Practice Use Of Dilution Water (4.1) - Analysis Methods – Introduction and Water Quality Parameters

Practice: Use of Dilution Water

Lesson 4.1Analysis Methods – Introduction and Water Quality Parameters

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9 questions

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6 questions · about 4 min · pass mark 70%. Hints available.
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3 questions · about 2 min · pass mark 70%. Hints available.
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6 sample questions

Question 1.
What is the purpose of dilution water in BOD testing?
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Why do we dilute high concentrations?
Question 2.
Define BOD.
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What does BOD stand for?
3Question 3.
What is the primary purpose of using dilution water in BOD analysis?
- To increase the organic concentration
- To decrease the concentration to measurable levels
- To eliminate nitrogen in the sample
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Think about why we might need to adjust concentrations in testing.
4Question 4.
True or False: The BOD of dilution water should not be accounted for in BOD calculations.
- True
- False
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Why is the dilution water's quality critical?
Question 5.
A water sample has an initial DO of 12 mg/L and after dilution shows a final DO of 3 mg/L. If the dilution factor used was 10, calculate the BOD and account for the fact that your dilution water had a BOD of 1 mg/L.
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Don't forget to subtract the BOD of the dilution water!
Question 6.
Discuss the potential implications of using a dilution water source with unknown organic pollution levels. What steps could you take to verify its purity?
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Why is the source of your dilution water so critical?

5 more questions in this section. Enroll free to practise them all.