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Microbes in Aquatic Environment

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

Tertiary treatment
Secondary treatment
None of these
Primary treatment

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Microbes in Aquatic Environment
Activated sludge undergoes

Primary treatment
Secondary treatment
any of these
Tertiary treatment

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

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

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Microbes in Aquatic Environment
The rate of flux of oxygen in air is __________ to/than the rate of flux of oxygen in water.

lesser
greater
half
approximately equal

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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

Escherichia
Chlorobium
Rhodospirillum
Clostridium

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Microbes in Aquatic Environment
Trickling filter comes under

primary treatment
secondary treatment
tertiary treatment
none of these

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