BOD measures the _____.

Amount of bacteria in a given sample of water

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Amount of algae being decomposed in a given sample

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Amount of oxygen bacteria need to decompose organic matter in a given sample

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Amount of oxygen bacteria need to decompose organic matter in a given sample in a fixed period of time

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Solution

The correct option is D Amount of oxygen bacteria need to decompose organic matter in a given sample in a fixed period of time

Biochemical oxygen demand (BOD) is a measure of how much organic pollution is in water. The BOD test measures the amount of dissolved oxygen in water that is used up due to the breakdown of organic pollutants, such as sewage, in a certain number of days.

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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:

Q. Read the following statements (A-D) related to Biochemical Oxygen Demand (BOD) and identify the correct option stating true (T) and false (F).

A. Biochemical oxygen demand is defined as the amount of dissolved oxygen needed by microorganisms in decomposing the inorganic wastes.
B. Greater the BOD of waste water, the higher is the amount of organic matter present.
C. The BOD increases with time as organic matter gets decomposed.
D. Sewage water is treated till the BOD is reduced

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. Biochemical Oxygen Demand, (BOD) is a measure of organic material present in water. BOD of less than 5 ppm indicates a water sample to be:

Q. Described below are the three steps in the process of how eutrophication leads to total destruction of aquatic life. Choose the option which has the correct sequence of these steps.
i) Algae die off, hence a large amount of organic matter is released.
ii) Bacteria begin to degrade organic matter, leading to a decrease in dissolved oxygen.
iii) Increase in nutrient concentrations causes a sudden growth spurt in algae.

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