The detention period for oxidation ponds is usually kept as______________?

Related Mcqs:

The population of a town in three consecutive years are 5000, 7000 and 8400 respectively. The population of the town in the fourth consecutive year according to geometrical increase method is________________?

A. 9500 B. 9800 C. 10100 D. 10920...

Average rate of water consumption perhead per day as per Indian Standard is______________?

A. 100 litres B. 135 litres C. 165 litres D. 200 litres...

Facultative bacteria are able to work in________________?

A. presence of oxygen only B. absence of oxygen only C. presence as well as in absence of oxygen D. presence of water...

The minimum dissolved oxygen which should always be present in water in order to save the aquatic life is______________?

A. 1 ppm B. 4 ppm C. 10 ppm D. 40 ppm...

Which of the following is not a water borne disease ?

A. dysentery B. cholera C. typhoid D. maleria...