A. Flourish in the presence of free oxygen
B. Consume organic matter as their food
C. Oxidise organic matter in sewage
D. All the above
A. 25,000 to 35,000 litres/sqm/day
B. 40,000 to 50,000 litres/sqm/day
C. 50,000 to 60,000 litres/sqm/day
D. 80,000 to 100,000 litres/sqm/day
A. orifice plate
B. venturi
C. rotameter
D. pitot tube
E. nozzle
A. 10 days
B. 20 days
C. 30 days
D. 60 days
A. Bazin
B. Crimp and Bruges
C. William-Hazen
D. Kutter
A. A gap of 7.5 cm between the bottom of the covering slab and the top level of scum is provided
B. The outlet invert level is kept 5 to 7.5 cm below the inlet invert level
C. The minimum width of septic level is 90 cm
D. The depth of tank is kept equal to its width
A. d/D = ½ (1 – –
B. a/A
C. r/R = [1 –
D. All the above