Biological Oxygen Demand (BOD) can be defined as:

the amount of oxygen required by bacteria to break down the organic matter of a sample of water

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the amount of chemicals required to break down the organic matter of a sample of water

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the amount of phosphate required to oxidise the organic matter of a sample of water

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the amount of organic matter present in the given sample of water

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Solution

The correct option is A the amount of oxygen required by bacteria to break down the organic matter of a sample of water
BOD refers to the dissolved oxygen that the microorganisms like bacteria need to oxidize, means to break down inorganic and organic matter in water. It is a measure of water quality.

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Similar questions

The amount of oxygen required by bacteria to break down the organic matter present in a certain volume of a sample of water 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. is a measure of amount of dissolved oxygen required for decomposition of waste organic matter from water

500 m L

of a sample of water required

19.6 m g

K_{2} C r_{2} O_{7}

for the oxidation of dissolved organic matter in it in the presence of

H_{2} S O_{4}

. The

C O D

of water sample is:

Q. It is possible to estimate the amount of biodegradable organic matter in sewage water by measuring Biochemical Oxygen Demand (BOD). Can you explain how?

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