Hamad Environmental Engineering 16/01/2022 A. 15 cm and 100 cm B. 15 cm and 300 cm C. 30 cm and 450 cm D. 60 cm and 300cm Related Mcqs: The distribution mains are designed for________________?A. maximum daily demand B. maximum hourly demand C. average daily demand D. maximum hourly demand on maxi¬mum day... The percentage of filtered water, which is used for backwashing in rapid sand filters, is about______________?A. 0.2 to 0.4 B. 0.4 to 1.0 C. 2 to 4 D. 5 to 7... Facultative bacteria are able to work in________________?A. presence of oxygen only B. absence of oxygen only C. presence as well as in absence of oxygen D. presence of water... The characteristics of fresh and septic sewage respectively are____________________?A. acidic and alkaline B. alkaline and acidic C. both acidic D. both alkaline... The rate of filtration in slow sand filters in million litres per day per hectare is about_____________?A. 50 to 60 B. 100 to 150 C. 500 to 600 D. 1400 to 1500...
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