metallurgy of iron class 10

Answer: (i) (a) Haematite (Ferric oxide) Fe2O3. Which metal is extracted from it ? Carbon monooxide is regenerated. Question 25: (i) (a) With reference to the reduction of copper oxide, iron (II) oxide, lead (II) oxide and magnesium oxide by hydrogen; place the oxides in increasing order of reduction, i.e., first the oxide that is most difficult to reduce; and at last, the oxide that is most easy to reduced. (iii) Name two other metals, which can be extracted by electrolytic reduction method. Question 5: List 1 contains the metals/alloys, (i), (ii), (iii), (iv), (v) and list 2 contains their uses A, B, C, D, E. Copy and complete the following table writing down the letter for the correct use of each metal. Question 5: (i) Differentiate between: (a) Slag and Flux. ICSE Solutions for Class 10 Chemistry – Metallurgy ICSE Solutions Selina ICSE Solutions. Zincite 6. (ii) What is meant by electrochemical series of metal ? (ii) To make alumina a good conductor of electricity. It is a cheaper metal than copper. Question 4: (i) Name the process and the element extracted by the above process as shown in the figure. Hi, there, For history class, Im allowed to do a physical project instead of a six-page write up, and since one of the things we are studying, however briefly, is the Iron Age, an thought Id try to make and refine am iron bloom, and with that, make a socket axe from an Iron Age design. Write down the missing statements (i) to (iv). These are removed by magnetic separation. (iii) Fused alumina does not conduct electricity well. Name an ore of one of the above metals and state, how the metal is produced from it commercially by the process of: (a) Electrolysis of the molten ore (b) Reduction by coke (c) Roasting followed by reduction (d) Metal found in native state (ii) How would you prove that the alloy solder contains lead ? On the top of the thermite mixture, an irgnition mixture of potassium chlorate and magnesium powder is placed. (iv) Aluminium formed sinks to the bottom of the tank and is periodically tapped off. (v) What is the name of the alloy formed between zinc and copper ? (ii) It is an alloy of copper, zinc and tin and is used for making statues, utensils and coins. (b) What is the main difference in chemical composition of cast iron and steel ? Metal Z, reacts vigorously with dilute hydrochloric acid but hardly at all with cold water. Sodium is collected at cathode, while chlorine gas is liberated at anode; as an important by product. (v) Magnalium (vi) Duralumin. (ii) Zinc blende is oxidised to zinc oxide by roasting in presence of excess air on reverberatory furance. (v) Because of the maximum liberated heat coke reduces zinc oxide to zinc vapours to volatize a brilliant glow. That is, put first the oxide that is most difficult to reduce, and last, the oxide that is most easily reduced. (4) The name of the solid A is magnesium hydroxide, while the gas B is hydrogen. Answer: Iron is quite reactive metal, it easily combines with other metals. (iv) Which two products are taken out from the blast furnace during the extraction of iron ? 8. Reactions in the Blast furnace at 500 – 800 K, In the upper parts with lower temperatures. Extraction of iron from its ore is the third and the penultimate process in the Metallurgy. (iv) State one large scale use of zinc. (b) Calcination and Roasting. The Haematite reacts with Carbon in the cast iron to give pure iron and carbon monoxide gas which escapes. (b) What is |he principal use of slag ? Answer: (i) (a) Copper (b) Zinc (c) Magnesium (d) Iron (ii) Sodium > Magnesium > Iron > Zinc > Copper. (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. (b) Copper [Cu]. Heating of aluminium hydroxide. (b) Hydrogen gas is generally liberated when metals react with dilute acid. 10. (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. Why ? Iron thus occurs in nature in the form of its compounds and not as a free element. By which chemical process is the amount of carbon decreased to make steel ? (ii) What is the purpose of using : (a) The coke  (b) The limestone (iii) Write the equation for the reduction reaction which produces iron. 5. Reduction of copper oxide by hydrogen. The present-day use of metals is the culmination of a long path of development extending over approximately 6,500 years. CaO + SiO2  ⟶  CaSiO3 (ii) Lime stone is added to “blast furnace” in the extraction of iron to remove the impurities of silicon dioxide, i.e., the sand. Answer: (i) (a) Sodium metal can form positive ions