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Practice Quiz
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1Hazardous substances and hazardous wastes are the same thing.
A)True
B)False


2The LD50 refers to the
A)Last dose administered before a test organism is killed
B)Lethal dose that will kill 50% of a test population
C)Probability of killing a test organism 50% of the time
D)None of the above


3The term threshold level describes the concentration of a chemical at which
A)Industrial exposure is expected to occur
B)Industrial exposure is allowed by law
C)Exposure to the chemical does not affect the test animals
D)None of the above


4Effects of chronic toxicity are more difficult to discern than those of acute toxicity.
A)True
B)False


5DDT is an example of a
A)Non-persistent chemical
B)Persistent chemical
C)Biodegradable chemical
D)None of the above


6The Comprehensive Environmental Response, Compensation, and Liability Act is also known as
A)Superfund
B)RCRA
C)The Hazardous Waste Act
D)None of the above


7Which of the following produces the greatest percent of toxic waste material released to the environment in the US?
A)Chemical industry
B)Paper industry
C)Electric utilities
D)Metal mining


8Each discarded computer contains approximately 2 kg (4 lbs) of which metal?
A)Cadmium
B)Lead
C)Mercury
D)Arsenic


9The primary emphasis in the US EPA's pollution prevention hierarchy is to
A)Recycle wastes
B)Treat wastes to reduce their hazard
C)Reduce the amount of pollution generated at the source
D)Sell pollution emissions permits to other companies


10It is illegal to incinerate hazardous wastes.
A)True
B)False


11The US has had major regulations for hazardous materials for approximately
A)10 years
B)20 years
C)30 years
D)40 years





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