Civil Engineering MCQs

2965 MCQs  (Page 276 of 297)

Attempt Civil Engineering MCQs Quiz
Drop manholes at the junctions of sewer lines, are provided if________________?
A. Invert level of a branch sewer is more than 60 cm that of the main sewer
B. Sewer line runs along a main road
C. Ordinary manhole cannot be built
D. Two sewer lines intersect
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In 1000 kg of sewage, the total solids approximate___________________?
A. 0.5 to 1.0 kg
B. 1 kg to 2.0 kg
C. 5 kg to 7.5 kg
D. 7.5 kg to 10 kg
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Before discharging the foul sewage into rivers, it is generally treated by_____________________?
A. Screening
B. Sedimentation
C. Oxidation
D. All the above
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Aerobic activity is maximum_______________?
A. In freshly produced sewage
B. At sewer pipes
C. In sewer treatment plants
D. None of these
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Sewer manholes are generally provided at________________?
A. The change of gradient
B. The change of direction
C. The junctions of sewers
D. All of these
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The gas evolved in sewers is________________?
A. Carbondioxide
B. Hydrogen sulphide
C. Methane
D. All of these
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If a paper moistened with lead acetate for five minutes when placed in manhole turns black. The sewer certainly contains__________________?
A. Hydrogen sulphide
B. Carbon dioxide
C. Methane
D. Oxygen
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The sewer which transports the sewage to the point of treatment, is called________________?
A. House sewer
B. Out-fall sewer
C. Branch sewer
D. Main sewer
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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
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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
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Word of the Day
26 Jul
Simultaneously
at the same time.
ایک ہی وقت میں، ایک ساتھ، بیک وقت

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