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Microbes in Aquatic Environment

Microbes in Aquatic Environment
Removal of solids is generally considered as a

Primary treatment
Tertiary treatment
Secondary treatment
None of these

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Microbes in Aquatic Environment
The sulfur pearl of Namibia, Thiomargarita namibiensis

Both (a) and (b)
is the worlds smallest bacterium
stores high concentrations of nitrate in a huge internal vacuole which takes up 98% of the organisms volume
is the worlds largest bacterium

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Microbes in Aquatic Environment
Trickling filter comes under

none of these
tertiary treatment
primary treatment
secondary treatment

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Microbes in Aquatic Environment
The Redfield ratio is an index of concentration of

carbon, nitrogen and phosphorous
carbon, hydrogen and oxygen
carbon, phosphorous and sulfur
nitrogen, potassium and iron

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Microbes in Aquatic Environment
The amount of oxygen dissolved in hypolimnion water in the winter is __________ to/than the amount of oxygen dissolved in hypolimnion water in the summer

greater
half
lesser
approximately equal to

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Microbes in Aquatic Environment
Members of all of the following genera of bacteria typically are found in a maturing Winogradsky column except

Rhodospirillum
Chlorobium
Escherichia
Clostridium

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