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Class 12BiologyMicrobes in Human WelfareMicrobes in Sewage Treatment
Medium

Secondary treatment of sewage

  • A
    Removes grit and large pieces of organic matter
  • B
    Involves shredding,churning,filtration and sedimentation
  • C
    Does not require aeration
  • D
    Involves microbial digestion of organic matter
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Class 12 Questions

Class 12

Biology Questions

Chapter

Microbes in Human Welfare

Subtopic

Microbes in Sewage Treatment

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