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(A) $BOD$ (Biochemical Oxygen Demand) refers to the amount of oxygen that would be consumed if all the organic matter in one liter of water were oxidi

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$II < III < I$

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(A) $BOD$ (Biochemical Oxygen Demand) refers to the amount of oxygen that would be consumed if all the organic matter in one liter of water were oxidized by bacteria.$1$. Sewage water contains a high amount of organic matter,leading to a very high $BOD$.$2$. Tap water contains some organic matter but significantly less than sewage,resulting in a low $BOD$.$3$. Distilled water is purified and contains almost no organic matter,resulting in a $BOD$ value near zero.Therefore,the ascending order of $BOD$ is: $II$ (Distilled water) $< III$ (Tap water) $< I$ (Sewage water).

Arrange the following in ascending order based on their $BOD$ value:
$I -$ Sewage water,$II -$ Distilled water,$III -$ Tap water

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Arrange the following in ascending order based on their $BOD$ value:$I -$ Sewage water,$II -$ Distilled water,$III -$ Tap water