Civil Engineering MCQAE Level Civil Engineering
COD is generally greater than BOD for the same wastewater because:
Environmental EngineeringEnvironmental EngineeringHARD
Choose the correct answer
A
COD ignores organics
B
BOD includes chloride only
C
COD is measured after five days only
D
chemical oxidants oxidise more substances than biological processes in BOD test
Correct Answer
D. chemical oxidants oxidise more substances than biological processes in BOD test
AI Detailed Explanation & IS Code Reference
Unlock the reasoning, formula path and code-linked notes inside your student dashboard.
COD measures oxygen equivalent of chemically oxidisable matter, including many non-biodegradable organics.
ScoreCardAI links this solution with subject, topic and difficulty signals so your scorecard can identify weak areas after a full mock test.
Concept shortcut
IS/IRC reference
Common trap
Practice more Civil Engineering questions
This MCQ belongs to AE Level Premium Test Series. Full tests include timed attempts, rank comparison and subject-wise analysis.