Before discharging the foul sewage into rivers, it is generally treated by_____________________?

Related Mcqs:

Which one of the following gases is most significant as air pollutant ?

A. Carbondioxide B. Oxygen C. Nitrogen D. Sulphur-dioxide...

The ratio of depths at partial flo________________?

A. 1 – B. 1 – C. ½ (1 – D. ½ (1 –...

The coagulant widely used for sewage treatment, is_________________?

A. Alum B. Ferric chloride C. Ferric sulphate D. Chlorinated copperas...

If D.O. concentration falls down to zero in any natural drainage, it indicates the zone of__________________?

A. Degradation B. Active decomposition C. Recovery D. Cleaner water...

For evaporation and measurement of settable solids, the apparatus used, is________________?

A. A jar B. A breaker C. A test tube D. An Imhoff cone...