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Microbiology of Waste Water

Microbiology of Waste Water
Which of the following is responsible for the corrosion problem?

Iron bacteria
Slime forming bacteria
All of these
Sulfur bacteria

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Microbiology of Waste Water
The death of a river by environmental pollutants ultimately results from

the overabundance of toxic proteins
the depletion of oxygen
the overpopulation of algae
the buildup of sediment on the river bottom

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Microbiology of Waste Water
Activated sludge contains large number of

yeasts and molds
protozoa
all of these
bacteria

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Microbiology of Waste Water
Treatment of municipal water supplies is based upon

coagulation, filtration, chlorination
chlorination, filtration, coagulation
coagulation, chlorination, filtration
filtration, coagulation, chlorination

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Microbiology of Waste Water
Iron bacteria can produce

slime
extreme acidity
undesirable odors and tastes
both (a) and (b)

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Microbiology of Waste Water
Biogas production is

None of these
an oxygen dependent process
a temperature independent process
a temperature-dependent process

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