Polychlorinated biphenyls (PCBs) are commonly used as cooling fluids for electrical transformers.

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Polychlorinated biphenyls (PCBs) are commonly used as cooling fluids for electrical transformers.

 

True

 

False

 

 

 

Question 2

 

 

 

Match the abbreviation for an environmental criterion with its media or receptor.

 

A. Drinking water

 

B. Sediment

 

C. Soil

 

 

 

--------------------------------------------------------------------------------

 

select A B C 1. MCL

 

select A B C 2. PRG

 

select A B C 3. PEC

 

 

 

 

 

Question 3

 

Herbicides are the most abundant type of agricultural pesticide in use by weight.

 

True

 

False

 

 

 

Question 4

 

DDT is a?

 

A.Chlorinated organic pesticide

 

B.Organophosphate pesticide

 

C.PCB

 

D.PAH

 

 

 

Question 5

 

Which chemical is a potential endocrine disrupter?

 

A.DDT

 

B.PCBs

 

C.PAHs

 

D.Dioxins

 

E.All of the above

 

F.None of the above

 

 

 

Question 6

 

Which is a persistent organic pollutant?

 

A.Mercury

 

B.Benzene

 

C.DDT

 

D.Arsenic

 

 

 

 

 

 

 

Question 7

 

Which factor is NOT important in affecting the environmental mobility of organic compounds?

 

A.Molecular weight

 

B.Solubility in water

 

C.Water hardness

 

D.Volatility

 

E.Polarity

 

 

 

Question 8

 

Briefly discuss major environmental toxicological differences between metals and organic compounds.

 

 

 

Question 9

 

In terms of copper toxicity at the Ely Mine Superfund site, describe how bioreceptors may be affected through the various pathways that we studied this session. Discuss humans and fish separately and specifically.

 

 

 

Question 10

 

Discuss the advantages and disadvantages of DDT in modern society.

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