Question

What is the BOD value of clean water?

• A. More than 17 ppm
• B. Exactly 10 ppm
• C. Between 5 ppm and 17 ppm
• D. Below 5 ppm

Answer 1

Answer:

D. Below 5 ppm

• The BOD value of clean water is below 5 ppm.

• The BOD value of polluted water is more than 17 ppm.

• Nutrient-rich water bodies lead to excessive plant growth, resulting in oxygen depletion, which kills aquatic life and leads to a loss of biodiversity. This phenomenon is known as Eutrophication.