Polychlorinated biphenyls (pcbs) are commonly used as cooling fluids

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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