State how this essential step is carried out in the extraction of; (a) iron, (b) aluminium. Cryolite 2. (ii) (a) Aluminium metal is more electropositive than iron. APlusTopper.com provides step by step solutions for Selina Concise ICSE Solutions for Class 10 Chemistry Chapter 7 Metallurgy. Contact :8897306498 (iv) Type metal. Question 4: (i) Name the process and the element extracted by the above process as shown in the figure. (ii) What is the zinc compound obtained by roasting zinc blende ? (ii) Ferrous alloys: It is an alloy having iron as one of the constituent, e.g., nickel, steel. (d) To protect iron from rusting it is coated with a thin layer of zinc. CaSO4.2H2O 9. Na3AlF6 2. Slag is calcium silicate with the formula CaSiO3. (iv) Immiscible. Class 10 Class 12 (ii) How is the metal sodium extracted ? Calcinated ore is then treated with NaOH when Al2O3 is converted into soluble NaAlO2.Fe2O3 can thus be filtered off. (2) Cryolite. Reaction of zinc with hot concentrated sodium hydroxide. (b) Sulphur is non metal because, it gives negative sulphur ions by gaining of two electrons. (iii) Iron and aluminium ores both, contain impurities. 8. (b) Copper [Cu]. (b) The following questions relate to the extraction of aluminium by electrolysis : (1) Give the equation for the reaction that takes place at the cathode. METALLURGY - 10 ICSE CHAPTER WISE QUESTIONS METALLURGY . Zinc placed in ferrous sulphate solution. Answer: (i) Carbon (Graphite) (ii) A (iii) Aluminium oxide / Alumina / cryolite (sodium aluminium fluoride). Suggest a reason for this. Answer: They tend to lose electrons and act as reducing agents. Question 11: Aluminium transmission wires are preferred to copper transmission wires. ICSECHEMISTRY16 gives you a complete support to you to give your best in ICSE exam. (2) Insoluble, as copper carbonate is insoluble in water. Metals generally contain 1 to 3 valence electrons in their outermost shell whereas non-metals contain 4 to 7 valence electrons in their outermost shell. Thus, lime stone is used to remove the impurities of silicon dioxide present in ore. (b) (1) It is used in the manufacture of cement. Reduction of iron (III) oxide by carbon monoxide. Fill in your details below or click an icon to log in: You are commenting using your WordPress.com account. The mixture melts at 950°C instead of 2050°C thereby saving electrical energy. Question 6: (i) The ore zinc blende, is an important source of the metal zinc. Question 20: (i) Most of pig iron obtained from blast furnace is converted into steel. (ii) Mixture of fluorides. (iv) Write the equation for the reaction that occurs at the cathode during the extraction of aluminium by electrolysis. So, a large amount of energy is needed to maintain this high temperature. (b) Aluminium metal is extracted by electrolytic reduction process, in which electric current is passed through fused aluminium oxide, the purified Bauxite. Bauxite is chemically known as hydrated aluminium oxide. PbS 3. Answer: (i) The gas Y, carbon dioxide and the gas Z, is carbon monoxide. It cannot be reduced by hydrogen, while the last three members are reduced by hydrogen to their metals according to reactivity series. Plus more on ISC Commerce, CA, BCom, and "Failure.". The carbon content varies from 0-5 to 1-5%. (b) Give two uses of slag. (ii) Al2O3. Metallurgy is the process of extraction of purest form of metals which include both physical and chemical process.
