81. The most widely used pump for lifting sewage is_________________?
A. Centrifugal pump
B. Reciprocating pump
C. Pneumatic ejector
D. Air pressure pump
✅ The correct answer is option A.
Civil Engineering Mcqs MCQs
82. If the grit in grit chambers is 4.5 million litres per day, its cleaning is done____________________?
A. Manually
B. Mechanically
C. Hydraulically
D. Electrically
✅ The correct answer is option A.
83. Gross margin is the ratio of the gross profit to _________________?
A. Net sale
B. Owner’s equity
C. Inventory turnover
D. Quick assets
✅ The correct answer is option A.
84. An object having 10 kg mass weighs 9.81kg on a spring balance. The value of ‘g’ at this place is___________________?
A. 10m/sec2
B. 9.81 m/sec2
C. 10.2/m sec
D. 9.75 m/sec2
✅ The correct answer is option A.
85. The sewer which received discharge from two or more main sewers, is known as_______________?
A. A trunk sewer
B. An outfall sewer
C. A main sewer
D. An intercepting sewer
✅ The correct answer is option A.
86. For treating the sewage of a large city, you will recommend_________________?
A. A sedimentation tank and an activated sludge treatment plant
B. A plant consisting of Imhoff tanks with low rate trickling filters
C. Sedimentation tanks with high rate trickling filters
D. None of these
✅ The correct answer is option A.
87. A form of business firm which is owned and run by a group of individuals for their mutual benefit is called ___________________?
A. Cooperative
B. Corporation
C. Enterprise
D. Partnership
✅ The correct answer is option A.
88. Cement concrete sewers are only suitable if non-scouring velocity is between_________________?
A. 2.5 to 3.0 m/sec
B. 3.0 to 4.0 m/sec
C. 3.5 to 4.5 m/sec
D. 4.5 to 5.5 m/sec
✅ The correct answer is option A.
89. The bulk modulus of elasticity with increase in pressure___________________?
A. increases
B. decreases
C. remains constant
D. increases first upto certain limit and then decreases
✅ The correct answer is option A.
90. If the diameter of a sewer is 100 mm, the gradient required for generating self cleansing velocity is__________________?
A. 1 in 60
B. 1 in 100
C. 1 in 120
D. None of these
✅ The correct answer is option A.