Some Applications & Uses of Electroplating are listed below: Aesthetics; Commercial applications; To prevent corrosion; Conduction of Electricity; Reduce friction b. 2. Search for: Home; Live Online Classes. The copper sulphate solution has copper metal in the dissolved form.The copper sulphate solution consists of free positively charged copper ions and negatively charged sulphate ions. It is one of the most common applications of chemical effects of electric current. Contact. Besides, electroplating has a plethora of other applications in many industries. NCERT Textbook Solutions 2020-21 as well as Offline Apps class 8 of other subjects are also available for academic session 2020-2021. Some of the cyanide complexes find their use for electroplating a protective layer on surfaces. 8. 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. NCERT Solutions for Class 8 Science Chapter 14 – 3 Mark Questions and Answers. It gives a shining appearance to the bathroom taps due to which they look more attractive. Application of Percentages ,Comparing Quantities - Get topics notes, Online test, Video lectures, Doubts and Solutions for CBSE Class 8 on TopperLearning. Question 3 Name the metal which is electroplated on car parts such as bumpers and bicycle handle bars? Class 8 Science Chapter 14 Chemical Effects of Electric Current . POWER POINT PRESENTATION BASED ON ELECTROPLATING 2. i@% 3. Commercial applications. Electroplating is essentially a chemical reaction which helps to make various items we see and use every day. Question 8 Which property of chromium metal make it suitable for electroplating it on car bumper, bath taps and bicycle handle bars? Smoothness. 4.8 Electroplating Process Control and Chemical Analysis of Plating Solutions. NCERT Exemplar Class 8 Science Chapter 14 is a free resource which is very helpful while preparing for your upcoming … so the object is made of a cheaper metal and only a thin coating of chromium metal is deposited all over its surface by electroplating.After chromium plating it looks as if the whole iron or steel object is made of chromium metal. Parts of bicycle, motorbike and sanitary fittings are chrome plated by this method. 3)Electroplating is used to give objects made of a cheap metal coating of a more expensive metals to make them look more attractive. b. Since the copper ions are taken out from the solution at the negative electrode but put into solution at the positive electrode therefore the concentration of copper sulphate solution remains constant. Electroplating is used for coating metals on pure metals. Write an applications of electroplating . On artificial jewellery actual metal is coated with … Question 2 What properties of chromium make it suitable for electroplating it on car bumpers, bath taps and bicycle handlebar? clear. Commercial applications. A conductor. Chromium is also used in rims of wheels and zinc is also plated on various machinery parts. The resulting effect is … Let’s take an example of brass key which is to be copper-platted by using copper electroplating. Finds applications in electrosynthesis, mercury cell process, and electrorefining. For example: All metals including metal wires, copper wires, aluminium foil, etc. Become our. The electrolyte is a copper ion solution, like copper sulphate. 2)Purification of metals. These ornaments have the appearance of silver or gold but they are much less expensive. God bless you as you effect the correction. In this article we will talk in detail about electroplating with some demonstrations and uses of electroplating. 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. MCQ HOTS Questions Notes NCERT Solutions Sample Questions Test . NCERT Solutions for Class 8 Science Chapter 14. Allows the current to pass for about 15 minutes. Top Mass plating is one of the most common types of electroplating and is one of the processes with the maximum applications. Best example of electroplating can be seen on artificial jewellery. Copper plating is done to provide extra smoothness to the metal … c. In liquid the moving charges are called _____ . The part to be plated is the … May 13,2020 - Explain electroplating | EduRev Class 8 Question is disucussed on EduRev Study Group by 150 Class 8 Students. We will use what we have studied in the last chapter, Chapter 7 Integration to solve questions. Learn Chapter 8 Application of Integrals (AOI) of Class 12 free with solutions of all NCERT Questions for CBSE Maths. Question 3 What properties of tin make it suitable for storing food? Electroplating is the process of depositing desired metal on another metal by using electricity. Application of plating current for the required time to attain the desired thickness; There are many variations to this process, depending on the type of substrate being plated. Parts of bicycle, motorbike and sanitary fittings are chrome plated by this method. 9. Applications of Electroplating Class 8 Physics Chemical Effects of Electric Current Artificial jewelry , usually made of less expensive metals is often plated with a thin layer of a precious metal like gold and silver to make it more lustrous, appealing but cheaper. A cyanide-copper solution is still used for this purpose and also for the initial plating on zinc die castings. 4.8.3 Cathode Efficiency and Anode Efficiency. 2. So, another electroplating process can be used for components that require a high degree of aesthetic appeal. c. Both of these. Sample preparation Be careful! An insulator. Usable thread length for Class 8.8 Partial Thread Hex Head Cap Screws can be approximated by the equation THREAD LENGTH = (2 X DIAMETER) + 6mm. when electric current is passed through copper sulphate solution ,then the following changes takes place : 1)The dissolved copper metal present in the copper sulphate solution as positively charged copper ions gets attracted to the negatively charged electrode iron key. to lower the manufacturing cost. Chemical Effects of Electric Current - Chapter Wise CBSE Solved Question and Answer Based On NCERT . Tin cans used for storing food are made by electroplating tin metal on to iron. For example, chromium which is a lustrous, corrosion free, scratch resistant, etc. UAE. Very helpful I must say but umm…the iron key ie the cathode should be connected to the positive terminal of the battery while the anode (copper) should be connected to the negative terminal of the battery. 3)Electroplating is used to give objects made of a cheap metal coating of a more expensive metals to make them look more attractive. but being costly is deposited on materials like car parts, taps, burners, etc. 3)Production of certain metals from the ore. 4)Production of chemical compounds. Nickle is used in decorative items, cars, and machinery parts. NCERT Exemplar Class 8 Science Chapter 14 Chemical Effects of Electric Current. Nickel electroplating is a process of depositing nickel onto a metal part. 4.8.5 Covering Power and Throwing Power. Uses of Electroplating. MCQ HOTS Questions Notes NCERT Solutions Sample Questions Test . It is widely used in industry for coating metal objects with a thin layer of a different metal. The metal which is deposited in the form of a thin layer has some desired properties which the metal of the object does not possess. Here, some of the latest resources of NCERT Exemplar is provided on this page for free-of-cost. 4.8.4 The Hull Cell Test . Zinc coatings prevent the corrosion of steel articles. Answer: Applying a layer of gold on any material by electroplating is called gold plating. The chemical effects of electric current is used in industries or factories for the following purposes: 1) Electroplating metals. Chemical Effects of Electric Current CBSE Class 8 Important Questions Class–VIII Science (Chemical Effects of Electric Current Q.1Fill in the blanks a. Electrolysis is used for _____ one metal over another metal. For example, relatively unreactive cadmium metal is often placed on steel components to inhibit rusting. - 31631792 salmataj646 salmataj646 4 hours ago Science Primary School Write an applications of electroplating . For high aspect ratio electroplating the standard procedure has been to use PMMA as a photoresist and synchrotron X-ray exposure for patterning. Applying a layer of chromium on an article by this method is called chrome plating. 1 See answer salmataj646 is waiting for your help. Very informative article I would love to suggest this to my little brother to make a note on this topic, Keep sharing such things with us. a. Less expensive metal are electroplated with more expensive metals like silver and gold to make Jewellery or ornaments. Ferric chloride is also popular for the etching of Nimonic alloys. Electroplating! This means that a copper plate is connected to the positive terminal of the battery. During copper plating of an iron key, copper metal is transferred from the copper plate to the iron key through the copper sulphate solution.During electroplating with copper, copper metal gets transferred from positive electrode to the negative electrode. 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