Professional Courses
Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Categories
Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the purpose of a laboratory control sample?
💡 Hint: Think about how we check for accuracy in experiments.
Question 2
Easy
Define volatilization in the context of environmental analysis.
💡 Hint: Consider how liquids change to gas.
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 a laboratory control sample?
- A sample not used in analysis
- A sample used to check the recovery rate of analytes
- A type of contamination
- None of the above
💡 Hint: What sample is essential to understand recovery rates?
Question 2
True or False: Volatilization is a process that can lead to loss of analytes.
- True
- False
💡 Hint: Consider what happens when a liquid evaporates.
Solve 2 more questions and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
How can using glass versus plastic containers impact the analysis of organic compounds?
💡 Hint: Think about how different materials interact with different substances.
Question 2
Design an experiment utilizing a matrix spike. What steps would you follow, and how would you assess results?
💡 Hint: Remember the purpose of comparison to evaluate recovery efficiency.
Challenge and get performance evaluation