A. Stone ware pipes
B. Earthenware pipes
C. C.I. pipes
D. G.I. pipes
Related Mcqs:
- 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 - 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 - The pressure exerted by_____________?
A. The sewage when running full from inside, is called internal pressure
B. The internal pressure if any, causes tensile stress in the pipe material
C. Pressure sewers are designed to be safe in tension
D. All the above - Chlorination of water is done for the removal of____________________?
A. Bacterias
B. Suspended solids
C. Sediments
D. Hardness - The maximum spacing of manholes specified by Indian standard in sewers upto 0.3 m diameter is____________________?
A. 20 m
B. 30 m
C. 45 m
D. 75 m - The porosity of sediments in sewer pipes, is usually taken as___________________?
A. 0.010
B. 0.011
C. 0.012
D. 0.013 - The sewerage system originates from__________________?
A. House sewers
B. Lateral sewers
C. Branch sewers
D. Main sewers - The stone ware sewers_________________?
A. Are used for carrying sewage and drainage from houses
B. Are manufactured from clays and shale
C. After casting are dried and burnt at temperature 150°C, 700°C and 1200°C
D. All the above - Antisyphonage pipe is fitted_______________?
A. At the end of septic tanks
B. On manholes
C. With a W.C. trap
D. At the beginning of sewer line - In sewers the velocity of flow should not be_________________?
A. More than the self-cleansing velocity
B. Less than the self-cleansing velocity
C. Less than 10 m/sec
D. More than 20 m/sec
