Extent to which water is polluted with organic compound
Amount of carbon monoxide inseparably combined with haemoglobin
Amount of oxygen needed by green plants during night
A
Industrial wastes poured into water bodies
B
Amount of carbon monoxide inseparably combined with haemoglobin
C
Extent to which water is polluted with organic compound
D
Amount of oxygen needed by green plants during night
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Solution
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Biochemical oxygen demand (BOD) is the amount of dissolved oxygen needed by aerobic biological organisms in a body of water to break down organic material present in a given water sample at certain temperature over a specific time period. Itisusedasameasureofthedegreeofwaterpollution.
Therefore, the correct answer is option B.
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