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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is diffusion?
💡 Hint: Think about how a drop of food dye behaves in water.
Question 2
Easy
Define porosity.
💡 Hint: Consider the water retention capability of soil.
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 diffusion result in?
- Movement from low to high concentration
- Movement from high to low concentration
- No movement
💡 Hint: Remember the food dye example!
Question 2
True or False: Effective diffusivity is unrelated to porosity.
- True
- False
💡 Hint: Think about how fluids navigate through porous materials.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A soil sample has a porosity of 0.4. If the diffusion coefficient for a substance in the fluid is 1.0 cm²/s, calculate its effective diffusion coefficient using the Millington-Quirk equation.
💡 Hint: Remember to apply the Millington-Quirk formula correctly.
Question 2
Discuss how increasing porosity in a material affects the transport of a pollutant over time.
💡 Hint: Consider the ease of moving through a denser versus a less dense medium.
Challenge and get performance evaluation