Environmental Engineering If Biochemical oxygen demand (BOD) of a town is 20000 kg/day and BOD per capita per day is 0.05 kg, then population equivalent of town is 1000 4,00,000 1,00,000 4000 1000 4,00,000 1,00,000 4000 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The minimum and maximum diameters of sewers shall preferably be 30 cm and 450 cm 15 cm and 100 cm 15 cm and 300 cm 60 cm and 300 cm 30 cm and 450 cm 15 cm and 100 cm 15 cm and 300 cm 60 cm and 300 cm ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering In a BOD test, 1.0 ml of raw sewage was diluted to 100 ml and the dissolved oxygen concentration of diluted sample at the beginning was 6 ppm and it was 4 ppm at the end of 5 day incubation at 20°C. The BOD of raw sewage will be 100 ppm 200 ppm 400 ppm 300 ppm 100 ppm 200 ppm 400 ppm 300 ppm ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The percentage of filtered water, which is used for backwashing in rapid sand filters, is about 2 to 4 5 to 7 0.4 to 1.0 0.2 to 0.4 2 to 4 5 to 7 0.4 to 1.0 0.2 to 0.4 ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering Corrosion in concrete sewers is caused by Dissolved oxygen Septic conditions Nitrogen Chlorine Dissolved oxygen Septic conditions Nitrogen Chlorine ANSWER DOWNLOAD EXAMIANS APP
Environmental Engineering The rate of BOD exerted at any time is Inversely proportional to BOD remaining Inversely proportional to BOD satisfied Directly proportional to BOD satisfied Directly proportional to BOD remaining Inversely proportional to BOD remaining Inversely proportional to BOD satisfied Directly proportional to BOD satisfied Directly proportional to BOD remaining ANSWER DOWNLOAD EXAMIANS APP
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