- (A) Hydrology
- (B) Dissolved oxygen in water
- (C) Temperature
- (D) All the above
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- (A) 45 %
- (B) 50 %
- (C) 55 %
- (D) 60 %
- (A) Imhoff Cone
- (B) Turbid meter
- (C) Potentiometer
- (D) None of these
- (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) 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) Combined system
- (B) Partially separate system
- (C) Separate system
- (D) None of these
- (A) Separate system
- (B) Combined system
- (C) Partially combined system
- (D) None of these
- (A) 0°C
- (B) 15°C
- (C) 20°C
- (D) 25°C
- (A) Manholes are provided in sewer pipes at suitable intervals
- (B) Catch basins are generally provided in sewers for carrying drainage discharge
- (C) Inlets are generally provided in all sewers
- (D) None of these
- (A) When sewage is fresh
- (B) When diluting water has high dissolved oxygen content
- (C) When diluting water is used for water supply near the point of sewage disposed
- (D) When the diluting water is having flow currents
