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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

Escherichia
Clostridium
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.

MUG
Winogradsky
most probable number
membrane filtration

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Microbes in Aquatic Environment
Trickling filter comes under

tertiary treatment
none of these
secondary treatment
primary 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?

Clostridium perfringens
Fecal Streptococci
All of these
E.coli

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Microbes in Aquatic Environment
Activated sludge undergoes

any of these
Primary treatment
Tertiary treatment
Secondary treatment

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