Biochemical Oxygen Demand, (BOD) is a
measure of organic material present in water. BOD
value less than 5 ppm indicates a water sample
to be __________.
(a) rich in dissolved oxygen
(b) poor in dissolved oxygen
(c) highly polluted
(d) not suitable for aquatic life
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Answer:
b. will correct answer
Answered by
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Answer:
(a) The total amount of oxygen consumed by micro-organisms (bacteria) in decomposing organic matter present in certain volume of a sample of water is called Biochemical Oxygen Demand (BOD) of the water. Water considered to be pure if it has BOD less than 5 ppm whereas highly polluted water has BOD more than 17 ppm.
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