A. 1000
B. 4000
C. 100000
D. 400000
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Related Mcqs:
- The correct relation between theoretical oxygen demand (TOD), Biochemical oxygen demand (BOD) and Chemical oxygen demand (COD) is given by_______________?
- A. TOD>BOD>COD B. TOD>COD>BOD C. BOD>COD>TOD D. COD>BOD>TOD...
- The population of a town in three consecutive years are 5000, 7000 and 8400 respectively. The population of the town in the fourth consecutive year according to geometrical increase method is________________?
- A. 9500 B. 9800 C. 10100 D. 10920...
- 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___________?
- A. 100 ppm B. 200 ppm C. 300 ppm D. 400 ppm...
- The relative stability of a sewage sample, whose dissolved oxygen is same as the total oxygen required to satisfy BOD, is______________?
- A. 1 B. 100 C. infinite D. zero...
- The ratio of 5 day BOD to ultimate BOD is about_______________?
- A. 1/3 B. 2/3 C. 3/4 D. 1.0...
- Which of the following causes a decrease in per capita consumption ?
- A. use of metering system B. good quality of water C. better standard of living of the people D. hotter climate...
- Standard BOD is measured at________________?
- A. 20°C – 1day B. 25°C- 3day C. 20°C – 5day D. 30°C- 5day...
- The rate of BOD exerted at any time is_____________?
- A. directly proportional to BOD satisfied B. directly proportional to BOD remain-ing C. inversely proportional to BOD satisfied D. inversely proportional to BOD re-maining...
- The maximum efficiency of BOD removal is achieved in______________?
- A. oxidation pond B. oxidation ditch C. aerated lagoons D. trickling filters...
- The suitable layout of a distribution system for irregularly growing town is_______________?
- A. dead end system B. grid iron system C. radial system D. ring system...
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