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B.O.D is related to...

B.O.D is related to

A

detergents

B

putrescibility

C

inorganic pollutants

D

organic pollutants.

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The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding BOD**: BOD stands for Biological Oxygen Demand. It is a measure of the amount of oxygen that microorganisms will consume while decomposing organic matter in water. 2. **Identifying the Context**: BOD is specifically related to the decomposition of organic pollutants present in water bodies. This means it is an indicator of the organic pollution level in a water body. 3. **Analyzing the Options**: - **Option 1: Detergents** - Detergents can contribute to pollution but BOD specifically measures the oxygen demand due to organic matter decomposition, not detergents directly. - **Option 2: Protraceability** - This term relates to the ability to decay or spoil, which is not directly related to BOD. - **Option 3: Inorganic Pollutants** - BOD does not measure inorganic pollutants as they do not require biological decomposition. - **Option 4: Organic Pollutants** - This is the correct option, as BOD is directly related to the amount of organic matter that needs to be decomposed by microorganisms. 4. **Conclusion**: Based on the analysis, BOD is primarily concerned with organic pollutants, as these are the substances that require oxygen for microbial decomposition. **Final Answer**: BOD is related to organic pollutants (Option 4). ---
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