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Microbiology of Waste Water

Microbiology of Waste Water
The biogas production process takes place at the temperature

lesser than 25°C
45-60°C
all of these
25-40°C

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

All of these
Iron bacteria
Slime forming bacteria
Sulfur bacteria

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Microbiology of Waste Water
Activated sludge contains large number of

protozoa
all of these
yeasts and molds
bacteria

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Microbiology of Waste Water
Which of the following is generally not referred to the sewerage system?

Solid sewers
Sanitary sewers
Combined sewers
Storm sewers

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Microbiology of Waste Water
What is an anaerobic digester?

New diet drink
Microbe that eats hazardous waste
All of these
Method to convert agricultural waste into a biogas

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Microbiology of Waste Water
Biogas production is

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

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