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Assertion: The biological oxygen demand (BOD) is a measure of the amount of organic matter present in water.
Reasoning: The BOD is the amount of oxygen required by microorganisms to decompose the organic matter present in water, and it is a widely used parameter for assessing water quality.
Both assertion and reasoning are true, and the reasoning is the correct explanation of the assertion.
Both assertion and reasoning are true, but the reasoning is not the correct explanation of the assertion.
The assertion is true, but the reasoning is false.
Both assertion and reasoning are false.
Answers (1)
The BOD is a measure of the amount of organic matter present in water, which is an essential parameter for assessing the quality of natural water bodies. Organic matter can come from various sources such as wastewater, agricultural runoff, and other anthropogenic activities. The BOD value provides an indication of how much oxygen is required to decompose the organic matter present in the water.
The reasoning provided in the assertion is accurate and explains why the BOD is a measure of the amount of organic matter present in water. When organic matter is present in water, microorganisms start to decompose it by using the available oxygen. The more organic matter present in the water, the more oxygen microorganisms require to decompose it, which leads to a higher BOD value. Therefore, the BOD is a widely used parameter for assessing water quality and determining the degree of pollution caused by organic matter.
In conclusion, both the assertion and reasoning are true, and the reasoning correctly explains the assertion.
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