state gov UPSSSC Junior Assistant Mock Test Series 2025 (New) General Science Biology Ecology & Environment
Biological Oxygen demand (BOD) measures
1
The amount of oxidizable organic matter present in water body
2
The amount of oxygen dissolved in water, air and soil.
3
The amount of total inorganic matter present in water body
4
The amount of organic and inorganic matter present in water body.
5
None of the above