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Microbiology of Waste Water

Microbiology of Waste Water
Oxidation ponds are shallow ponds, generally designed at the depth of

5 to 8 feet
1 to 3 feet
4 to 6 feet
2 to 40 feet

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Microbiology of Waste Water
Composting is one of the oldest forms of disposal of waste. It is the natural process of decomposition of organic waste that yields manure or compost. One of the following is added to the compost to get better results?

Worms
Ants
Bugs
Snakes

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Microbiology of Waste Water
Which of the following is not employed as an oxidation method?

Trickling filters
All of these
Oxidation ponds
Contact aerators

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Microbiology of Waste Water
Activated sludge contains large number of

bacteria
yeasts and molds
all of these
protozoa

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Microbiology of Waste Water
Which is not a form of biomass energy?

Photovoltaic production of hydrogen
Ethanol and methanol production for auto fuel
Incineration of solid waste
Composting to produce methane

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Microbiology of Waste Water
Water testing relies on the detection of certain indicator organisms known as

acid-fast bacteria
bacteroids
dinoflagellates
coliforms

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