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MICROBES IN AQUATIC ENVIRONMENT

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

Clostridium
Escherichia
Chlorobium
Rhodospirillum

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Microbes in Aquatic Environment
Because it can be used with a variety of media and allow a resuscitation step the __________ technique has become the common and often preferred method of evaluating the microbiological characteristics of water.

membrane filtration
Winogradsky
most probable number
MUG

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Microbes in Aquatic Environment
Trickling filter comes under

secondary treatment
primary treatment
none of these
tertiary treatment

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Microbes in Aquatic Environment
Which of the following species in water reveal the presence of fecal pollution of human or animal origin?

All of these
E.coli
Fecal Streptococci
Clostridium perfringens

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Microbes in Aquatic Environment
Activated sludge undergoes

Tertiary treatment
Secondary treatment
Primary treatment
any of these

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