51. Fresh sewage is generally_____________________?
A. Alkaline
B. Acidic
C. Highly decomposed
D. A source of objectionable odour
✅ The correct answer is option A.
Civil Engineering Mcqs MCQs
52. The ratio of the diameter of a circular section and the side of a square section hydraulically equivalent, is____________________?
A. 1.095
B. 1.085
C. 1.075
D. 1.065
✅ The correct answer is option A.
53. Dimensions of surface tension are_________________?
A. MlL°T2
B. MlL°Tx
C. MlL r2
D. MlL2T2
✅ The correct answer is option A.
54. The vapour pressure over the concave surface is__________________?
A. less man the vapour pressure over the plane surface
B. equal to the vapour pressure over the plane surface
C. greater than the vapour pressure over the plane surface
D. zero
✅ The correct answer is option A.
55. Viscosity of water in comparison to mercury is ______________________?
A. higher
B. lower
C. same
D. higher/lower depending on temperature
✅ The correct answer is option A.
56. A rain sanitary sewer is constructed to carry_________________ ?
A. Sanitary sewage
B. Storm sewage
C. Surface water
D. Ground water
✅ The correct answer is option A.
57. The buoyancy depends on__________________?
A. mass of liquid displaced
B. viscosity of the liquid
C. pressure of the liquid displaced
D. depth of immersion
✅ The correct answer is option A.
58. The two important forces for a floating body are___________________?
A. buoyancy, gravity
B. buoyancy, pressure
C. buoyancy, inertial
D. inertial, gravity
✅ The correct answer is option A.
59. The region between the separation streamline and the boundary surface of the solid body is known as_________________?
A. wake
B. drag
C. lift
D. boundary layer
✅ The correct answer is option A.
60. weight of water, the hydraulic mean depth of the sewer and the bed slope w is the unit of the sewer, then the tractive force exerted by flowing water, is________________________?
A. w r S S
B. w r1/2
C. w r S
D. w r2/3
✅ The correct answer is option A.