The amount of the oxygen that would be consumed to oxidize all the inorganic matter in one liter of water
B
The amount of the oxygen that would be consumed if all the organic matter in one liter of water were oxidised by bacteria.
C
The amount of the oxygen that would be consumed if all the inorganic matter in one liter of water were oxidised by bacteria.
D
The amount of the oxygen that would be produced if all the organic matter in one liter of water were oxidised by bacteria.
Text Solution
AI Generated Solution
The correct Answer is:
To solve the question "BOD refers to:", we need to understand what BOD stands for and its significance in the context of water quality and organic matter decomposition.
### Step-by-Step Solution:
1. **Definition of BOD**:
- BOD stands for Biochemical Oxygen Demand. It is a measure of the amount of oxygen that microorganisms will consume while decomposing organic matter in water.
2. **Understanding the Context**:
- When organic matter (like sewage) is present in water, bacteria break it down. This process requires oxygen. The more organic matter there is, the more oxygen the bacteria will need.
3. **Measurement**:
- BOD is typically measured in terms of the amount of oxygen consumed per liter of water over a specific period, usually five days at 20 degrees Celsius.
4. **Analyzing the Options**:
- **Option 1**: "The amount of oxygen that would be consumed to oxidize all the inorganic matter" - This is incorrect because BOD refers specifically to organic matter.
- **Option 2**: "The amount of oxygen that is consumed if all organic matter in one liter of water were oxidized by bacteria" - This is correct as it accurately describes BOD.
- **Option 3**: "The amount of oxygen would be consumed if all the, not inorganic, this would be organic one" - This is incorrect as it is poorly phrased and does not provide a clear definition.
- **Option 4**: "The amount of oxygen that would be produced that won't be consumed by bacteria to degrade the or to oxidize all organic matter present in one liter of water" - This is incorrect as it misrepresents the concept of BOD.
5. **Conclusion**:
- The correct answer is **Option 2**: "The amount of oxygen that is consumed if all organic matter in one liter of water were oxidized by bacteria."
