The water pollution in a river, particularly organic pollution, is often measured by the amount of dissolved oxygen (DO). The decomposition of organic matter by microorganisms consumes dissolved oxygen. A low level of dissolved oxygen indicates that the water is heavily polluted and cannot support aquatic life that requires oxygen.
The water pollution in river is measured by the dissolved amount of
Asked in UPPCS Prelims 1998 · Topic: Pollution (Water Pollution: Sources, common pollutants, water quality indicators (BOD, COD, DO), effects, control measures.)
More Environment and Ecology questions
- Physico-chemical characteristics of water in water sources undergo changes due to
- Nano filtration is the technique developed in france for water purification in which water s filtered through special membrane with porosity of:
- Choose the incorrect statement.
- In which year did the first Common Effluent Treatment Plant (CETP) of India commence in Andhra Pradesh to cater to the needs of the small-scale industries ?
- The widely-used aerobic suspension type of liquid waste treatment system is
- Black foot disease is caused by
- Which pollution causes Jaundice?
- Nalgonda method was developed by Indian Scientist to remove which chemical species from water?