Related Questions

Presence of volatile compounds like gasoline, oil, alcohol, ether etc. in municipal sewers may cause
A Explosion
B Non biodegradable foam
C Undesirable plant growth
D Corrosion
The gas which may cause explosion in sewers, is
A Carbondioxide
B Methane
C Ammonia
D Carbon monoxide
For large sewers, maximum distance between manholes may be
A 50 m
B 100 m
C 200 m
D 300 m
For trunk and out-fall, the type of sewers generally used, is
A Standard egg shaped
B Circular shaped
C Horse shoe shaped
D Parabolic shaped
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 self cleansing velocity for all sewers in India is usually
A Less than 1.0 m/sec
B 1.0 m/sec to 1.2 m/sec
C 1.5 m/sec to 2.0 m/sec
D 3.0 m/sec to 3.5 m/sec
The main disadvantage of cement concrete sewers is
A Less strength
B Difficulty in construction
C Difficulty in transportation due to heavy weight
D Less life
A sewer that receives the discharge of a number of house sewers is called
A House sewer
B Lateral sewer
C Intercepting sewer
D Sub-main sewer
Laying of sewers is usually done with the help of
A A Theodolite
B A compass
C Sight rails and boning rods
D A plane table
The minimum and maximum diameters of sewers shall preferably be
A 15 cm and 100 cm
B 15 cm and 300 cm
C 30 cm and 450 cm
D 60 cm and 300 cm

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