Page 1 of 34
20 August 2026
Toxicology Test Exam1 300 comprehensive questions
| FREQUENTLY MOST TESTED QUESTIONS AND VERIFIED
SOLUTIONS/GET IT 100% ACCURATE!! 2026!!
Who stated, "All substances are poisons; there is none that is not a poison. The right dose
differentiates a poison from a remedy." - correct answer-Paracelsus (1493-1541)
Who wrote Silent Spring, published in 1962 which led to the creation of the EPA (1970)
and the ban of insecticide DDT for environmental and health concerns in 1972? - correct
answer-Rachel Carson (1907-1964)
What is an OEL? - correct answer-An Occupational Exposure Limit (OEL) is an upper limit on the
acceptable concentration of a hazardous substance in workplace for a particular material or class of
materials.
Which agency promulgates legally enforceable standards known as Permissible Exposure
Limits (PELs)? - correct answer-Occupational Safety and Health Administration (OSHA) under the
Department of Labor
Which agency publishes recommended exposure limits that are frequently updated and are
generally more stringent than PELs? - correct answer-NIOSH under the CDC
Which organization publishes occupational exposure limits (OELs) for chemical and
physical agents, which are guidelines and not enforceable standards? - correct answer-The
American Conference of Governmental Industrial Hygienists (a trade organization).
What disease can be caused by the following occupational toxicants: Toluene diisocyanate,
alphaamylase, animal urine proteins? - correct answer-Asthma
What disease can be caused by the following occupational toxicants: Endotoxin, peptidoglycan,
glucan, viruses? - correct answer-Upper Respiratory Tract Inflammation
What disease can be caused by the following occupational toxicant: Vinyl chloride? - correct
answerHepatic hemanglosarcoma
, Page 2 of 34
20 August 2026
What disease can be caused by the following occupational toxicants: Asbestos, arsenic, radon,
bis(chloromethyl) ether? - correct answer-Mesothelioma, lung carcinoma
What disease can be caused by the following occupational toxicants: Polycyclic aromatic
hydrocarbons, UV irratdaition? - correct answer-Skin cancer
What disease can be caused by the following occupational toxicants: TCDD, Polychlorinated
biphenyls (PCBs)? - correct answer-Chloracne
What disease can be caused by the following occupational toxicants: Carbon monoxide, carbon
disulfide? - correct answer-Parkinsonism
What disease can be caused by the following occupational toxicants: Vinyl chloride, silica? - correct
answer-Autoimmune Disease
What disease can be caused by the following occupational toxicants: Paraquate, 1,4dichlorobenzene,
mercuric chloride? - correct answer-Nephropathy
What disease can be caused by the following occupational toxicants: Acetone, Toluene, Methylene
chloride, trichloroethylene? - correct answer-Arrhythmias
What disease can be caused by the following occupational toxicants: Nitroglycerine, ethylene glycol
dinitrate? - correct answer-Systemic hypotension
What disease can be caused by the following occupational toxicants: Carbon tetrachloride, toluene?
- correct answer-Fatty liver (steatosis)
What disease can be caused by the following occupational toxicants: Arsenic, trichloroethylene? -
correct answer-Cirrhosis
What disease can be caused by the following occupational toxicant: Legionella pneumophlia? -
correct answer-Legionellosis
What disease can be caused by the following occupational toxicant: Mycobaterium tuberculosis
hominis? - correct answer-Tuberculosis
, Page 3 of 34
20 August 2026
What industries and occupations may expose workers to asbestos? - correct answer-Miners,
abatement workers, construction workers, sheet metal workers, steam fitters, shipyard workers.
What industries and occupations may expose workers to Crystalline silica? - correct answer-Stone
and ceramics industry, foundries, construction, abrasives manufacturing
What industries and occupations may expose workers to arsenic? - correct answer-Miners,
nonferrous metal smelting, arsenical pesticide manufaturers and applicators.
