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Waste Water Engineering

Waste Water Engineering
A rain sanitary sewer is constructed to carry

Surface water
Ground water
Storm sewage
Sanitary sewage

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Waste Water Engineering
A drop manhole is provided if

None of these
A branch sewer joins the main sewer at higher level
A sewer drops from a height
A lamp is inserted to check obstruction

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Waste Water Engineering
A rainfall may be classified as acidic if its pH value is less or equal to

5
6.5
6
7

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Waste Water Engineering
‘Cowl’ is provided at

First step in manhole
Upper end of ventilating column
Upper end of the manhole
Lower end of ventilating column

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Waste Water Engineering
Removal of oil and grease from sewage, is known

Filtration
Screening
Skimming
None of these

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Waste Water Engineering
The settlement of a particle in sedimentation tank, is affected by

Velocity of flow
Viscosity of water
All listed here
Size and shape of solid

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