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Microbiology of Waste Water

Microbiology of Waste Water
The magnitude of BOD of wastewater is related to

amount of inorganic material
bacterial count
amount of organic material
All of these

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Microbiology of Waste Water
Iron bacteria can produce

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

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Microbiology of Waste Water
Some cyanobacteria produce potent neurotoxins that, if ingested, will kill humans. These cyanobacteria are most likely to contaminate

water that are anoxic
water rich in phosphate wastes but poor in organic carbon
None of these
water rich in organic carbon wastes but poor in phosphate

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Microbiology of Waste Water
The filtering medium of trickling filters is coated with microbial flora, known as

none of these
zoological film
zooglocal film
geological film

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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
Bugs
Ants
Snakes

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Microbiology of Waste Water
The concept of putting microbes to help clean up the environment is called

fermentation
pasteurization
bioremediation
biolistics

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