BOD test or Biological Oxygen Demand test is carried out for measuring –

Air pollution

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Water pollution

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Noise pollution

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Soil pollution

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Solution

The correct option is B Water pollution
Biochemical Oxygen Demand (BOD, also called Biological Oxygen Demand) is the amount of dissolved Oxygen needed by aerobic biological organisms to break down organic material present in a given water sample at certain temperature over a specific time period. A low BOD is an indicator of good quality water, while a high BOD indicates polluted water.

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