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Waste Water Engineering

Waste Water Engineering
In olden days the type of section adopted in trunk and out fall sewers was

Horse shoe shaped
Circular shaped
Egg shaped
Parabolic shaped

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Waste Water Engineering
The sewer which collects the discharge from a collecting system and delivers it to a treatment plant, is known

House sewer
Sewer outfall
Lateral sewer
Branch sewer

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Waste Water Engineering
Cement concrete sewers are only suitable if non-scouring velocity is between

3.0 to 4.0 m/sec
3.5 to 4.5 m/sec
2.5 to 3.0 m/sec
4.5 to 5.5 m/sec

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Waste Water Engineering
For detecting the nitrates in sewage, the colour may be developed by adding

Sulphuric acid and napthamine
Phenol-di -sulphuric acid and potassium hydroxide
None of these
Potassium permanganate

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Waste Water Engineering
The laying of sewers is done with

Magnetic compass
Clinometer
Theodolite
Level

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

Anaerobic bacteria
None of these
Aerobic bacteria
Both types of bacterias

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