Practice Sample Analysis Techniques - 6 | 5. Introduction - part B | Environmental Quality Monitoring & Analysis, - Vol 2
K12 Students

Academics

AI-Powered learning for Grades 8–12, aligned with major Indian and international curricula.

Professionals

Professional Courses

Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.

Games

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

6 - Sample Analysis Techniques

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.

Learning

Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is a surrogate in sample analysis?

💡 Hint: Think of what assists in measuring the main component.

Question 2

Easy

Which solvent is commonly used for extraction in this context?

💡 Hint: Remember the solvent often mentioned in extraction processes.

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 adding a surrogate to a sample?

  • To dilute the sample
  • To mimic the analyte behavior
  • To increase extraction time

💡 Hint: Think about what helps measure the analyte accurately.

Question 2

True or False: Calibration ensures accurate quantification of analytes.

  • True
  • False

💡 Hint: It's all about measurement accuracy.

Solve 2 more questions and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

You are given a sample containing an unknown concentration of an analyte. You add 200 micrograms of surrogate and recover 180 micrograms after analysis. If your calibration response indicates that the recovered analyte corresponds to 150 nanograms, what is the recovery efficiency of the surrogate?

💡 Hint: Think about how you express recovery efficiency as a percentage.

Question 2

In an analysis, you extract from a 100ml sample and recover 60ml of hexane, which is concentrated down to 5ml, resulting in a measured instrument response of 240,000 units. If the calibration curve yields a formula of response = 120,000 * m, what is the mass of the analyte obtained?

💡 Hint: Use your calibration equation to find mass based on response.

Challenge and get performance evaluation