Waste Water Engineering If a paper moistened with lead acetate for five minutes when placed in manhole turns black. The sewer certainly contains Carbon dioxide Hydrogen sulphide Methane Oxygen Carbon dioxide Hydrogen sulphide Methane Oxygen ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Lead acetate test in sewer manhole is done to test the presence of Diesel vapours Carbondioxide gas Hydrogen sulphide Methane gas Diesel vapours Carbondioxide gas Hydrogen sulphide Methane gas ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering Bio-chemical oxygen demand (BOD) for the first 20 days in generally referred to Initial demand Carbonaceous demand First stage demand All of these Initial demand Carbonaceous demand First stage demand All of these ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering For providing an Indian type W.C., the R.C.C. slabs in the toilet portion Should be sunk by 50 cm Should be kept 20 cm above the adjacent portion Should be sunk by 20 cm Need not be sunk Should be sunk by 50 cm Should be kept 20 cm above the adjacent portion Should be sunk by 20 cm Need not be sunk ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering A rainfall may be classified as acidic if its pH value is less or equal to 5 6.5 7 6 5 6.5 7 6 ANSWER DOWNLOAD EXAMIANS APP
Waste Water Engineering A manhole is classified as shallow if its depth is between 0.9 to 1.20 m 0.4 to 0.5 m 0.5 to 0.7 m 0.7 to 0.9 m 0.9 to 1.20 m 0.4 to 0.5 m 0.5 to 0.7 m 0.7 to 0.9 m ANSWER DOWNLOAD EXAMIANS APP
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