Civil Engineering MCQAE Level Civil Engineering
The 5-day BOD at 20 C is a measure of:
Environmental EngineeringEnvironmental EngineeringHARD
Choose the correct answer
A
total dissolved solids
B
hardness only
C
oxygen needed for biochemical oxidation of biodegradable organic matter in five days
D
chloride concentration
Correct Answer
C. oxygen needed for biochemical oxidation of biodegradable organic matter in five days
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BOD5 represents the oxygen consumed by microorganisms in stabilising biodegradable organic matter under standard conditions.
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