The relative stability of a sewage sample, whose dissolved oxygen is same as the total oxygen required to satisfy BOD, is______________?

Related Mcqs:

Percentage of bacterial load that can be removed from water by the process of plain sedimentation is about_______________?

A. 10 to 25 B. 50 C. 75 D. 100...

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...

The pipe which is used to carry the discharge from sanitary fittings like bath rooms, kitchens etc. is called_______________?

A. waste pipe B. soil pipe C. vent pipe D. antisiphonage pipe...

As compared to rapid sand filters, slow sand filters give______________?

1) slower filtration rate 2) higher filtration rate 3) lesser efficiency in removal of bacteria 4) higher efficiency in removal of bacteria The correct answer is? A. (1) and (2) B. (2) and (3) C. (1) and (4) D. (2) and (4)...

Which of the following is not a water borne disease ?

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