The major part of the organic matter in the sewage water is decomposed in :

In the biological treatment for sewage , microbes are used for the reduction of the organic matter in the sewage water which are held together by fungal filament to form mesh like structures . These are called as :

In the biological treatment for sewage , microbes are used for the reduction of the organic matter in the sewage water which are held together by fungal filament to form mesh like structures . These are called as :

The amount of organic matter in sewage water can be estimated by

The amount of biodergradable organic matter in sewage water can be estimated by measuring

The amount of biodergradable organic matter in sewage water can be estimated by measuring

The amount of biodergradable organic matter in sewage water can be estimated by measuring

It is possible to estimate the amount of organic matter in sewage water by measuring biochemical oxygen demand. Can you explain how ?

Assertion: Discharge of sewage into river results into a sharp details in disolved oxygen Reason:- Micro-organisms invovled in biodegradation of organic matter in the reciving water body produce a lot of oxygen to facilitate degration of organic matter.