Exercise: Microbes In Aquatic Environment

Questions for: Microbes In Aquatic Environment

__________ is an environment like __________ where microorganisms are functioning in an extremely thin film of water and where oxygen-containing air is close to them.
A:
low oxygen diffusion environment; soils
B:
high oxygen diffusion environment; soils
C:
low oxygen diffusion environment; lakes
D:
high oxygen diffusion environment; lakes
Answer: B
No answer description is available. Let's discuss.
The rate of flux of oxygen in air is __________ to/than the rate of flux of oxygen in water.
A:
greater
B:
lesser
C:
approximately equal
D:
half
Answer: A
No answer description is available. Let's discuss.
Activated sludge undergoes
A:
Primary treatment
B:
Secondary treatment
C:
Tertiary treatment
D:
any of these
Answer: B
No answer description is available. Let's discuss.
Which of the following species in water reveal the presence of fecal pollution of human or animal origin?
A:
E.coli
B:
Fecal Streptococci
C:
Clostridium perfringens
D:
All of these
Answer: D
No answer description is available. Let's discuss.
Trickling filter comes under
A:
primary treatment
B:
secondary treatment
C:
tertiary treatment
D:
none of these
Answer: B
No answer description is available. Let's discuss.
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