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MEO Class IV – MEP : 2023/AUG/05
Question
Q5. (a) A biological sewage system develops a fault, which necessitates opening the unit for repair. Explain the following:
i) The risk associated with opening the unit. (5)
ii) The precautions taken to reduce the risk. (5)
(b) Explain the significance of biological oxygen demand (B.O.D). (6)
Asked in Year/Month/Ques No.