A) the oxygen required for bacteria to grow in 1 Litre of effluent.
B) the amount of oxygen consumed if all the organic matter in 1000 mL of water were oxidised by bacteria
C) the amount of oxygen released if all the organic matter in 1000 mL of water were oxidised by bacteria
D) the amount of oxygen released when all the organic matter was consumed by bacteria in 1 litre of water
Correct Answer: B
Solution :
the amount of oxygen consumed if all the organic matter in 1000 mL of water were oxidised by bacteria
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