1.

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 _____

Answer»

rich in DISSOLVED oxygen
poor in dissolved oxygen
highly polluted
not suitable for AQUATIC life

Solution :BOD less than 5 ppm shows that water is pure, i.e., it is rich in dissolved oxygen


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