Electroplating Process and Applications
21 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the process of depositing a layer of any desired metal on another material by means of electricity called?

  • Electrolysis
  • Electromagnetism
  • Electroplating (correct)
  • Electrostatics
  • Why is electroplating considered a very useful process in industry?

  • To reduce the appearance of metal objects
  • To make metal objects more brittle
  • To coat metal objects with a thin layer of a different metal (correct)
  • To increase the weight of metal objects
  • What property of chromium makes it suitable for electroplating on objects such as car parts and kitchen gas burners?

  • Shiny appearance and corrosion resistance (correct)
  • Dull appearance and susceptibility to corrosion
  • High cost and brittleness
  • Susceptibility to scratches and low melting point
  • Why is it more economical to electroplate chromium on objects rather than making the whole object out of chromium?

    <p>The whole object made of chromium would be too expensive</p> Signup and view all the answers

    Which industry commonly uses electroplating to enhance the appearance of their products?

    <p>Automobile manufacturing</p> Signup and view all the answers

    Why is it dangerous to touch an electrical appliance with wet hands?

    <p>Wet hands can conduct electricity and cause electric shock.</p> Signup and view all the answers

    What do good conductors of electricity allow to pass through them?

    <p>Electric current</p> Signup and view all the answers

    Which materials do not conduct electricity?

    <p>Rubber, plastic, and wood</p> Signup and view all the answers

    What type of electric supply should be used for experimenting with the tester?

    <p>Electric cells</p> Signup and view all the answers

    What is the purpose of using a tester with liquids?

    <p>To test whether a liquid allows electric current to pass through it or not</p> Signup and view all the answers

    What happens to the human body when it comes in contact with wet hands and electricity?

    <p>It becomes a conductor of electricity and increases the risk of electric shock.</p> Signup and view all the answers

    Why is it important to avoid experimenting with the electric supply from mains or a generator?

    <p>To prevent accidents and ensure safety</p> Signup and view all the answers

    What type of materials have been tested so far with the tester?

    <p>Only solid materials</p> Signup and view all the answers

    Why is it dangerous to touch an electrical appliance with wet hands?

    <p>Water is a good conductor of electricity</p> Signup and view all the answers

    What type of materials are good conductors of electricity?

    <p>Materials that allow electric current to pass through them easily</p> Signup and view all the answers

    What did the tester help us determine about materials?

    <p>Whether they allow electric current to pass through them</p> Signup and view all the answers

    Why should one not experiment with the electric supply from mains or a generator for testing materials' conductivity?

    <p>It can be harmful and unsafe</p> Signup and view all the answers

    What do materials like rubber, plastic, and wood have in common in terms of conducting electricity?

    <p>They do not conduct electricity</p> Signup and view all the answers

    What is the primary reason for using only electric cells for testing conductivity instead of mains or generators?

    <p>Safety and prevention of accidents</p> Signup and view all the answers

    What property makes metals like copper and aluminum good conductors of electricity?

    <p>Their free-flowing electrons</p> Signup and view all the answers

    What is the effect of touching an electrical appliance with wet hands on the resistance of the body?

    <p>The resistance increases</p> Signup and view all the answers

    Study Notes

    Electroplating

    • Electroplating is the process of depositing a layer of any desired metal on another material by means of electricity.
    • It is considered a very useful process in industry because of its ability to enhance the appearance and durability of objects.
    • Chromium is a popular metal used for electroplating on objects such as car parts and kitchen gas burners due to its corrosion-resistant property.

    Electrical Conductivity

    • Good conductors of electricity allow electric current to pass through them.
    • Materials like copper and aluminum are good conductors of electricity due to their high conductivity property.
    • Materials like rubber, plastic, and wood do not conduct electricity and are therefore referred to as insulators.
    • Liquids can be tested for conductivity using a tester, which helps determine whether they are good conductors or insulators.

    Safety Precautions

    • It is dangerous to touch an electrical appliance with wet hands because the human body's resistance decreases, making it more susceptible to electric shock.
    • Experimenting with the electric supply from mains or a generator is not recommended due to the risk of electric shock.
    • Electric cells are a safer option for testing conductivity because they provide a limited and controlled amount of electricity.

    Importance of Testing Conductivity

    • Testing conductivity helps determine whether a material is a good conductor or insulator, which is important for various industrial and practical applications.
    • The tester helps determine the conductivity of materials, which is essential for ensuring safety and preventing accidents.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Description

    Learn about the process of electroplating, which involves depositing a layer of metal on another material using electricity. Understand its common applications and its significance in industry for coating metal objects with a thin layer of a different metal.

    More Like This

    Use Quizgecko on...
    Browser
    Browser