NEHA - Chapter 7 Exam Questions &
Answers (Grade A+)
Biological hazards -
correct answer ✅can cause infection or disease exposed persons,
plants, or animals, including microorganisms
What are the 5 biological hazard categories? -
correct answer ✅viral, rickettsial/chlamydial, bacterial, fungal, and
parasitic
Which type of places must give high priority to dealing with such
biological hazards -
correct answer ✅medical clinics, laboratories, and other similar
facilities
Radioactive materials can emit one or more of the three types of
harmful radiation: -
correct answer ✅alpha particles, beta particles, and gamma rays
What does ionizing radiation include? -
correct answer ✅alpha particles, beta particles, and gamma rays
Ionizing radiation -
correct answer ✅harm living organisms by imparting energy that
,NEHA - Chapter 7 Exam Questions &
Answers (Grade A+)
ionizes molecules in the cells and may cause cell dysfunction or
death
Majority of hazardous materials work done by most EHS relates to
_______ hazardous materials -
correct answer ✅chemically
Some properties of hazardous chemicals include: -
correct answer ✅solubility, density/specific gravity, vapor
pressure, vapor density, boiling point and condensation point, and
melting point/freezing point
Hazardous materials are categorized by their ______ and _______
properties -
correct answer ✅physical and chemical
Most substances have multiple hazards, which are? -
correct answer ✅both primary and secondary hazards
Should a EHS focus on the primary hazard of a material and
overlook the secondary hazard? -
correct answer ✅No, because it can be dangerous
,NEHA - Chapter 7 Exam Questions &
Answers (Grade A+)
What are the classes used by the US DOT for regulation of materials
transported in interstate commerce? -
correct answer ✅flammability/combustibility, corrosiveness, acids,
bases, reactivity, explosiveness, oxidizers, cryogenic liquids and
compressed gases, and toxic substances
Toxicology -
correct answer ✅the study of poisons
The term toxicology is subdivided into what three categories? -
correct answer ✅acute or chronic, reversible or irreversible, and
local or systematic
What are Mechanistic toxicologists concerned about? -
correct answer ✅identifying the mechanisms by which the toxic
substance produces its effects within the organism
What do Mechanistic toxicologist study? -
correct answer ✅the biochemical interactions of the foreign
substance with the body tissues and fluids
, NEHA - Chapter 7 Exam Questions &
Answers (Grade A+)
Why are Mechanistic toxicologists findings important? -
correct answer ✅because they are sound regulatory decision
making and to the development of antidotes for treating exposed
persons
What do Descriptive toxicologists do? -
correct answer ✅conduct tests to determine dose-response
information for specific organisms and routes of exposure
Descriptive toxicologists findings help describe what? -
correct answer ✅what effect (death, tumor formation, central
nervous system depression) will occur at a given exposure level
What do Diagnostic or clinical toxicologist do? -
correct answer ✅determine the probable toxic agent responsible
for manifested symptoms and may recommend antidotes or
treatment
What do Predictive toxicologists do? -
correct answer ✅utilize data generated by descriptive to predict
the effort of a given exposure on more or more organisms
Answers (Grade A+)
Biological hazards -
correct answer ✅can cause infection or disease exposed persons,
plants, or animals, including microorganisms
What are the 5 biological hazard categories? -
correct answer ✅viral, rickettsial/chlamydial, bacterial, fungal, and
parasitic
Which type of places must give high priority to dealing with such
biological hazards -
correct answer ✅medical clinics, laboratories, and other similar
facilities
Radioactive materials can emit one or more of the three types of
harmful radiation: -
correct answer ✅alpha particles, beta particles, and gamma rays
What does ionizing radiation include? -
correct answer ✅alpha particles, beta particles, and gamma rays
Ionizing radiation -
correct answer ✅harm living organisms by imparting energy that
,NEHA - Chapter 7 Exam Questions &
Answers (Grade A+)
ionizes molecules in the cells and may cause cell dysfunction or
death
Majority of hazardous materials work done by most EHS relates to
_______ hazardous materials -
correct answer ✅chemically
Some properties of hazardous chemicals include: -
correct answer ✅solubility, density/specific gravity, vapor
pressure, vapor density, boiling point and condensation point, and
melting point/freezing point
Hazardous materials are categorized by their ______ and _______
properties -
correct answer ✅physical and chemical
Most substances have multiple hazards, which are? -
correct answer ✅both primary and secondary hazards
Should a EHS focus on the primary hazard of a material and
overlook the secondary hazard? -
correct answer ✅No, because it can be dangerous
,NEHA - Chapter 7 Exam Questions &
Answers (Grade A+)
What are the classes used by the US DOT for regulation of materials
transported in interstate commerce? -
correct answer ✅flammability/combustibility, corrosiveness, acids,
bases, reactivity, explosiveness, oxidizers, cryogenic liquids and
compressed gases, and toxic substances
Toxicology -
correct answer ✅the study of poisons
The term toxicology is subdivided into what three categories? -
correct answer ✅acute or chronic, reversible or irreversible, and
local or systematic
What are Mechanistic toxicologists concerned about? -
correct answer ✅identifying the mechanisms by which the toxic
substance produces its effects within the organism
What do Mechanistic toxicologist study? -
correct answer ✅the biochemical interactions of the foreign
substance with the body tissues and fluids
, NEHA - Chapter 7 Exam Questions &
Answers (Grade A+)
Why are Mechanistic toxicologists findings important? -
correct answer ✅because they are sound regulatory decision
making and to the development of antidotes for treating exposed
persons
What do Descriptive toxicologists do? -
correct answer ✅conduct tests to determine dose-response
information for specific organisms and routes of exposure
Descriptive toxicologists findings help describe what? -
correct answer ✅what effect (death, tumor formation, central
nervous system depression) will occur at a given exposure level
What do Diagnostic or clinical toxicologist do? -
correct answer ✅determine the probable toxic agent responsible
for manifested symptoms and may recommend antidotes or
treatment
What do Predictive toxicologists do? -
correct answer ✅utilize data generated by descriptive to predict
the effort of a given exposure on more or more organisms