What industries and occupations may expose workers to cadmium? - correct answer-Cadmium
smelting, battery production, dyes and pigment making, electroplating
What industries and occupations may expose workers to Hexavalent chromium compounds and
nickel compounds? - correct answer-Chromate production plants, dye and pigment making, welders,
tanners, nickel smelting, welding
What industries and occupations may expose workers to Benzene? - correct answer-Refineries, shoe
industry; chemical, pharmaceutical, and rubber industry; printing industry
What industries and occupations may expose workers to Vinyl chloride? - correct answer-Plastics
industry, production of polyvinyl chloride products and copolymers
What industries and occupations may expose workers to aflatoxin? - correct answer-Animal feed
industry, grain handling and processing
What is the difference between exposure monitoring and biological monitoring? - correct
answerExposure monitoring: is used to assess airborne exposures: unbiased measures of exposure,
repeated random sampling is the best approach, and it it used for assessing exposures to groups
rather than individual is more efficient.
Biological monitoring: consists of measurements of toxicants, their metabolites or expected
molecular signatures in specimens from humans or animals including urine, feces, exhaled breath,
hair, fingernails or toenails, bronchial lavage, breast milk, and adipose tissue. **Accounts for all
exposures by all routes for the assessed analytes.
, Page 4 of 34
20 August 2026
What is the most visible form of air pollution? - correct answer-Smoke
Which class of air quality standards set maximum atmospheric concentrations for specific
pollutants? - correct answer-US National Ambient Air Quality Standards and EU Air Quality Directive
Which class of air quality standards take the form of a scale with various thresholds, which is used to
communicate to the public the relative risk of outdoor activity. The scale may or may not distinguish
between different pollutants? - correct answer-North American Air Quality Index
What are the 7 major air pollutants? - correct answer-1. *Carbon monoxide (52%)
2. *Sulfur oxides
3. Hydrocarbons
4. *Particular matter ("a preeminent air pollutant")
5. *Nitrogen oxides
6. *Lead
7. *Ground-level ozone
* = Criteria Air Pollutant
What are the greenhouse gasses? - correct answer-Water vapor and droplets (66-85%)
Carbon dioxide (9-26%)
Methane (4-9%)
Ozone (3-7%)
***Nitrogen and Oxygen are NOT greenhouse gases.
What are 4 major sources of air pollutants? - correct answer-1. Fuels used in electric power plants
and other industrial processes.
2. Car exhausts
3. Waste/Refuse Disposal
4. Gasses emitted by livestock and swamps
20 August 2026
Toxicology Test Exam1 300 comprehensive questions
| FREQUENTLY MOST TESTED QUESTIONS AND VERIFIED
SOLUTIONS/GET IT 100% ACCURATE!! 2026!!
Who stated, "All substances are poisons; there is none that is not a poison. The right dose
differentiates a poison from a remedy." - correct answer-Paracelsus (1493-1541)
Who wrote Silent Spring, published in 1962 which led to the creation of the EPA (1970)
and the ban of insecticide DDT for environmental and health concerns in 1972? - correct
answer-Rachel Carson (1907-1964)
What is an OEL? - correct answer-An Occupational Exposure Limit (OEL) is an upper limit on the
acceptable concentration of a hazardous substance in workplace for a particular material or class of
materials.
Which agency promulgates legally enforceable standards known as Permissible Exposure
Limits (PELs)? - correct answer-Occupational Safety and Health Administration (OSHA) under the
Department of Labor
Which agency publishes recommended exposure limits that are frequently updated and are
generally more stringent than PELs? - correct answer-NIOSH under the CDC
Which organization publishes occupational exposure limits (OELs) for chemical and
physical agents, which are guidelines and not enforceable standards? - correct answer-The
American Conference of Governmental Industrial Hygienists (a trade organization).