2. (ii) Arrange the metals in decreasing order of reactivity. A. Bauxite: B. Coke C. Cryolite D. Froth floatation E. Sodium hydroxide solution. Currently only available for. Question 26: (i) How are the alloys classified ? (b) How zinc is extracted from calamine ore ? Metallurgy – 2
Metals are extracted from their ores. ZnO 6. (iii) What are the differences between a mineral and an ore ? (iii) What would you expect to happen, if aluminium metal is heated with iron (III) oxide ? (iv) (a) Type metal is hard and expands on cooling and is therefore used for making types. 16. (ii) What are the main constituents of steel ? Dolomite 5. (iii) Non-metals form negative ions [Anions]. Answer: (i) Haematite—Fe2O3. Question 2: The given figure illustrates the refining of aluminium by Hoope’s process. HgS 8. Zinc reacts with lead nitrate solution to precipitate lead and zinc nitrate is formed. (iii) Galvanized iron is used in making different varieties of tools for industries, scientific apparatus, and household fittings. Name the substance and give one reason for the addition. (iv) Carbon is major impurity present in iron. (ii) The metafiles below hydrogen and above silver in the activity series of metals. Sorry, your blog cannot share posts by email. 15. Bauxite containing FeO is calcinated at high temperature when FeO is oxidised to Fe2O3. Answer: In moist air, a thin layer of aluminium oxide is formed on it quickly which protects aluminium to oxidise. Give one example. 7. (c) Sodium [Na] and calcium [Ca]. Answer: (i) Bauxite is hydrated aluminium oxide [Al2O3.2H20] and aluminium metal is extracted from bauxite. (ii) Alumina (Al2O3) is the main aluminium yielding compound. Question 12: (i) (a) What is the function of adding the lime stone in the “Blast Furnace”? (c) Name another metal, which is extracted by this process. (iv) Write the electrolytic reaction taking place at cathode? It is more reactive than lead while gold, a noble metal, lies far below lead in the activity series and it is less reactive or highly unreactive. A burning Mg riboon is inserted into the ignition mixture, which catches the fire and ignite the thermite. Pig-iron is brittle in nature and cannot be welded. Answer: (i) Thermite is a mixture of 3 parts of ferric oxide and one part of aluminium powder. Answer: (i) (a) (1) The metal X is sodium. Answer: (i) (a) The increasing order of oxides is : Magnesium oxide > iron (II) oxide > lead (II) oxide > copper oxide. C + O2  ⟶  CO2 Or  2O2- – 4e–  ⟶  O2 Thus, electrodes are made of graphite. Unauthorized use and/or duplication of this material without express and written permission from this site’s author and/or owner is strictly prohibited. Extramarks offers online tutorials for ICSE Class 10 Metallurgy chapter. (v) Magnalium (vi) Duralumin. (ii) Sodium metal is Extracted by the electrolysis of fused sodium chloride. (iv) Aluminium formed sinks to the bottom of the tank and is periodically tapped off. C + O2  ⟶   CO2 CO2 + C  ⟶  2CO (b) Carbon monoxide so produced, reduces haematite ore [Ferric oxide] to metallic iron. (iii) (a) The minerals contain a low percentage of metal, while the ores contain a large percentage of the metal. Do check them out below, and leave your feedback. Reduction of zinc oxide. Hence it is called froath floatation process. Pb + 4HNO3  ⟶  Pb(NO3)2 + 2H2O + 2NO2 Lead present in solder is confirmed as below : Question 14: The basic materials needed for production of iron in the blast furnace are lime stone, coke and air in addition to the iron ore. (i) (a) Name one iron ore and write its formula. (b) Brass. Selina solutions for Concise Chemistry Class 10 ICSE chapter 7 (Metallurgy) include all questions with solution and detail explanation. Selina Concise Chemistry Class 10 ICSE Solutions Metallurgy. (ii) Calcium, Copper, Lead, Aluminium, Zinc, Chromium, Magnesium, Iron,. When an electric current is passed through electrolyte, the heat is also produced which keeps the mass in molten state and alumina gets reduced to free aluminium metal according to the following reactions: Question 9: The following questions are relevant to the extraction of Aluminium : (i) State the reason for addition of caustic alkali to bauxite ore during purification of bauxite. Question 6: The table below compare some properties of metals and non-metals. Answer: (i) Alloys are classified on the basis of their constituents. (b) Hot air is blown in, at the base of the furnace; where’ it reacts with coke. Question 24: (i) The ore zinc blende, is an important source of the metal zinc. (c) Aluminium is more active than iron and yet there is less corrosion of the aluminium, when both are exposed to air. Change ), You are commenting using your Twitter account. ... Metallurgy. (iii) It is clear from the properties of X, that the metal X is supposed