Name: Module 4 Quiz

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Instructions: Multiple Choice and True/False.

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Multiple Choice (1 points)
Question: Biodegradation requires enzymes. These enzymes are produced by

Hydrophilic diets
Mineralizing gradients
Photolysis
Plant and animal cells and microorganisms

Multiple Choice (1 points)
Question: If the log Kow of Toluene is 2.69, and we perform an octanol-water partitioning experiment and find 1 mg/L of toluene in the water, how much is in the octanol?

490
269
2690
26900

Multiple Choice (1 points)
Question: The concentration of PCBs in the fat of whales is much greater than in the fat of the fish they eat. This is an example of

Biomagnification
bioconcentration
bad manners
hydrophilic reactions

Multiple Choice (1 points)
Question: The vapor pressure of n-hexane (at STP) is 1880 Pa. What is the vapor pressure expresses in torr?
Ans

141
14100
14.1
1.41

True / False (1 points)
Question: A canoe is diffused down a stream.

TRUE
FALSE

True / False (1 points)
Question: Charcoal is good for absorbing organic substances like gasoline

TRUE
FALSE

Question 6 True / False (1 points)
Question: Ions are very hydrophobic.

TRUE
FALSE

True / False (1 points)
Question: Many contaminants become bound to organic material in the soil and sediments. This makes chemical analysis of these contaminants much easier.

TRUE
FALSE

True / False (1 points)
Question: Organic carbon in soil will keep lipophilic chemicals from binding to the soil

TRUE
FALSE

True / False (1 points)
Question: Water is a lipophilic substance.

TRUE
FALSE