Practice Dilution Methods For Bod Analysis (4) - Analysis Methods – Introduction and Water Quality Parameters

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10 questions

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6 questions · about 4 min · pass mark 70%. Hints available.
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4 questions · about 3 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What does BOD stand for?
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Consider what it measures in the water.
Question 2.
Why is dilution necessary for BOD testing?
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Think about accuracy in measurement.
3Question 3.
What does BOD measure?
- Oxygen in the air
- Oxygen consumed by microorganisms
- Oxygen in food
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Focus on what it assesses in water.
4Question 4.
True or False: Dilution is not necessary if the BOD is below 6 mg/L.
- True
- False
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Think about when we use dilution.
Question 5.
If a wastewater sample has an initial DO of 7 mg/L and a final DO of 0.5 mg/L after five days, and the sample was diluted by 10x, calculate the final BOD.
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Review how dilution affects the BOD calculation.
Question 6.
Discuss how temperature variations might affect the BOD measurement results in different environmental settings.
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Think about the relationship between microbes and temperature variations.

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