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Practice Quiz
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1

Hazardous substances and hazardous wastes are the same thing.
A)True
B)False
2

The 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
3

The 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
4

Effects of chronic toxicity are more difficult to discern than those of acute toxicity.
A)True
B)False
5

DDT is an example of a
A)Non-persistent chemical
B)Persistent chemical
C)Biodegradable chemical
D)None of the above
6

The 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
7

Which 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
8

Each discarded computer contains approximately 2 kg (4 lbs) of which metal?
A)Cadmium
B)Lead
C)Mercury
D)Arsenic
9

The 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
10

It is illegal to incinerate hazardous wastes.
A)True
B)False
11

The 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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