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Microbiology of Waste Water

Microbiology of Waste Water
Activated sludge contains large number of

protozoa
bacteria
yeasts and molds
all of these

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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
Snakes
Ants

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

zooglocal film
geological film
none of these
zoological film

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Microbiology of Waste Water
What is an anaerobic digester?

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

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

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

fermentation
biolistics
bioremediation
pasteurization

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