A. Parabolic
B. Circular
C. Rectangular
D. New egged
Related Mcqs:
- The most efficient cross section of sewers in a separate sewerage system is__________________?
A. Parabolic
B. Circular
C. Rectangular
D. New egged - The suitable cross-section of sewers to carry combined flow, is__________________?
A. Circular
B. Egg shaped
C. Rectangular
D. Horse shoe shaped - The gas evolved in sewers is________________?
A. Carbondioxide
B. Hydrogen sulphide
C. Methane
D. All of these - In olden days the type of section adopted in trunk and out fall sewers was__________________?
A. Parabolic shaped
B. Horse shoe shaped
C. Egg shaped
D. Circular shaped - Assertion A.: The determination of pH value of sewerage is important. Reason (R): The efficiency of certain treatment methods depends upon the availability of pH value________________?
A. Both A and R are true and R is the correct explanation of A
B. Both A and R are true but R is not a correct explanation of A
C. A is true but R is false
D. A is false but R is true - The sewerage system consists of______________________?
A. House sewer
B. Lateral sewer
C. Branch sewer
D. All of these - The angle subtended by the surface of sewer water with partial flow, at sewer centre is 120°, the depth of sewerage is________________________?
A. 20 cm
B. 25 cm
C. 40 cm
D. 50 cm - The sewerage system originates from__________________?
A. House sewers
B. Lateral sewers
C. Branch sewers
D. Main sewers - 3.0 ml of raw sewage is diluted to 300 ml. The D.O. concentration of the diluted sample at the beginning of the test was 8 mg/l. After 5 day-incubation at 20°C, the D.O. concentration was 5 mg/l. The BOD of raw sewerage is______________________?
A. 100 mg/l
B. 200 mg/l
C. 300 mg/l
D. 400 mg/l - In areas where light rains are uniformly distributed throughout the year, the type of sewerage system to be adopted is_______________?
A. Separate system
B. Combined system
C. Partially combined system
D. None of these
