If a paper moistened with lead acetate for five minutes when placed in manhole turns black. The sewer certainly contains__________________?

Related Mcqs:

Pick up the correct statement from the following ?

A. Small sewers are cleaned by flushing B. Medium sewers are cleaned by cane rodding C. Medium sewers may be cleaned by pills D. All the above...

In a trickling filter_________________?

A. Filtration process is used B. Biological action is used C. Neither A. nor B. D. Both A. and B....

The spacing of bars for perforations in coarse screens used for the treatment of sewage, is ____________________?

A. 20 mm B. 30 mm C. 40 mm D. 50 mm...

Boussinesq’s equation for ascertaining unit pressure at a depth on sewers due to traffic loads, is__________________?

A. pt = 3H3p/2 Z5 B. pt = 2H3p/3 Z5 C. pt = 3H3p/2Z5 D. pt = 2 3p/3Z5...

The ratio of depths at partial flo________________?

A. 1 – B. 1 – C. ½ (1 – D. ½ (1 –...