Read the following statements and select the correct option.
Statement 1 : BOD represents the amount of dissolved oxygen that would be consumed if all the organic matter in one litre of water were oxidised by microorganisms.
Statement 2 : High value of BOD indicates that water is highly polluted by organic matter.

Options

A. Both statements 1 and 2 are correct
B. Statement 1 is correct but statement 2 is incorrect
C. Statement 1 is incorrect but statement 2 is correct
D. Both statements 1 and 2 are incorrect

Explanation

To solve the question, we need to evaluate the two statements regarding Biochemical Oxygen Demand (BOD) and determine their correctness.

### Step-by-Step Solution:

1. **Understanding BOD**:
- BOD stands for Biochemical Oxygen Demand. It measures the amount of dissolved oxygen required by microorganisms to decompose organic matter in a water sample over a specific period and at a specific temperature.

2. **Evaluating Statement 1**:
- Statement 1 claims that BOD represents the amount of dissolved oxygen that would be consumed if all the organic matter in one liter of water were oxidized by microorganisms.
- This statement is correct because BOD indeed quantifies the oxygen demand for the breakdown of organic material in water.

3. **Evaluating Statement 2**:
- Statement 2 states that a high value of BOD indicates that water is highly polluted by organic matter.
- This statement is also correct. A high BOD value signifies a high level of organic pollutants in the water, as it indicates that more oxygen is required for microbial decomposition.

4. **Conclusion**:
- Both statements are correct. Therefore, the correct option is that both Statement 1 and Statement 2 are true.

### Final Answer:
Both Statement 1 and Statement 2 are correct.

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