281. Dry water flow in a combined sewer, is______________________?
A. Industrial sewage
B. Domestic sewage
C. Storm water
D. Inclusive of domestic and industrial sewage but excludes storm water
✅ The correct answer is option C.
Civil Engineering Mcqs MCQs
282. If the pH value of sewage is 7__________________?
A. It is acidic
B. It is alkaline
C. It is neutral
D. None of these
✅ The correct answer is option C.
283. The pH value of sewage is determined with the help of_________________?
A. Imhoff Cone
B. Turbid meter
C. Potentiometer
D. None of these
✅ The correct answer is option C.
284. In areas where rainy season is limited to a few months, the type of sewerage system recommended is__________________?
A. Combined system
B. Partially separate system
C. Separate system
D. None of these
✅ The correct answer is option C.
285. Fresh sewage may become stale in_________________?
A. One hour
B. Two to three hours
C. Three to four hours
D. Six hours
✅ The correct answer is option C.
286. The continuity equation is connected with_______________?
A. viscous/unviscous fluids
B. compressibility of fluids
C. conservation of mass
D. steady/unsteady flow
✅ The correct answer is option C.
287. The minimum recommended diameter of sewers, is_________________?
A. 5 cm
B. 10 cm
C. 15 cm
D. 20 cm
✅ The correct answer is option C.
288. The normal stress is same in all directions at a point in a fluid ___________________?
A. only when the fluid is frictionless
B. only when the fluid is incompressible and has zero viscosity
C. when there is no motion of one fluid layer relative to an adjacent layer
D. irrespective of the motion of one fluid layer relative to an adjacent layer
✅ The correct answer is option C.
289. The resultant upward pressure of a fluid on a floating body is equal to the weight of the fluid displaced by the body. This definition is according to____________________?
A. Buoyancy
B. Equilibrium of a floating body
C. Archimedes’ principle
D. Bernoulli’s theorem
✅ The correct answer is option C.
290. The detention time (t) of a settling tank, may be defined as the time required for_________________?
A. A particle to travel along its length
B. A particle to travel from top surface to bottom sludge zone
C. The flow of sewage to fill the tank
D. None of these
✅ The correct answer is option C.