BOD stands for____________.

Answer

**Step-by-Step Solution:**

1. **Understanding the Acronym BOD**: The question asks for the full form of the acronym "BOD".

2. **Identifying the Meaning**: BOD is commonly used in environmental chemistry and refers to a specific measurement related to water quality.

3. **Full Form of BOD**: The full form of BOD is "Biochemical Oxygen Demand".

4. **Explanation of Biochemical Oxygen Demand**:
- BOD measures the amount of oxygen that microorganisms will consume while decomposing organic matter in water.
- It is an important parameter for assessing the level of pollution in water bodies.

5. **BOD Values**:
- Pure water typically has a BOD value of around 5 parts per million (ppm).
- Polluted water usually has a BOD value greater than 17 ppm, indicating higher levels of organic matter and pollution.

**Final Answer**: BOD stands for Biochemical Oxygen Demand.

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