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Environmental Engineering

Environmental Engineering
The velocity of flow of water in a sedimentation tank is about

5 to 10 cm/sec
15 to 30 cm/hour
15 to 30 cm/sec
15 to 30 cm/minute

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Environmental Engineering
The self cleansing velocity for all sewers in India is usually

3.0 m/sec to 3.5 m/sec
1.5 m/sec to 2.0 m/sec
1.0 m/sec to 1.2 m/sec
Less than 1.0 m/sec

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Environmental Engineering
Average rate of water consumption per head per day as per Indian Standard is

135 liters
165 liters
100 liters
200 liters

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Environmental Engineering
The ratio of 5 day BOD to ultimate BOD is about

43833
1
43864
43894

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Environmental Engineering
The design discharge for the separate sewer system shall be taken as

2 × DWF
Equal to dry weather flow (DWF)
3 × DWF
6 × DWF

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Environmental Engineering
Which of the following values of pH represents a stronger acid?

5
3
2
4

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MORE MCQ ON Environmental Engineering

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