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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is surface tension?
💡 Hint: Think about why raindrops form shapes.
Question 2
Easy
How does temperature affect surface tension?
💡 Hint: Recall that heat changes molecular motion.
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 causes surface tension in a liquid?
- Only cohesive forces
- Only adhesive forces
- Cohesive forces exceeding adhesive forces
💡 Hint: Think about the structure of liquid surfaces.
Question 2
True or False: Surface tension increases with rising temperature.
- True
- False
💡 Hint: Recall how heating affects molecule interactions.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Calculate the surface tension exerted by water if a droplet has a radius of 0.5 cm and creates a pressure difference of 0.1 atmospheres on the surface.
💡 Hint: Remember the pressure relationship for spherical droplets.
Question 2
Discuss the implications of changing surface tension in detergents and its effect on cleaning efficacy.
💡 Hint: Consider how dish soap behaves compared to plain water.
Challenge and get performance evaluation