A. Carbondioxide
B. Methane
C. Ammonia
D. Carbon monoxide
✅ The correct answer is option B.
Civil Engineering Mcqs MCQs
To test chemical oxygen demand (C.O.D.) of sewage, organic matter is oxidised by potassium dichromate in the presence of_______________?
A. Hydrochloric acid
B. Sulphuric acid
C. Nitric acid
D. Citric acid
✅ The correct answer is option B.
Lead acetate test in sewer manhole is done to test the presence of ____________________?
A. Methane gas
B. Hydrogen sulphide
C. Carbondioxide gas
D. Diesel vapours
✅ The correct answer is option B.
What refers to the residual value of a company’s assets after all outside liabilities (shareholders excluded) have been allowed for ?
A. Dividend
B. Equity
C. Return
D. Par value
✅ The correct answer is option B.
Centre of pressure compared to e.g. is______________?
A. above it
B. below it
C. at same point
D. above or below depending on area of body
✅ The correct answer is option B.
In olden days the type of section adopted in trunk and out fall sewers was__________________?
A. Parabolic shaped
B. Horse shoe shaped
C. Egg shaped
D. Circular shaped
✅ The correct answer is option B.
The minimum diameter of a sewer is kept __________________?
A. 10 cm
B. 15 cm
C. 20 cm
D. 25 cm
✅ The correct answer is option B.
pH value of sludge during alkaline regression stage, is__________________?
A. More than 7
B. Less than 7
C. Less than 6
D. More than 6
✅ The correct answer is option A.
The maximum depth of sedimentation tanks, is kept__________________?
A. 3 m
B. 3.5 m
C. 4 m
D. 4.5 m
✅ The correct answer is option A.
The center of pressure of a surface subjected to fluid pressure is the point____________________?
A. on the surface at which resultant pres-sure acts
B. on the surface at which gravitational force acis
C. at which all hydraulic forces meet
D. similar to metacentre
✅ The correct answer is option A.