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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is a surrogate in analytical analysis?
💡 Hint: Think about what aids in validating the analyte's presence.
Question 2
Easy
Why do we concentrate a sample before analysis?
💡 Hint: Higher concentration leads to better detectability.
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 does a surrogate do in analytical chemistry?
- Confirms the calibration
- Mimics the analyte behavior
- Improves extraction efficiency
💡 Hint: Remember its role in validation.
Question 2
True or False: Calibration is unnecessary if you know the analyte's exact concentration.
- True
- False
💡 Hint: Calibration's purpose is to ensure accuracy.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Given a sample, you added 200 nanograms of surrogate but recovered only 120 nanograms. What is the recovery efficiency?
💡 Hint: Use the formula for recovery efficiency.
Question 2
You performed an extraction from a 2-liter sample but could only concentrate to 20 milliliters. How would you calculate the concentration factor?
💡 Hint: Remember how concentrations relate to volumes in your calculations.
Challenge and get performance evaluation