Biochemical Oxygen Demand $(BOD)$ is the amount of oxygen required (in $ppm$):

  • A
    by anaerobic bacteria to breakdown inorganic waste present in a water body.
  • B
    for the photochemical breakdown of waste present in $1 \; m^{3}$ volume of a water body.
  • C
    by bacteria to break-down organic waste in a certain volume of a water sample.
  • D
    for sustaining life in a water body.

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Similar Questions

Which of the following statement$(s)$ is (are) incorrect reason for eutrophication?
$A$. excess usage of fertilisers
$B$. excess usage of detergents
$C$. dense plant population in water bodies
$D$. lack of nutrients in water bodies that prevent plant growth
Choose the most appropriate answer from the options given below:

The reaction of $.....$ with $O_3$ leads to a decrease in the concentration of ozone by approximately $40\%$.

What are the major causes of water pollution? Explain.

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The $10\%$ energy transfer law of food chain was given by

Have you ever observed any water pollution in your area? What measures would you suggest to control it?

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