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Waste Water Engineering

For detecting the nitrites in the sewage, the matching colour may be developed by adding_________________?

Civil Engineering Mcqs, Waste Water Engineering /
For detecting the nitrites in the sewage, the matching colour may be developed by adding_________________?

A. Potassium permanganate
B. Sulphuric acid and napthamine
C. Phenol-di -sulphuric acid potassium hydroxide
D. None of these

For detecting the nitrites in the sewage, the matching colour may be developed by adding_________________? Read More »

Civil Engineering Mcqs, Waste Water Engineering

The settlement velocity of a solid (diameter 0.5 mm, specific gravity 1.75) in water having temperature 10°C, is______________________?

Civil Engineering Mcqs, Waste Water Engineering /
The settlement velocity of a solid (diameter 0.5 mm, specific gravity 1.75) in water having temperature 10°C, is______________________?

A. 213.5 cm/sec
B. 313.5 cm/sec
C. 413.5 cm/sec
D. 500 cm/sec

The settlement velocity of a solid (diameter 0.5 mm, specific gravity 1.75) in water having temperature 10°C, is______________________? Read More »

Civil Engineering Mcqs, Waste Water Engineering

The most effective arrangement for diverting excess storm water into a natural drainage, is____________________?

Civil Engineering Mcqs, Waste Water Engineering /
The most effective arrangement for diverting excess storm water into a natural drainage, is____________________?

A. Leag weir
B. Overflow weir
C. Siphon spill way
D. None of these

The most effective arrangement for diverting excess storm water into a natural drainage, is____________________? Read More »

Civil Engineering Mcqs, Waste Water Engineering

For a peak discharge of 0.0157 cumec, with a velocity of 0.9 m/sec, the diameter of the sewer main, is________________?

Civil Engineering Mcqs, Waste Water Engineering /
For a peak discharge of 0.0157 cumec, with a velocity of 0.9 m/sec, the diameter of the sewer main, is________________?

A. 10 cm
B. 12 cm
C. 15 cm
D. 18 cm

For a peak discharge of 0.0157 cumec, with a velocity of 0.9 m/sec, the diameter of the sewer main, is________________? Read More »

Civil Engineering Mcqs, Waste Water Engineering

You are asked to design sewer pipes of diameters 0.4 m to 0.9 m at maximum flow, you will assume the sewer flow running at___________________?

Civil Engineering Mcqs, Waste Water Engineering /
You are asked to design sewer pipes of diameters 0.4 m to 0.9 m at maximum flow, you will assume the sewer flow running at___________________?

A. Full depth
B. Half full
C. Two third full
D. Three fourth full

You are asked to design sewer pipes of diameters 0.4 m to 0.9 m at maximum flow, you will assume the sewer flow running at___________________? Read More »

Civil Engineering Mcqs, Waste Water Engineering

In a sludge digestion tank if the moisture content of sludge V1 litres is reduced from p1 % to p2 % the volume V2 is____________________?

Civil Engineering Mcqs, Waste Water Engineering /
In a sludge digestion tank if the moisture content of sludge V1 litres is reduced from p1 % to p2 % the volume V2 is____________________?

A. [(100 + P1)/(100 – P2)] V1
B. [(100 – P1)/(100 + P2)] V1
C. [(100 – P1)/(100 – P2)] V1
D. [(100 + P2)/(100 – P1)] V1

In a sludge digestion tank if the moisture content of sludge V1 litres is reduced from p1 % to p2 % the volume V2 is____________________? Read More »

Civil Engineering Mcqs, Waste Water Engineering