BOD values of different samples of water are given: Sample A B O D = 5 , Sample B B O D = 12 , Sample C B O D = 2 , Sample D B O D = 7 Which of the above-given sample will have the least number of Daphnia ?

Question

BOD values of different samples of water are given: Sample A B O D = 5 , Sample B B O D = 12 , Sample C B O D = 2 , Sample D B O D = 7 Which of the above-given sample will have the least number of Daphnia ?, A, B, C, D

MARKS App · Accepted Answer

Daphnia is an indicator of freshwater thus it is not found in the polluted water body. Biochemical oxygen demand is the indirect measurement of organic pollutant present in the water body. Higher the value of BOD, higher is its polluting potential.

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