that is more accidental is injection
◉ what is defined as a one time or an infrequent exposure to a high
concentration of a substance? Answer: chronic
◉ personnel that handle chemicals need to follow a hygiene
program that will prevent the accidental ingestion of hazardous
material Answer: true
◉ what is considered to be a synergistic effect? Answer: (2+2 = 6)
◉ what is considered to be an additive effect? Answer: (2+2 = 4)
,◉ chronic or delated effects rarely occur a long time after exposure
Answer: false
◉ what are the two main types of materials that are capable of skin
and metal destruction? Answer: acids and bases
◉ what information must the safety data sheet contain? Answer: -
product identification and manufacturers name
-hazardous ingredients
-fire and explosion hazard data
◉ what information must a label contain? Answer: -standardized
signal words
-pictogram
-hazard statement for each class and category
-precautionary statements
◉ local fire codes generall require facilities to post NFPA signs on
buildings and doors to warn of the hazardous chemicals within
Answer: true
◉ what is the first thing you should do if a chemical enters your
eyes? Answer: flush the eyes with water
, ◉ if exposed to acids or bases, what factors into the extend of the
injury? Answer: -concentration of the acid or base
-quantity of acid or base involved
-body area affected
-duration of the contact
◉ what is the rule of 9? Answer: a chemical burn is 9 times as
damaging as a thermal burn
◉ in an acid-base neutralization reaction, it is not important to
reduce the possibilities of an uncontrolled reaction Answer: false
◉ what is a colorless, vicous fluid that is relatively insoluble in water
and can withstand high temperatures without degradation? Answer:
PCB mixture
◉ what action with different types of materials is a potential hazard
at any waste site? Answer: mixing
◉ what can happen if hydrogen gas is present with an ignition
source? Answer: explosion
