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Microbes in Human Welfare — BIOLOGY STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceBIOLOGYMicrobes in Human Welfare1 Mark
MCQ
What is secondary sewage treatment mainly?
  • A
    Physical Process
  • B
    Mechanical Process
  • C
    Chemical Process
  • D
    Biological Process
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Answer

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