🏗️Civil Engineering MCQs
Civil Engineering MCQs
479 MCQs151
Flocculated particles do not change their___________________?
ASize
BShape
CWeight
DNone of these
152
For providing an Indian type W.C., the R.C.C. slabs in the toilet portion__________________?
AShould be sunk by 20 cm
BShould be kept 20 cm above the adjacent portion
CShould be sunk by 50 cm
DNeed not be sunk
153
The width of a rectangular sewer is twice its depth while discharging 1.5 m/sec. The width of the sewer is______________?
A0.68 m
B0.88 m
C1.36 m
D1.76 m
154
In SI units the power of sound is represented in __________________?
AKgs
BJoules
CNewtons
DWatts
155
For the survival of fish in a river stream, the minimum dissolved oxygen is prescribed________________?
A3 ppm
B4 ppm
C5 ppm
D10 ppm
156
The coagulant widely used for sewage treatment, is_________________?
AAlum
BFerric chloride
CFerric sulphate
DChlorinated copperas
157
For a peak discharge of 0.0157 cumec, with a velocity of 0.9 m/sec, the diameter of the sewer main, is________________?
A10 cm
B12 cm
C15 cm
D18 cm
158
You are asked to design sewer pipes of diameters 0.4 m to 0.9 m at maximum flow, you will assume the sewer flow running at___________________?
AFull depth
BHalf full
CTwo third full
DThree fourth full
159
In a sludge digestion tank if the moisture content of sludge V1 litres is reduced from p1 % to p2 % the volume V2 is____________________?
A[(100 + P1)/(100 – P2)] V1
B[(100 – P1)/(100 + P2)] V1
C[(100 – P1)/(100 – P2)] V1
D[(100 + P2)/(100 – P1)] V1
160
The sewage treatment in septic tanks is due to__________________?
AAnaerobic decomposition
BAerobic decomposition
CParasitic decomposition
DNone of these