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Waste Water Engineering

Waste Water Engineering
If the flame of a miner’s safety lamp in a manhole extinguishes within 5 minutes, the sewer certainly contains

Oxygen
Carbon dioxide
Hydrogen sulphide
Methane

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Waste Water Engineering
Flocculated particles do not change their

None of these
Weight
Size
Shape

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Waste Water Engineering
The asbestos cement pipes are generally laid

At an angle of 30°
Horizontally
At an angle of 60°
Vertically

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Waste Water Engineering
The drop man holes are generally provided in sewers for

Hilly town ships
Cities in plains
Industrial areas
Large town ships

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Waste Water Engineering
The discharge per unit plan area of a sedimentation tank, is generally called

Over flow velocity
All of these
Over flow rate
Surface loading

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Waste Water Engineering
The intensity of rain is expressed in

cm/day
cm/hour
None of these
cm/minute

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