A laboratory analysis of a waste water sample indicated BOD of 750 mg L²¹ with rate constant (K) 0.20 day²¹ at 208C. The 5-day BOD at 208C is :

[A] 675 mg L²¹

[B] 650 mg L²¹

[C] 400 mg L²¹

[D] 600 mg L²¹

Answer & Explanation
Answer: 675 mg L²¹

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