Add a few drops of dilute sulphuric acid to copper sulphate solution to make it more conducting. In this method, parts are placed on a wire rack, allowing each part to come into physical contact with the electrical power source. Question 2. Wait for 3-4 minutes. (c) If you pass current through copper sulphate solution, copper gets deposited on the plate connected to the ________ terminal of the battery. (a) conductor Question 5. (b), Question 5. The waste conducting solution pollutes the environment. This process is known as chemical effects of current. Question 20. Commercial zinc-yellow plating has a standard minimum thickness of 0.00020 inches. (d) Vinegar Electroplating is the process of covering an object with a thin layer of metal by electrochemical deposition. Answer: Materials which allow electric current to flow through them are called conductors. Solution: The bulb does not glow in the setup shown in Fig. Watch Now. Answer: Materials which do not allow electric current to flow through them are called insulators. Electroplating is the deposition of metal, from an electrolyte onto an electrode. Can we call the change taking place in the solution a chemical change? The coating finds application in screws and other light fasteners, light switch plates and other small parts. Question 6. It is an expensive process. Answer: Your IP: 103.227.176.25 Liquid B is a better conductor than liquid A. (c) Sodium chloride Yes, the solution does conduct electricity. Question 9. Let's know all about it in this session. It cannot be said for sure that liquid does not conduct electricity because : Question 2. Leave the other end free. Answer: Therefore, we can be electrocuted in case we touch appliances with wet hands. Answer: Electrolytes conduct current at a slow rate than metals. Question 15. If not, what can we do to make it conducting? Explain. Offered in aluminum, zinc, and tin plating processes. Dec 20, 2020 - What is Electroplating and How is it Done? (c) half on the anode and half on the cathode BOOK FREE CLASS; COMPETITIVE EXAMS. This part acts as the negatively charged electrode in the circuit. Though more expensive, this option is optimal for more delicate parts that cannot undergo barrel plating. Answer: 8788563422. What results do you obtain? Electroplating is a process that uses electric current to reduce dissolved metal ions by the use of … Conclusion. Electroplating, process of coating with metal by means of an electric current. What is the basic principle of electric pen ? Answer: Gradually, a layer of copper builds up on the plate. Based on the principles of Electrolysis, electroplating involves: “the transfer of metal from an ‘ Answer: what is electroplating describe an activity that Steel spoon can be electroplated with copper - Science - Chemical Effects of Electric Current NCERT Solutions Board Paper Solutions It is found that the bulb of the tester glows brightly for liquid A while it glows very dimly for liquid B. What do you find? Study Material. Chemical effects of electric current are used widely and one of the effect is electroplating. Class 10 Class 12. II. The temperature around the electroplating equipment should be optimum. How are bridges and automobiles prevented from rusting ? This makes them look more attractive and also resist corrosion. If you pass current through copper sulphate solution, copper gets deposited on the plate connected to the ……….. terminal of the battery. Add a little sugar to the distilled water in the third cap and dissolve it. (b) pole Take 250 ml. Answer: Answer: Answer: Can you explain the reason ? How can you make a tester for testing whether a given material is a conductor or an insulator ? Parts of bicycle, motorbike and sanitary fittings are chrome plated by this method. The loss of copper from solution is cqmpensated and the process goes on. The free copper gets drawn to the plate connected to the negative terminal of the battery and gets deposited on that plate. Answer: When electric current is passed in water hydrogen ions (H+) move towards cathode and get collected over it. (d) sides of the container Why is chromium used for electroplating ? Connect the negative terminal of battery to the metal sheet. [NCERT] (c) Sodium Answer: Answer. (a) anode Question 1. Electroplating: Electroplating is used for decorative purposes or to prevent a metal from corrosion. Topics covered are Good or Bad Conductors, tester and its Working, LED, complete and incomplete circuit and effects of current in effecting solutions. Why ? (d) chemical energy into magnetic energy Question 4. Join the free ends of two wires momentarily. Write its one use. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. Observe the electrodes carefully. Question 1. Electrodes are the metal rods which are dipped in liquids, to which cells are attached are called electrodes. Answer: Let's know all about it in this session. Changes of colour of solutions may occur depending on what solution and electrodes are used. Materials which allow electric current to flow through them are called conductors. The coating shall be produced from an aqueous electroplating system that may be either an alkaline or acid formulation. Answer: Question 11. Can you think of the possible reasons? (d) semi-insulator CBSE 8 Science 01 Crop Production and Management 7 Topics | 8 Quizzes 1.1 Agricultural Practices and Cropping Pattern 1.01 Agricultural Practices and Cropping Pattern . 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