🏗️Civil Engineering MCQs
Civil Engineering MCQs
479 MCQs91
The porosity of sediments in sewer pipes, is usually taken as___________________?
A0.010
B0.011
C0.012
D0.013
92
The presence of free ammonia in sewage, is detected by___________________?
ABoiling
BAdding potassium permanganate
CAdding sulphuric acid
DPhenol-di-sulphuric acid
93
The digested sludge from septic tanks, is removed after a maximum period of__________________?
A3 years
B3.5 years
C4 years
D5 years
94
Disposal to sewage in large cities, is done in__________________?
AIrrigation
BDilution
COxidation
DPurification
95
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_____________________?
A204 cu.m
B208 cu.m
C212 cu.m
D216 cu.m
96
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_________________?
ABoth A and R are true and R is the correct explanation of A
BBoth A and R are true but R is not a correct explanation of A
CA is true but R is false
DA is false but R is true
97
The algae dies out in the zone of_____________________?
ADegradation
BActive decomposition
CRecovery
DCleaner water
98
For design purposes, the normal rate of infiltration of ground water into the sewer, is___________________?
A500 litres/km/cm
B1000 litres/km/cm
C1500 litres/km/cm
D2000 litres/km/cm
99
The drop man holes are generally provided in sewers for____________________?
AIndustrial areas
BLarge town ships
CHilly town ships
DCities in plains
100
A rain sanitary sewer is constructed to carry_________________ ?
ASanitary sewage
BStorm sewage
CSurface water
DGround water