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Dental General f1519940

Strength of sewage is best expressed by

A
E-coli count
B
Suspended particles
C
Chemical oxygen demand
D
Biological oxygen demand
High-Yield Explanation
The most important test carried out on sewage. Sewage with a BOD value of: 300mg/I (300 ppm) or above is termed as strong.  100 mg/I (100 ppm) or below is termed as weak.

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