Correct option is B
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Question
A waste water sample of 2 ml is made upto 300 ml in BOD bottle with distilled water. Initial DO of the sample is 8mg/l and after 5 days it is 2mg/l. What is its BOD?
Similar Questions
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The minimum density (g/cc) of corrugated and semi-corrugated asbestos cement sheets considered acceptable for construction purposes by the Indian standard is:
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Statement
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Statement
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