to be highly positive in nature, hence it is extracted by electrolytic reduction method. (iii) How many valence electrons are present in (a) Metals, (b) Non-metals, Answer: (i) (1) B, D, F (2) A, C, E (ii) (1) Mercury metal exists in liquid state at room temperature. An answer may be used only once. Answer: (i) In this process, the heavy material containing metal, is floated upward with froath to separate it from,waste material present in ore or mineral. (c) (1) Cast iron contains about 4% of carbon. Study Of Compounds (Hydrogen Chloride, Ammonia, Nitric Acid And Sulphuric Acid) 9. It dissolves in many liquid solvents, but it is non-conductor of electricity and heat. Also write the equation. (iii) Calcium, and magnesium are other two metals, which can be extracted by electrolytic reduction method. (iii) Name the element which serves both as the anode and the cathode in the extraction of aluminium. Lime is the compound which takes part in the formation of slag. (ii) To make alumina a good conductor of electricity. Metal Z, reacts vigorously with dilute hydrochloric acid but hardly at all with cold water. (b) (1) Magnesium reacts with boiling water to liberate hydrogen gas, while iron can do so with steam in red hot condition only. Give the names of the following metals : (i) A metal commonly used for preventing rusting of iron. Answer: (i) Caustic alkali dissolves aluminium oxide forming soluble sodium aluminate while impurities remains insoluble and ppt. (iii) Aluminium is cheaper than copper. Or In the process of extracting zinc, the above named ore is roasted. (iii) (a) Iron forms two series of slags ferrous and ferric. Toll Free No. (ii) Aluminium and magnesium. (c) Calcium metal is also extracted by electrolytic reduction process. (b) (1) What is the type of bonding expected in metallic chloride ? It has the characteristic property of all the oxides of metals that highly electropositive oxides of metals cannot be reduced by heating with carbon to form free metal. Physical Properties of Metals and Non-Metals Metals are electropositive in nature. (v) Brass [7% of Cu, 30% of Zn]. 11. We believe you will find Prateek’s notes quite helpful for last minute preparation/revision for your upcoming ICSE 2019 board exams. The extraction of metals from their ores and then refining them for use is known as metallurgy; Steps involved in Extraction of metals from ore include ... ICSE Grade 10; Chemistry; India CBSE. (d) Metals He generally good conductors of heat and electricity whereas non-metals are bad conductors of heat and electricity. Answer: (i) Aluminium is lighter than copper. (b) (1) Electrovalent or ionic bond. To avoid this sodium is always kept under kerosene oil. Change ). It is a resource you can turn to for a quick chapter glance and last minute revision for your tests and exams. (iii) Fe2O3 + 3CO  ⟶  2Fe(Spongy iron) + 3CO2 (iv) Fusible slag (calcium silicate) (v) CaO + SiO2  ⟶  CaSiO3. It is a cheaper metal than copper. Answer: (i) A is cathode made up of iron and B is anode made up of zinc or magnesium. (iii) The hardened steel is brittle in nature and when it is heated upto a definite temperature and for certain time and then allowed to be cooled down slowly, then it loses its brittleness. I’m ICSE Helper. Horn silver 10. (b) By painting and by coating with nickel. (ii) (a) The limestone decomposes at 1000°C, to form lime and carbon dioxide. Write the equation for the reaction which takes place when the sulphide ore is roasted. (1) A car bumper and (2) A food can. (iii) (a) (1) Nickel Plating and (2) Galvanizing. (ii) (a) Among the above metals, write the names of metals which will displace hydrogen from water or steam. Question 1: (i) Arrange Cu, Ca, Al, Fe, Mg, Pb, Na and Zn in the decreasing order, in which they appear in the activity series; putting down the most reactive metal first and least reactive in the last. (iv) Iron. (b) Has a hydroxide that reacts with both acids and alkalies. These ICSE Class 10 Chemistry Chapter 7 Metallurgy Revision Notes will surely increase your confidence and reduce the anxiety of examination. Using caustic soda solution, how would you distinguish between these two salts ? The magnesium oxide is highly stable. Question 28: Give the composition and uses of the following alloys : (i) Brass. (iii) A layer of powdered cpke is sprinkled over the surface of the electrolyte mixture because it reduces the heat loss by radiation and prevents carbon anode from brning in air. (b) Which of these is most likely to be found in free state in nature ? (4) Write the name of the solid A and gas B. MgSO4. More one-page Chemistry notes by Prateek coming up. Sodium is collected at cathode, while chlorine gas is liberated at anode; as an important by product. (2) Magnesium can displace hydrogen from acids vigorously in cold but iron displaces hydrogen slowly. 