101. The ratio of maximum sewage flow to average sewage flow for trunk mains having diameters more than 1.25 m, is____________________?
A. 1.5
B. 2.0
C. 3.0
D. 4.0
✅ The correct answer is option A.
Civil Engineering Mcqs MCQs
102. For house drainage minimum gradient is__________________?
A. 1 in 60
B. 1 in 80
C. 1 in 10
D. 1 in 400
✅ The correct answer is option A.
103. The grit and silt of the grit chambers, may not be used for_________________?
A. Raising low lying areas by dumping
B. Concreting
C. Both A. and B.
D. Neither A. nor B
✅ The correct answer is option B.
104. The asbestos cement pipes are generally laid___________________?
A. Horizontally
B. Vertically
C. At an angle of 30°
D. At an angle of 60°
✅ The correct answer is option B.
105. The sewer that unloads the sewage at the point of treatment is called_________________?
A. Main sewer
B. Outfall sewer
C. Branch sewer
D. House sewer
✅ The correct answer is option B.
106. Sludge banks are formed if sewage is disposed of in____________________ ?
A. Rivers
B. Seas
C. Lakes
D. None of these
✅ The correct answer is option B.
107. What is the reduction in the money value of capital asset is called ?
A. Capital expenditure
B. Capital loss
C. Loss
D. Deficit
✅ The correct answer is option B.
108. 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 correct answer is option B.
109. Depletion of ozone layer in the outer atmosphere may cause___________________ ?
A. Lung cancer
B. Skin cancer
C. Bronchitis
D. Heart disorder
✅ The correct answer is option B.
110. The most efficient cross section of sewers in a separate sewerage system is__________________?
A. Parabolic
B. Circular
C. Rectangular
D. New egged
✅ The correct answer is option B.