FEMA IS 0005 A COMPREHENSIVE
EXAMINATION TEST COMPLETE
QUESTIONS WITH ACCURATE SOLUTIONS
●● ACGIH
Answer: American Conference of Governmental Industrial Hygienist
●● Acute Exposure
Answer: An exposure to a toxic substance which occurs in a short or
single time period.
●● Acute Toxicity
Answer: Any poisonous effect produced by a single short-term exposure.
The LD50 of a substance (the lethal does at which 50% of test animals
succumb to the toxicity of the chemical) is typically used as a measure
of its acute toxicity.
●● Additive Effect
Answer: A biological response to exposure to multiple chemicals which
is equal to the sum of the effects of the individual agents.
●● Adsorption
Answer: The bonding of chemicals to soil particles or other surfaces.
, ●● Aerosol
Answer: A solid particle or liquid droplet suspended in air. An aerosol is
larger than a molecule and can be filtered from the air.
●● Antagonism
Answer: The situation in which two chemicals interfere with each other's
actions, or one chemical interferes with the action of the other.
●● Aquifer
Answer: An underground bed, or layer, of earth, gravel, or porous
storage that contains water.
●● Asphyxiants
Answer: Chemicals that starve the cells of an individual from the life-
giving oxygen needed to sustain metabolism.
●● Biodegradable
Answer: Capable of decomposing quickly through the action of
microorganisms.
●● Biomagnification
Answer: The tendency of certain chemicals to become concentrated as
they move into and up the food chain.
EXAMINATION TEST COMPLETE
QUESTIONS WITH ACCURATE SOLUTIONS
●● ACGIH
Answer: American Conference of Governmental Industrial Hygienist
●● Acute Exposure
Answer: An exposure to a toxic substance which occurs in a short or
single time period.
●● Acute Toxicity
Answer: Any poisonous effect produced by a single short-term exposure.
The LD50 of a substance (the lethal does at which 50% of test animals
succumb to the toxicity of the chemical) is typically used as a measure
of its acute toxicity.
●● Additive Effect
Answer: A biological response to exposure to multiple chemicals which
is equal to the sum of the effects of the individual agents.
●● Adsorption
Answer: The bonding of chemicals to soil particles or other surfaces.
, ●● Aerosol
Answer: A solid particle or liquid droplet suspended in air. An aerosol is
larger than a molecule and can be filtered from the air.
●● Antagonism
Answer: The situation in which two chemicals interfere with each other's
actions, or one chemical interferes with the action of the other.
●● Aquifer
Answer: An underground bed, or layer, of earth, gravel, or porous
storage that contains water.
●● Asphyxiants
Answer: Chemicals that starve the cells of an individual from the life-
giving oxygen needed to sustain metabolism.
●● Biodegradable
Answer: Capable of decomposing quickly through the action of
microorganisms.
●● Biomagnification
Answer: The tendency of certain chemicals to become concentrated as
they move into and up the food chain.