11. (ii) The process shown is cathode protection. Question 10: ‘Alumina (aluminium oxide) has a very high melting point of over 2,000°C so that it cannot readily be liquefied. (iii) Graphite. Question 5: (i) Differentiate between: (a) Slag and Flux. Download eBook Reader. You are forbidden to reproduce any part of these notes without our prior permission. (b) Name three raw materials used in the extraction of iron. (b) Name the process of its extraction and describe it. (2) Graphite, an allotrope of carbon is a good conductor of electric current. Give a reason fdr your answer and deduce whether the element X would be expected to have oxidizing or reducing properties. (3) Soluble, as magnesium hydroxide is soluble in water. (b) Which gas is generally liberated when metals react with dilute acid? (v) Brass. (iv) Are liquid zinc and liquid lead miscible or immiscible ? Write the equation for this reaction. (3) The metal Z is magnesium. Currently, she is practicing physical distancing while pursuing an MBA course and praying for everyone’s health and wellbeing. ALLEN KOTA FULL Study Material(JEE)-Free Download PDF Download Allen Handbook for Physics,chemistry and Maths CLICK HERE TO D… [PDF] Downoad 40 Years of IIT JEE by Disha pdf You can clear all your concepts to score good marks in all topics like metallurgy, ionic compounds, etc. Write the equations for the reactions involved. (2) Which metal is added to steel to make stainless steel ? If you face any problem, feel free to Contact Us or leave a comment anywhere. Fluorspar (CaF2) acts as a solvent and increases the conductivity of electrolytic mixture. (iii) (a) When caustic soda solution is added to a ferrous salt, a dirty green precipitate of ferrous hydroxide is obtained. Answer: They tend to gain electrons and act as oxidising agents. Copyright © ICSE Helper and Helpline for ICSE Students (Class 10), 2020. (ii) What is the most important chemical process in the extraction of any metal ? (c) Does not react with cold water but reacts with steam when heated. In case of iron, Fe2O3 + 3CO  ⟶  2Fe + 3CO2 Al2O3 cannot be easily reduced, hence it is subjected to electrolysis. (b) Iron—Hematite. ICSE Class 10 Chemistry Chapter 7 Metallurgy Revision Notes by Swiflearn are so far the best and most reliable Revision Notes for ICSE Class 10 Chemistry. (2) Cryolite : It is added to lower the fusion temperature of the electrolytic bath. They are lustrous, malleable, ductile and good conductors of heat and electricity. Epsom salt 11. (3) Graphite acts as an anode. 4. (4) The name of the solid A is magnesium hydroxide, while the gas B is hydrogen. Answer: Sodium is a very reactive metal and on exposure to moist air, the surface of sodium metal is tarnished due to formation of sodium carbonate. Question 16: (i) What is froath floatation process and for, what purpose it is used ? Answer: (i) Copper and zinc. During roasting, chemical changes like oxidation or reduction take place. 9. Answer: (i) Aluminium, Hall and Herault’s process. (ii) The element X, contains one electron in the outermost orbit of its atom, which can be easily donated and one unit of positive charge is gained on its ion. The platform is run by ICSE Helper, a CISCE alumna. Question 2: (i) Na, Ca, Mg, Al, Zn, Fe, Pb and Cu, are well known metals. For subject-wise notes and tips, check out our Quick Links page. underground sewer pipes and storage tanks. (iv) Why is it necessary for electrode B to be continuously replaced ? X – e–  ⟶ X+ The symbol of X ion is X+. (iii) Fused alumina does not conduct electricity well. Question 8: Aluminium is highly electropositive metal, in spite of it aluminium does not oxidise rapidly in air. What is the special property of: (a) Type metal, (b) Duralumin ? Which metal is extracted from it ? Cinnabar 8. (ii) What is meant by electrochemical series of metal ? Formation of Hag inside the blast furnace. (iii) (a) What is pig-iron ? (b) How can iron or steel be prevented from rusting, when used for ? (ii) Bronze. (b) (I) Aluminium is a good conductor of heat, light in weight, strong and can be made passive by nitric acid. Besides iron, it contains about 4% of carbon and small quantities of silicon, phosphorus, manganese and sulphur. Chemistry: Metallurgy (NOTES) by Prateek Srivastava| Helpline for ICSE Students (Class 10) Visit us at https://icsehelpline101.com| Connect with us on Twitter and Instagram @icsehelpline101 (2) Oxygen gas is produced at the graphite anode, which combines with carbon to form carbon dioxide gas at high temperature and thus anode destroys away. (v) What is the name of the alloy formed between zinc and copper ? Fe2O3 12. C + O2  ⟶  CO2 (iii) In the modern method, pure alumina is dissolved in cryolite [Na3.AlF6], which makes it good conductor of