Waste Water Engineering A rainfall may be classified as acidic if its pH value is less or equal to 7 6 5 6.5 7 6 5 6.5 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The detention time (t) of a settling tank, may be defined as the time required for A particle to travel along its length A particle to travel from top surface to bottom sludge zone The flow of sewage to fill the tank None of these A particle to travel along its length A particle to travel from top surface to bottom sludge zone The flow of sewage to fill the tank None of these ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering If the pH value of sewage is 7 It is alkaline It is neutral It is acidic None of these It is alkaline It is neutral It is acidic None of these ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Aerobic activity is maximum In sewer treatment plants None of these In freshly produced sewage At sewer pipes In sewer treatment plants None of these In freshly produced sewage At sewer pipes ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering The moisture content of sludge is reduced from 90% to 80% in a sludge digestion tank. The percentage decrease in the volume of sludge, is 0.5 0.25 0.1 0.05 0.5 0.25 0.1 0.05 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering In very first stage of decomposition of the organic matter in sewage Carbondioxide is formed Ammonia is formed Nitrites are formed Nitrates are formed Carbondioxide is formed Ammonia is formed Nitrites are formed Nitrates are formed ANSWER DOWNLOAD EXAMIANS APP
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