A sewer pipe contains 1 mm sand particles of specific gravity 2.65 and 5 mm organic particles of specific gravity 1.2, the minimum velocity required for removing the sewerage, is_____________________?
The sewer which collects the discharge from a collecting system and delivers it to a treatment plant, is known_____________________?
The most dangerous pollutant in vehicular emissions is____________________?
For laying a sewer line in a trench of 2 m width, an offset line is marked on the ground parallel to the given centre line at a distance of___________________?
The asbestos cement pipes are generally laid___________________?
A safety lamp when inserted in the upper portion of a manhole causes flames. It indicates the presence of______________?
If the depletion of oxygen is found to be 2.5 mg/litre after incubating 2.5 ml of sewage diluted to 250 ml for 5 days at 20°C, B.O.D. of the sewage is_________________?
A circular sewer section is preferred to because__________________?
In a city the ratio of the drainage to sewage is 20, the percentage discharge passing through non-monsoon periods, is_____________________?
In case of sewer lines_________________?
