The metal that needs to be deposited is used as the cathode while the metal on which it is deposited is used as anode. ... Also, taps and door knobs are electroplated. These MCQ Questions on Chemical Effects of Electric Current Class 8 with answers pave for a quick revision of the Chapter thereby helping you to enhance … Question 1. Applying a layer of chromium on an article by this method is called chrome plating. Q2: Describe an electrical tester. Free PDF Download - Best collection of CBSE topper Notes, Important Questions, Sample papers and NCERT Solutions for CBSE Class 8 Science Chemical Effects of Electrical Current. thumb_up Like (1) visibility Views (13K) edit Answer . Identify the electroplating process format to use based on component shape and size. Class 8 Physics Chemical Effects of Electric Current: Applications of Electroplating: Applications of Electroplating. There are several uses for electrodeposited coatings including cosmetic, corrosion resistance, and wear resistance. CBSE Science Class 8. The Microsmooth™ process uses about 30 percent less electricity, nearly 60 percent less natural gas, and half the water that conventional plating processes need. Nickel and chromium-coated articles are used in automobiles and household appliances. Uses of electroplating - definition Uses of electroplating: The most extensive use of gold plating is on jewellery and watch cases. Power point presentation based on electroplating 1. CBSE Science Class 8. This makes them look more attractive and also resist corrosion. NCERT Solutions for Class 8 Science Chapter 14 – 3 Mark Questions and Answers. Cathode: The Metal to be plated by another metal Anode: The metal to be plated on Cathode Electrolyte: Conducting solution containing metal ions in which Anode and Cathode are placed. This document is highly rated by Class 12 students and has been viewed 143 times. What is electroplating? Gold: Jewellery and Decorations, Coins: Lead: <5M> 61. Write its one use. USES OF SOME COMMON NON METALS Non Metal Main Uses… Hello Friends! It is also used to protect metals susceptible to corrosion. Chemical Effects of Electric Current . Vedantu In general, all electroplating systems are made from three elements, the anode and cathode and the electrolyte solution. Q3: … Electroplating is widely used in industries such as automobile, airplanes, electronics, jewelry, and toys. Electroplating is a very useful process. Zinc coated iron … What is electroplating? 3. In this particular scenario, we will enhance the appearance of metallic jewellery by electrodepositing a layer of gold on it. Parts of bicycle, motorbike and sanitary fittings are chrome plated by this method. List four uses of electroplating, giving the reason for electroplating in each case. A few practical applications and uses of this process are as follows: 1. Zinc coatings prevent the corrosion of steel articles. Clear, blue - bright, designation A or B trivalent chromates are normally used for Grade 5 or Class 8.8 fasteners. The passage of an electric current through a conducting liquid causes chemical reactions. Class 6/7/8. Chemical Effects of Electric Current. The lesson covers the complete explanation of class 8 Chapter 14 Chemical Effects of Electric Currents . It is deposited on other cheaper metals such as iron to make car parts, taps, bicycle handle bars, wheel rims, etc. Then take mock tests on Embibe. The dissolved ions are then reduced at the cathode and consequently plated on the jewellery. Several factors influence the process of electroplating, namely, the voltage level of the DC, the chemical composition and temperature of the solution, the distance between the anode and the cathode, and the current length of time. Applying a layer of chromium on an article by this method is called chrome plating. Gradually, a layer of copper builds up on the plate. There are several uses for electrodeposited coatings including cosmetic, corrosion resistance, and wear resistance. In this article we will talk in detail about electroplating with some demonstrations and uses of electroplating. Aesthetics Class 8 Science Chapter 14 Chemical Effects of Electric Current . Study Materials. These solutions for Chemical Effects Of Electric Current are extremely popular among Class 8 students for Science Chemical Effects Of Electric Current Solutions … Now you are provided with all the Solutions for Class 8 Science Chapter 14. Hydrolysis is a chemical reaction in which a molecule of water breaks one or more chemical bonds. Electroplating involves the deposition of thin layers of metal on metal components and metal stock. Science & Maths; Class 9. Power source: Supplies a direct current to the anode and oxidizes the metal atoms which dissolve in the solution. Electroplating is also used on car parts to give a smooth appearance and texture with the help of a thin layer of chromium. Ans: Uses of electroplating: (i) Chromium is a shiny metal that does not corrode and resists scratches. Scroll down for Chemical Effects of Electric Current from NCERT Book Class 8 … 59.Write some uses of electroplating. The entire NCERT textbook questions have been solved by best teachers for you. Electroplating is a process that uses electrical current to reduce dissolved metal cations so that they form a coherent metal coating on an electrode 4. The term is also used for electrical oxidation of anions on to a solid substrate, as in the formation of silver chloride on silver wire to make silver/silver-chloride electrodes. 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