What disease can be caused by the following occupational toxicants: Toluene diisocyanate,
alphaamylase, animal urine proteins? - correct answer-Asthma
What disease can be caused by the following occupational toxicants: Endotoxin, peptidoglycan,
glucan, viruses? - correct answer-Upper Respiratory Tract Inflammation
What disease can be caused by the following occupational toxicant: Vinyl chloride? - correct
answerHepatic hemanglosarcoma
, Page 2 of 34
20 August 2026
What disease can be caused by the following occupational toxicants: Asbestos, arsenic, radon,
bis(chloromethyl) ether? - correct answer-Mesothelioma, lung carcinoma
What disease can be caused by the following occupational toxicants: Polycyclic aromatic
hydrocarbons, UV irratdaition? - correct answer-Skin cancer
What disease can be caused by the following occupational toxicants: TCDD, Polychlorinated
biphenyls (PCBs)? - correct answer-Chloracne
What disease can be caused by the following occupational toxicants: Carbon monoxide, carbon
disulfide? - correct answer-Parkinsonism
What disease can be caused by the following occupational toxicants: Vinyl chloride, silica? - correct
answer-Autoimmune Disease
What disease can be caused by the following occupational toxicants: Paraquate, 1,4dichlorobenzene,
mercuric chloride? - correct answer-Nephropathy
What disease can be caused by the following occupational toxicants: Acetone, Toluene, Methylene
chloride, trichloroethylene? - correct answer-Arrhythmias
What disease can be caused by the following occupational toxicants: Nitroglycerine, ethylene glycol
dinitrate? - correct answer-Systemic hypotension
What disease can be caused by the following occupational toxicants: Carbon tetrachloride, toluene?
- correct answer-Fatty liver (steatosis)
What disease can be caused by the following occupational toxicants: Arsenic, trichloroethylene? -
correct answer-Cirrhosis
What disease can be caused by the following occupational toxicant: Legionella pneumophlia? -
correct answer-Legionellosis
What disease can be caused by the following occupational toxicant: Mycobaterium tuberculosis
hominis? - correct answer-Tuberculosis
, Page 3 of 34
20 August 2026
What industries and occupations may expose workers to asbestos? - correct answer-Miners,
abatement workers, construction workers, sheet metal workers, steam fitters, shipyard workers.
What industries and occupations may expose workers to Crystalline silica? - correct answer-Stone
and ceramics industry, foundries, construction, abrasives manufacturing
What industries and occupations may expose workers to arsenic? - correct answer-Miners,
nonferrous metal smelting, arsenical pesticide manufaturers and applicators.
What industries and occupations may expose workers to cadmium? - correct answer-Cadmium
smelting, battery production, dyes and pigment making, electroplating
What industries and occupations may expose workers to Hexavalent chromium compounds and
nickel compounds? - correct answer-Chromate production plants, dye and pigment making, welders,
tanners, nickel smelting, welding
What industries and occupations may expose workers to Benzene? - correct answer-Refineries, shoe
industry; chemical, pharmaceutical, and rubber industry; printing industry
What industries and occupations may expose workers to Vinyl chloride? - correct answer-Plastics
industry, production of polyvinyl chloride products and copolymers
What industries and occupations may expose workers to aflatoxin? - correct answer-Animal feed
industry, grain handling and processing
What is the difference between exposure monitoring and biological monitoring? - correct
answerExposure monitoring: is used to assess airborne exposures: unbiased measures of exposure,
repeated random sampling is the best approach, and it it used for assessing exposures to groups
rather than individual is more efficient.
Biological monitoring: consists of measurements of toxicants, their metabolites or expected
molecular signatures in specimens from humans or animals including urine, feces, exhaled breath,
hair, fingernails or toenails, bronchial lavage, breast milk, and adipose tissue. **Accounts for all
exposures by all routes for the assessed analytes.
, Page 4 of 34
20 August 2026
What is the most visible form of air pollution? - correct answer-Smoke
Which class of air quality standards set maximum atmospheric concentrations for specific
pollutants? - correct answer-US National Ambient Air Quality Standards and EU Air Quality Directive
Which class of air quality standards take the form of a scale with various thresholds, which is used to
communicate to the public the relative risk of outdoor activity. The scale may or may not distinguish
between different pollutants? - correct answer-North American Air Quality Index
What are the 7 major air pollutants? - correct answer-1. *Carbon monoxide (52%)
2. *Sulfur oxides
3. Hydrocarbons
4. *Particular matter ("a preeminent air pollutant")
5. *Nitrogen oxides
6. *Lead
7. *Ground-level ozone
* = Criteria Air Pollutant
What are the greenhouse gasses? - correct answer-Water vapor and droplets (66-85%)
Carbon dioxide (9-26%)
Methane (4-9%)
Ozone (3-7%)
***Nitrogen and Oxygen are NOT greenhouse gases.
What are 4 major sources of air pollutants? - correct answer-1. Fuels used in electric power plants
and other industrial processes.
2. Car exhausts
3. Waste/Refuse Disposal
4. Gasses emitted by livestock and swamps