electricity. Zinc is treated with dilute sulphuric acid. In Bayer’s method, the difference in chemical affinity between the bauxite and gangue is utilized for concentrating the ore. (2) If fused metallic chloride is electrolysed, at which electrode the metal will be obtained. Action of Copper sulphate solution on zinc. Give the equation for the reaction that takes place. Molten iron is thus produced, which can be used in welding. (b) (1) The following reaction (reduction) takes place at the cathode during the extraction of aluminium. Download the PDF Question Papers Free for off line practice and view the Solutions online. This site provides well labelled diagrams also. (v) “Iron is removed from a blast furnace as a liquid”. Zincite 6. Bauxite Answer: 1. Question 3: (i) Arrange Ca, Pb, Fe, Na, Zn, Cu, and Al in the decreasing order of their reactivity. Ores contain all unwanted impurities and a part of required metal too. Important Questions for ICSE Class 10 CISCE Chemistry. It also increases conductivity alongwith fluorspar. (4) Sodium hydroxide. However, conversion of alumina to aluminium and oxygen, by electrolysis, can occur when it is dissolved in some other substance.’ (i) Which solution is used to react with bauxite as a first step in obtaining pure aluminium oxide ? (c) All minerals are not ores, but all ores are minerals. 2H20 + NaOH  ⟶  2NaAlO2 + 3H2O (iii) The name of substance is Fluorspar (CaF2) and it increases conductivity of the electrolyte. (ii) (a) Metals complete their octet by the loss of electrons whereas non-metals complete their octet by the gain of electrons. (iv) Which two products are taken out from the blast furnace during the extraction of iron ? (iii) Reduction of zinc oxide. (iv) What is the major impurity present in iron when it is removed from the blast furnace ? This is the reason why aluminium does not oxidise rapidly in air. Replies. Change ), You are commenting using your Facebook account. (iv) An alloy usually has some property which makes it particularly useful. Question 2: Why are non-metals called oxidizing agents ? (2) The carbonate of Y. Question 7: Why carbon can reduce copper (II) oxide to copper but not calcium oxide to calcium ? 7H2O 11. (iii) How is the metal X, extracted from its given salt ? (ii) Take the given sample of solder and dissolve it in concentrated nitric acid. Answer: (i) Duralumin, an alloy of aluminium, is used in the construction of aircraft; because it is light, resistant to corrosion and has great tensile strength. (iv) Stainless steel. Selina Concise Chemistry Class 10 ICSE Solutions has been put together by vastly experienced teachers keeping in mind the latest ICSE syllabus and requirement of the examinations. (c) Aluminium metal is protected by a thin film of aluminium oxide, which sticks firmly with the metal and prevents further corrosion. Answer: (i) Zinc sulphide (ZnS). It is a substance which is added along with charge to separate the gangue in metallurgy. It is the product obtained by the combination of the flux with gangue in metallurgy. (iii) What is tempering of steel ? On the top of the thermite mixture, an irgnition mixture of potassium chlorate and magnesium powder is placed. Answer: (i) (a) Carbon burns in the presence of oxygen of air to form carbon dioxide which is reduced to carbon monoxide in the presence of coke. Haematite 12. By which chemical process is the amount of carbon decreased to make steel ? This process is known as tempering of steel and is employed for bringing the steel into a suitable state of hardness and elasticity. (iv) State one large scale use of zinc. (ii) What is the purpose of adding lime stone in the extraction of iron from haematite ? Answer: (i) A—Cathode, B—Anode. (1) Roasting of the ore. (2) Reduction of the zinc compound which is the product of the above reaction. Here’s a link to the PDF file for notes on the aforementioned chapter: You may print these notes through the PDF file and refer to them for your personal use as required. (b) Give two evidences to show that magnesium is more reactive than iron. (3) ‘What metallic property is shown by the non-metal graphite ? (iii) The iron cathode is to saved by connecting it, to a piece fo more electro-positive metal (anode). (iv) Burns away in the presence of oxygen produced or consumed. If you can’t find what you are looking for, then use the categories/subjects drop down menu or search for your desired topic/subject. State how zinc leaves a furnace. (b) The slag is used in the manufacture of cement. All exercise questions are solved & explained by expert teacher and as per ICSE board guidelines. Answer: (i) The decreasing order of the given metals is as follows : [Most reactive] Na, Ca, Al, Zn, Fe, Pb, and Cu [Least reactive] (ii) (a) Sodium [Na]. (iii) It is an alloy of copper, zinc