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NEET2011BotanyEnvironmental IssuesActual

Assertion : Amount of organic biodegradable compounds present in water is measured by the BOD of that water. Reason : During biodegradation of biodegradable organic compounds, oxygen is released by bacteria.

Options

  1. AIf both assertion and reason are true and reason is the correct explanation of assertion
  2. BIf both assertion and reason are true but reason is not the correct explanation of assertion
  3. CIf assertion is true but reason is false
  4. DIf both assertion and reason are false.

Correct answer

C. If assertion is true but reason is false

Step-by-step solution

Organic biodegradable (i.e. they can be degraded by decomposers) pollutants in water are measured by BOD. BOD ( biological oxygen demand) is the oxygen demanded or required by bacteria and other decomposers to oxidise pollutants.

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