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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is a surrogate in environmental analysis?
💡 Hint: Think about how we measure similar substances.
Question 2
Easy
Why is hexane used in the extraction of TSS?
💡 Hint: Consider properties of hexane relative to water.
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 the purpose of using a surrogate in TSS measurement?
- To increase the sample volume
- To estimate recovery efficiency
- To reduce extraction time
💡 Hint: Think about the role of surrogates.
Question 2
True or False: Hexane is used because it mixes well with water.
- True
- False
💡 Hint: Consider the properties of hexane in comparison to water.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A laboratory uses a balance with a minimum detection limit of 0.1 mg. Calculate the minimum sample volume required for a TSS concentration of 10 mg/L.
💡 Hint: Always use the relationship between mass and volume for calculations.
Question 2
A researcher finds that after extraction, they recover only 50% of the surrogate added (100 ng). How much TSS can they estimate was present initially if the ratio remains constant?
💡 Hint: Think about the relationship in recovery rates.
Challenge and get performance evaluation