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BOD and COD

Dissolved oxy...

Question

Dissolved oxygen is dependent on the BOD

A

True

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B

False

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Solution

Dissolved oxygen (DO) is the amount of oxygen that is present in water.

BOD is a measurement of the amount of dissolved oxygen needed by aerobic microorganisms to break down organic material present in a given water sample at certain temperature over a specific period of time.

BOD is dependent on the dissolved oxygen.

BOD is calculated from the DO depletion

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Similar questions

Q. Which of the following indicates the high BOD in water?

A. Increased DO (dissolved oxygen)
B. Decreased DO (dissolved oxygen)
C. Absence of microbes
D. Presence of microbes

B O D_{5}

Q. Statement 1 : BOD represents the amount of dissolved oxygen that would be consumed if all the organic matter in one litre of water were oxidised by microorganisms.
Statement 2 : High value of BOD indicates that water is highly polluted by organic matter.

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

Q. Biochemical Oxygen Demand (BOD) measures organic material present in water. A sample of water has a BOD value of less than 5 ppm. This indicates that:

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