and nickel and is used for making ornaments and utensils and also used for decoration. Al+3 + 3e–  ⟶  Al. For more information, please contact us or go through our copyright policy. (ii) (a) Among the above metals, write the names of metals which will displace hydrogen from water or steam. Answer: Zinc is above lead in the metal activity series. Keep yourself updated! ( Log Out /  CaO + Si02  ⟶  CaSiO3 (Calcium Silicate) [Slag] The slag, is formed at the surface of blast furnace from where, it is removed from time to time. Answer: (i) The given metals are arranged in the activity series of metals as follows: Na, Ca, Mg, Al, Zn, Fe, Pb (most reactive) and Cu (lea… (ii) A certain metal does not liberate hydrogen from dilute sulphuric acid but it displaces silver from aqueous silver nitrate solution. S + 2e– ⟶ S2 (ii) (a) When aluminium metal reacts with sodium hydroxide solution, hydrogen gas is liberated. Keep yourself updated with the latest notes and tips! 10. Isolation of metal from the concentrated Ore iii. 2H 2 0 • Bauxite is the principal ore of aluminium. (b) Bauxite (Al2O3). (c) Iron coated with zinc is called galvanized iron. (b) Amalgams. Why ? There’s one book called concise chemistry , published by Selina , don’t know if they still use it , But if you can get it or already have it , just go for it . Give the chemical equation for the reaction, by which this gas is produced and give a balanced equation to show, how the ore is reduced to iron. Answer: (i) (a) Lime stone decomposes at a higher temperature of blast furnace, to form calcium oxide and carbon dioxide. They lie just above and below hydrogen in activity series of metals. Action of Steam on Zinc. Answer: (i) (a) Haematite (Ferric oxide) Fe2O3. They are classified as follows: (a) Ferrous alloys. (4) Sodium hydroxide when added to powdered bauxite and the mixture when heated under pressure for 2-3 hours, bauxite is converted to soluble sodium aluminate (NaAlO2). 3. State the most likely place for the metal in the activity series. In this post, we are excited to publish the fourth in this series of single-page notes by our reader, Mr. Prateek Srivastava. (c) Higher up in the furnace, the iron ore is reduced to iron by one of the gases produced in the furnace. (iii) (a) The iron, which is obtained directly from the blast furnace is known as pig iron. it gets easy to find all Class 10 important questions with answers in a single place for students. Reply. Get ICSE Class 10 Chemistry Book PDF Free sample by Dr. P. Bahadur from Nageen Prakashan With Instant Activation. (b) What is |he principal use of slag ? Selina Concise Chemistry Solution for ICSE Class 10 Chapter 7 Metallurgy If we look at the general definition of metallurgy, it is defined as a process of extraction of metals in their pure form. (ii) A good amount «f the aluminium vaporises at this temperature. (iv) Where this method is used ? Aluminium metal is collected at cathode, while oxygen gas is liberated at anode according to the following reactions. (ii) It is an alloy of copper, zinc and tin and is used for making statues, utensils and coins. Get connected with us on Instagram -:https://www.instagram.com/conceptclarity/ Question 18: (i) The following represents a summary of the reaction which occur in the “Blast furnace”, leading to the production of molten iron. Free PDF download of Class 10 Chemistry Chapter 7 - Metallurgy Revision Notes & Short Key-notes prepared by our expert Chemistry teachers as per CISCE guidelines. (ii) How is zinc extracted from zinc blende [ZnS] ? (ii) Reduction of the oxide is an important step in extraction of metal. Question 27: State the main components of the following alloys : (i) Brass. Rust is a reddish-brown powdery deposit and consists of a mixture of ferric hydroxide and hydrated ferric oxide. Action of heat on aliuninium hydroxide. Burning of aluminium in air. Corundum 4. BuyICSE Class 10 Chemistry Book PDF Online 2020. (ii) At which electrode (A ro B) is the aluminium formed ? (iii) Why is electrolyte covered with coke? This process is termed as boldschmidts aluminothermic process. (3) which of the metals in the list is Z ? (c) Write equations that occur in the “Blast Furnace”. Excerpts and links may be used, provided that full and clear credit is given to ICSE Helper and Helpline for ICSE Students (Class 10) aka icsehelpline101 with appropriate and specific direction to the original content. Free download of step by step solutions for class 10 Science chapter 7 - Metallurgy of ICSE Board (Concise - Selina Publishers). CuCO3.Cu(OH)2 7. (iii) What are non-ferrous alloys ? (v) What is the name of the alloy formed between zinc and copper ? Question 9: Why extraction of aluminium is difficult ?

metallurgy class 10 icse pdf

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