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Waste Water Engineering

Waste Water Engineering
The laying of sewers is done with

Level
Theodolite
Clinometer
Magnetic compass

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Waste Water Engineering
The spacing of man holes along a straight portion of a sewer is 300 m, the diameter of the sewer may be

1.2 m
0.9 cm
1.5 m
> 1.5 m

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Waste Water Engineering
If 2% solution of a sewage sample is incubated for 5 days at 20°C and depletion of oxygen was found to be 5 ppm, B.O.D. of the sewage is

None of these
250 ppm
200 ppm
225 ppm

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Waste Water Engineering
Chlorination of water is done for the removal of

Hardness
Sediments
Suspended solids
Bacterias

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Waste Water Engineering
If the grit in grit chambers is 4.5 million litres per day, its cleaning is done

Electrically
Hydraulically
Manually
Mechanically

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Waste Water Engineering
For sewer mains of 0.5 to 1 m diameter, the ratio of maximum daily sewage flow to the average daily sewage flow is assumed

2
1.5
3
2.5

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MORE MCQ ON Waste Water Engineering

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