Biochemical Oxygen Demand (BOD) is the oxygen in milligrams required for 5 days in one litre of water at 20 degree centigrade for the micro organisms to metabolise organic wastes present in water.
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Similar Questions
Q1
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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Q2
Biochemical Oxygen Demand(BOD) value can be a measure of water pollution caused by the organic matter. Which of the following statements is correct?
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Q3
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
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Q4
10mL of water required 1.47mg of K2Cr2O7 (mol. wt. =294) for oxidation of dissolved organic matter. C.O.D (Chemical Oxygen Demand) of water is?
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Q5
Assertion :Amount of biodegradable present in water is measured by BOD organic matter. Reason: During biodegradation of organic compounds, oxygen is released.