Practice Did You Know? - 11.9 | 11. Chemical Effects of Electric Current | CBSE 8 Science
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Practice Questions

Test your understanding with targeted questions related to the topic.

Question 1

Easy

What is a conductor?

💡 Hint: Think about metals.

Question 2

Easy

Give an example of a poor conductor.

💡 Hint: These materials don't conduct electricity well.

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 main reason it's dangerous to touch electrical devices with wet hands?

  • Water is an insulator
  • Water conducts electricity
  • Water has no effect

💡 Hint: Think about how liquids interact with electricity.

Question 2

True or False: Electroplating involves the deposition of one metal onto another.

  • True
  • False

💡 Hint: Remember the use of electricity in this process.

Solve 2 more questions and get performance evaluation

Challenge Problems

Push your limits with challenges.

Question 1

You have distilled water and salt. How would you demonstrate that dissolving salt increases the electrical conductivity of water?

💡 Hint: Consider how ions affect electrical flow.

Question 2

If you were to design an experiment to compare the conductivity of various fruit juices, what steps would you take?

💡 Hint: Think about what properties in juices might help conduct electricity.

Challenge and get performance evaluation