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Civil Set-1
Environmental Engineering
111

Environmental Engineering MCQ with Answers

111) Settling velocity increases with

specific gravity of solid particles

size of particles

depth of tank

temperature of liquid

Answer is:

depth of tank

Environmental Engineering MCQ with Answers

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Related Environmental Engineering MCQ with Answers

112) Standard BOD is measured at

20°C - 1day

25°C- 3day

20°C - 5day

30°C- 5day

Answer is:

20°C - 5day

113) Select the correct statement.

5 day BOD is the ultimate BOD.

5 day BOD is greater than 4 day BOD keeping other conditions same.

5 day BOD is less than 4 day BOD keeping other conditions same.

BOD does nof depend on time.

Answer is:

5 day BOD is less than 4 day BOD keeping other conditions same.

114) 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

100000

1000

4000

400000

Answer is:

400000

115) The rate of BOD exerted at any time is

directly proportional to BOD satisfied

directly proportional to BOD remain-ing ,

inversely proportional to BOD satisfied

inversely proportional to BOD re-maining

Answer is:

directly proportional to BOD remain-ing ,

Environmental Engineering MCQ with Answers

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