High biological oxygen demand indicates __________.

Environmental Science
Aroma Ann0

A. absence of microbial pollution
B. moderate microbial pollution
C. intense level of microbial pollution
D. all of these

BOD indicates the amount of putrescible organic matter present in water. Therefore, a low BOD is an indicator of good quality water, while a high BOD indicates polluted water. Dissolved oxygen (DO) is consumed by bacteria when large amounts of organic matter from sewage or other discharges are present in the water.

Related Mcqs:

  1. A high Biological Oxygen Demand (BOD) indicates that ___________.
  2. Biological Oxygen Demand (BOD) is a measure of:?
  3. Which of the following is the use of lichens in case of pollution??
  4. A river with high BOD value is __________?
  5. The increase of temperature
  6. The unfavorable alteration of environment due to human activities is termed as __________?
  7. Oil spills are a source of pollution for __________.
  8. The presence of high coliform counts in water indicates __________?
  9. The Parliament enjoys legislative power over subjects in __________?
  10. The presence of solid, liquid or gaseous compounds, which may not be normally present, or in excess concentration in the atmosphere is called________________?

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