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Environmental Engineering

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

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

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Environmental Engineering
The means of access for inspection and cleaning of sewer line is known as

Drop manhole
Manhole
Inlet
Catch basin

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Environmental Engineering
For a given discharge, the efficiency of sedimentation tank can be increased by

Increasing the depth of tank
Increasing the surface area of tank
Decreasing the depth of tank
Decreasing the surface area of tank

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Environmental Engineering
When there is no recirculation of sewage, then recirculation factor is

None of these
Infinity
1

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Environmental Engineering
The detention period in coagulation tanks is usually kept as

1 to 2 minutes
2 to 6 days
30 to 45 minutes
2 to 6 hours

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Environmental Engineering
The hourly variation factor is usually taken as

1.5
2.7
1.8
2.0

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MORE MCQ ON Environmental Engineering

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