Fresh sewage is generally_____________________?
A. Alkaline
B. Acidic
C. Highly decomposed
D. A source of objectionable odour
Waste Water Engineering
For detecting the nitrites in the sewage, the matching colour may be developed by adding_________________?
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
The laying of sewers is done with____________________?
The laying of sewers is done with____________________?
A. Magnetic compass
B. Theodolite
C. Level
D. Clinometer
The settlement velocity of a solid (diameter 0.5 mm, specific gravity 1.75) in water having temperature 10°C, is______________________?
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
For estimating the peak run off the rational formula Q = 0.0278 KpA was evolved by______________?
For estimating the peak run off the rational formula Q = 0.0278 KpA was evolved by______________?
A. Kinchling
B. Lloyd Davis
C. Frubling
D. All the above
The most effective arrangement for diverting excess storm water into a natural drainage, is____________________?
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
For a peak discharge of 0.0157 cumec, with a velocity of 0.9 m/sec, the diameter of the sewer main, is________________?
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
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___________________?
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
In a sludge digestion tank if the moisture content of sludge V1 litres is reduced from p1 % to p2 % the volume V2 is____________________?
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
The sewage treatment in septic tanks is due to__________________?
The sewage treatment in septic tanks is due to__________________?
A. Anaerobic decomposition
B. Aerobic decomposition
C. Parasitic decomposition
D. None of these