A higher biochemical oxygen demad in a particular segment of a river indicates that

Question

A higher biochemical oxygen demad in a particular segment of a river indicates that

A higher biochemical oxygen demad in a particular segment of a river indicates that
A. the segment is free from pollution
B. the segment is highly polluted
C. aquatic life has started flourishing
D. the river has high number of aquatic animals

Monjur Alahi

4 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - B
Biochemical oxygen demand or BOD is the oxygen required for microbial decomposition of a unit mass of organic remains. The degree of impurity of water due to organic matter is measured in terms of BOD. A higher BOD of a river indicates that water is highly polluted.

4 views Answered 2023-02-05 15:29