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Waste Water Engineering

Waste Water Engineering
The underground sewers are more subjected to

Tensile force
Bending force
Shearing force
Compressive force

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Waste Water Engineering
For providing an Indian type W.C., the R.C.C. slabs in the toilet portion

Should be sunk by 20 cm
Should be kept 20 cm above the adjacent portion
Need not be sunk
Should be sunk by 50 cm

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Waste Water Engineering
The rate of accumulation of sludge in septic tanks is recommended as

25 litres/person/year
25 litres/person/month
30 litres/person/month
30 litres/person/year

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Waste Water Engineering
The algae dies out in the zone of

Active decomposition
Cleaner water
Recovery
Degradation

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Waste Water Engineering
Pick up the incorrect size of stone ware sewers

82.5 cm
None of these
67.5 cm
52.5 cm

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Waste Water Engineering
In septic tanks, decomposition of organic bacteria, is done by

Anaerobic bacteria
Both types of bacterias
None of these
Aerobic bacteria

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