What is the full form of CBOD?

AComparative Biochemical Oxygen Demand

BCommon Biochemical Oxygen Demand

CCarbonaceous Biochemical Oxygen Demand ✓ Correct

DClassified Biochemical Oxygen Demand

Correct answer: (C) Carbonaceous Biochemical Oxygen Demand

Explanation

CBOD stands for Carbonaceous Biochemical Oxygen Demand, measuring oxygen used to break down carbon-based matter.

Comparative biochemical oxygen demand is not a recognised water-quality term.

Common biochemical oxygen demand is not the standard expansion.

Classified biochemical oxygen demand does not name a real parameter.

CBOD excludes the oxygen demand from nitrogen compounds, unlike total BOD.

It helps assess the organic pollution load in wastewater and rivers.

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