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In which one of the following the BOD (Biochemical Oxygen Demand) of sewage (S), distillery effluent (DE), paper mill effluent (PE) and sugar mill effluent (SE) have been arranged in ascending order?

  1. A
    SE < S < PE < DE
  2. B
    SE < PE < S < DE
  3. C
    PE < S < SE < DE
  4. D
    S < DE < PE < SE

Solution & Step-by-step Explanation

Biochemical Oxygen Demand (BOD) indicates the amount of organic matter in water. Distillery effluent has the highest BOD (), followed by Paper mill effluent and Sugar mill effluent. Domestic sewage typically has a lower BOD compared to concentrated industrial organic wastes. The correct ascending order based on typical concentrations is or similar variations; however, in standard competitive contexts for this specific paper, option S < PE < SE < DE is the logic, though the provided options have variations. Re-evaluating standard values: , , , .

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In which one of the following the BOD (Biochemical Oxygen Demand) of sewage (S), distillery effluent (DE), paper mill effluent (PE) and sugar mill effluent (SE) have been arranged in ascending order?
A
SE < S < PE < DE
B
SE < PE < S < DE
C
PE < S < SE < DE
D
S < DE < PE < SE

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