Civil Engineering MCQs

2965 MCQs  (Page 279 of 297)

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The presence of free ammonia in sewage, is detected by___________________?
A. Boiling
B. Adding potassium permanganate
C. Adding sulphuric acid
D. Phenol-di-sulphuric acid
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The porosity of sediments in sewer pipes, is usually taken as___________________?
A. 0.010
B. 0.011
C. 0.012
D. 0.013
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The minimum diameter of sewer to be adopted is_________________?
A. 10 cm
B. 12.5 cm
C. 15 cm
D. 25 cm
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The sewerage system consists of______________________?
A. House sewer
B. Lateral sewer
C. Branch sewer
D. All of these
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Oxidation process results in the formation of___________________?
A. Carbon dioxide
B. Nitrates
C. Sulphates
D. All the above
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The drop man holes are generally provided in sewers for____________________?
A. Industrial areas
B. Large town ships
C. Hilly town ships
D. Cities in plains
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For design purposes, the normal rate of infiltration of ground water into the sewer, is___________________?
A. 500 litres/km/cm
B. 1000 litres/km/cm
C. 1500 litres/km/cm
D. 2000 litres/km/cm
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The algae dies out in the zone of_____________________?
A. Degradation
B. Active decomposition
C. Recovery
D. Cleaner water
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Assertion A. : Discharging the effluents from the oxidation ponds just up stream of lakes or reservoirs is undesirable. Reason (R) : The discharged algae get settled in the reservoirs and cause anaerobic decomposition and other water qualities_________________?
A. Both a and r are true and r is the correct explanation of a
B. Both a and r are true but r is not a correct explanation of a
C. A is true but r is false
D. A is false but r is true
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The dimensions of a rectangular settling tank are: length 24 m, width 6 m and depth 3 m. If 2 hour detention period for tanks is recommended, the rate of flow of sewage per hour, is_____________________?
A. 204 cu.m
B. 208 cu.m
C. 212 cu.m
D. 216 cu.m
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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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