In SI units the power of sound is represented in __________________?
A. Kgs
B. Joules
C. Newtons
D. Watts
Civil Engineering Mcqs
For the survival of fish in a river stream, the minimum dissolved oxygen is prescribed________________?
For the survival of fish in a river stream, the minimum dissolved oxygen is prescribed________________?
A. 3 ppm
B. 4 ppm
C. 5 ppm
D. 10 ppm
The coagulant widely used for sewage treatment, is_________________?
The coagulant widely used for sewage treatment, is_________________?
A. Alum
B. Ferric chloride
C. Ferric sulphate
D. Chlorinated copperas
The ratio of minimum hourly flow to the average flow of sewage is_________________?
The ratio of minimum hourly flow to the average flow of sewage is_________________?
A. 1/4
B. 1/3
C. 1/2
D. 3/4
Removal of oil and grease from sewage, is known____________________?
Removal of oil and grease from sewage, is known____________________?
A. Screening
B. Skimming
C. Filtration
D. None of these
The gradient of sewers depends upon_________________?
The gradient of sewers depends upon_________________?
A. Velocity of flow
B. Diameter of the sewer
C. Discharge
D. All the above
The standard B.O.D. of water is taken for_________________?
The standard B.O.D. of water is taken for_________________?
A. 1 day
B. 2 days
C. 3 days
D. 5 days
Fresh sewage may become stale in_________________?
Fresh sewage may become stale in_________________?
A. One hour
B. Two to three hours
C. Three to four hours
D. Six hours
The sewage discharge in a detritus tank of a treatment plant is 576 litres/sec with flow velocity of 0.2 m/sec. If the ratio of width to depth is 2, the depth is____________________?
The sewage discharge in a detritus tank of a treatment plant is 576 litres/sec with flow velocity of 0.2 m/sec. If the ratio of width to depth is 2, the depth is____________________?
A. 100 cm
B. 110 cm
C. 120 cm
D. 150 cm
Drop manholes at the junctions of sewer lines, are provided if________________?
Drop manholes at the junctions of sewer lines, are provided if________________?
A. Invert level of a branch sewer is more than 60 cm that of the main sewer
B. Sewer line runs along a main road
C. Ordinary manhole cannot be built
D. Two sewer lines intersect