Waste Water Engineering ¾th or ¼th extra space is left in sewer pipes at maximum discharge for Unexpected increase in population Large scale infiltration of storm water Low estimates of the average and maximum flows All listed here Unexpected increase in population Large scale infiltration of storm water Low estimates of the average and maximum flows All listed here ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If the diameter of sewer is 225 mm, the gradient required for generating self cleansing velocity, is 1 in 120 1 in 60 None of these 1 in 100 1 in 120 1 in 60 None of these 1 in 100 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The drop man holes are generally provided in sewers for Hilly town ships Industrial areas Cities in plains Large town ships Hilly town ships Industrial areas Cities in plains Large town ships ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Bio-chemical oxygen demand (BOD) for the first 20 days in generally referred to Initial demand All of these Carbonaceous demand First stage demand Initial demand All of these Carbonaceous demand First stage demand ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering To test chemical oxygen demand (C.O.D.) of sewage, organic matter is oxidised by potassium dichromate in the presence of Nitric acid Hydrochloric acid Sulphuric acid Citric acid Nitric acid Hydrochloric acid Sulphuric acid Citric acid ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The sewers Must be laid at least 2 to 3 m deep to collect /water from the basements All listed here Must flow under gravity ½ to ¾ full Must be of adequate size to avoid over flow Must be laid at least 2 to 3 m deep to collect /water from the basements All listed here Must flow under gravity ½ to ¾ full Must be of adequate size to avoid over flow ANSWER DOWNLOAD EXAMIANS APP
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