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Microbes in Human Welfare — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYMicrobes in Human Welfare1 Mark
MCQ
What would happen if oxygen availability to activated sludge flocs is reduced?
  • A
    It will slow down the rate of degradation of organic matter.
  • ✓
    The center of flocs will become anoxic, which would cause death of bacteria and eventually breakage of flocs.
  • C
    Flocs would increase in size as anaerobic bacteria would grow around flocs.
  • D
    Protozoa would grow in large numbers.
✓

Answer

Correct option: B.
The center of flocs will become anoxic, which would cause death of bacteria and eventually breakage of flocs.
The center of flocs will become anoxic, which would cause death of bacteria and eventually breakage of flocs.

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