Civil Engineering MCQs

A. Parabolic
B. Circular
C. Rectangular
D. New egged

A. 90 %
B. 95 %
C. 99 %
D. 9.9 %

A. Bio-chemical oxygen demand (b.o.d.)
B. Dissolved oxygen (d.o.)
C. Chemical oxygen demand (c.o.d.)
D. None of these

A. 0°c
B. 15°c
C. 20°c
D. 25°c

A. Separate system
B. Combined system
C. Partially combined system
D. None of these

A. Fertilizer
B. Building material
C. Chemical for lowering b.o.d.
D. Base material for paints

A. Combined system
B. Partially separate system
C. Separate system
D. None of these

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. 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. Lower end of ventilating column
B. Upper end of ventilating column
C. Upper end of the manhole
D. First step in manhole