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MEO Class IV – MEP : 2023/AUG/05 – 2024/MAY/02 – 2024/SEP/02

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.

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