'Biological Oxygen Demand' (BOD) is a measure of

Industrial wastes poured into water bodies.

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Extent to which water is polluted with organic compounds.

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Amount of carbon monooxide inseparably combined with haemoglobin.

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Amount of oxygen needed by green plants during night.

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Solution

The correct option is B Extent to which water is polluted with organic compounds.
Biochemical oxygen demand (BOD) is the amount of dissolved oxygen needed by aerobic biological organisms in a body of water to break down organic material present in a given water sample at certain temperature over a specific time period. The BOD measures the amount of oxygen consumed by biochemical oxidation of waste contaminants. The total amount of oxygen consumed when the biochemical reaction is allowed to proceed to completion is called as the ultimate BOD. The BOD is universally adopted as a measure of relative pollution effect.

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Similar questions

Q. BOD or Biological Oxygen Demand is the level of oxygen needed in the water body for organisms to survive.

The amount of O₂ required by bacteria in water to breakdown wastes into simple inorganic substances is called

Q32 Consider the following statements,

i) The chemical oxygen demand (COD) test is commonly used to indirectly measure the amount of organic compounds in water.

ii) Biochemical oxygen demand is the amount of dissolved oxygen needed by aerobic biological organisms to break down organic material present in a given water sample at certain temperature over a specific time period.

Which of the above statements is/are correct?

Q. Assertion :Amount of biodegradable organic matter present in water is measured by BOD of water. Reason: During biodegradation of organic compounds, oxygen is released.

Q. Assertion :Amount of biodegradable present in water is measured by BOD organic matter. Reason: During biodegradation of organic compounds, oxygen is released.

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