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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What does BOD stand for?
💡 Hint: Think about what it measures in water.
Question 2
Easy
What is the role of microorganisms in BOD testing?
💡 Hint: Consider the biological aspect of degradation.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is BOD primarily used to measure?
- Inorganic matter
- Biodegradable organic matter
- Heavy metals
💡 Hint: Remember the focus of what BOD assesses.
Question 2
True or False: COD only measures biodegradable organic substances.
- True
- False
💡 Hint: Consider the broader scope of COD.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
You are testing a river with an initial DO of 7.5 mg/L and a 5-day DO of 1.0 mg/L. What is the BOD? If the sample was diluted by a factor of 10, what is the corrected BOD?
💡 Hint: Remember to take into account the dilution factor when calculating the final BOD.
Question 2
A water sample has a BOD result that is unusually high. Discuss potential factors that might contribute to this result and what you would investigate further.
💡 Hint: Think critically about both biological and environmental factors.
Challenge and get performance evaluation