The bio-chemical treatment of sewage effluent is a process of -

অন্যান্য অন্যান্য 05 Oct, 2018

প্রশ্ন The bio-chemical treatment of sewage effluent is a process of -

  • ক.
    oxidation
  • খ.
    deoxidation
  • গ.
    sedimentation
  • ঘ.
    selt-purification

সঠিক উত্তর

oxidation

মন্তব্য

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