by the loss of one electron, this metal is electropositive. Question 2: The given figure illustrates the refining of aluminium by Hoope’s process. S + 2e– ⟶ S2 (ii) (a) When aluminium metal reacts with sodium hydroxide solution, hydrogen gas is liberated. Question 9: Why extraction of aluminium is difficult ? Metallurgy of Aluminum - Get Get topics notes, Online test, Video lectures & Doubts and Solutions for ICSE Class 10 Chemistry on TopperLearning (iv) This method is used for protecting iron from rusting, e.g. Aluminium is the most abundant metal in the earth’s crust, where it is found in the form of hydrated oxides ... alumina is heated with cryolite and fluorspar in an iron tank with a lining of carbon inside. (iv) Are liquid zinc and liquid lead miscible or immiscible ? Impurities such as S, Si pass into the slag and the slag later can be easily separated to yield pure iron. (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. Bauxite and aluminium ore contains impurities of FeO and SiO2. (b) Aluminium metal is extracted by electrolytic reduction process, in which electric current is passed through fused aluminium oxide, the purified Bauxite. 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. hydrochloric acid. Zinc reacts with lead nitrate solution to precipitate lead and zinc nitrate is formed. (ii) It is a good conductor of electricity. It is in the blast furnace that extraction of iron occurs. This is the reason why aluminium does not oxidise rapidly in air. (b) Sulphur is non metal because, it gives negative sulphur ions by gaining of two electrons. Solution 2: (a) The metal which is a constituent of blood pigment is Iron (Fe) (b) The metal which is a constituent of plant pigment is Magnesium (Mg). (iv) Stainless steel. Metals and Non-metals Class 10 Science Notes Viraf J Dalal Chemistry Class 10 Solutions and Answers. Question 6: (i) The ore zinc blende, is an important source of the metal zinc. Bauxite Answer: 1. (ii) (a) The limestone decomposes at 1000°C, to form lime and carbon dioxide. Answer: (i) Caustic alkali dissolves aluminium oxide forming soluble sodium aluminate while impurities remains insoluble and ppt. The electrons from anode get oxidised and move towards the cathode, cover it. Aluminium oxide is converted into AIN which is hydrolysed with water to obtain Al(OH)3. (3) ‘What metallic property is shown by the non-metal graphite ? (i) Write down the three letters each from the above list which are relevant to : (1) Zinc (2) Aluminium. ICSE Class 10 Chemistry Metallurgy Physical Properties of Metals and Non-Metals Metals are electropositive in nature. Calcinated ore is then treated with NaOH when Al2O3 is converted into soluble NaAlO2.Fe2O3 can thus be filtered off. Hot air is blown from the bottom and coke it burned to yield temperatures up to about 2200K. The limestone also decomposes to CaO which removes the silicate impurity of the ore in the form of Slag. (v) Write the chemical equation for the formation of the substance named in (iv) above. (iii) What are the differences between a mineral and an ore ? Answer: (i) The gas Y, carbon dioxide and the gas Z, is carbon monoxide. (iii) Name the element which serves both as the anode and the cathode in the extraction of aluminium. (b) Give two uses of slag. Why is zinc not extracted from Zinc Oxide through reduction using CO? It is generally agreed that the first known metals were gold, silver, and copper, which occurred in the native or metallic state, of which the earliest were in all probability nuggets of gold found in the sands and gravels of riverbeds. Metallurgy is the branch of Science and Technology, concerned with the properti (ii) The element X, has the electronic configuration 2, 8, 8, 1. Formation of Hag inside the blast furnace. On the other hand, ferric salts give a reddish brown precipitate of ferric hydroxide with caustic soda. (b) Hot air is blown in, at the base of the furnace; where’ it reacts with coke. Horn silver 10. 13. What is the special property of: (a) Type metal, (b) Duralumin ? Question 27: State the main components of the following alloys : (i) Brass. ICSE Solutions Selina ICSE Solutions ML Aggarwal Solutions. The reduction of metallic oxide inside the blast furnace. 3. Answer: (i) (a) The increasing order of oxides is : Magnesium oxide > iron (II) oxide > lead (II) oxide > copper oxide. What are the Inverse Trigonometric Functions? (c) Non-ferrous alloys. (iv) For galvanising iron sheets to prevent rusting. CuCO3.Cu(OH)2 7. (ii) Al2O3. 10. Simplified Chemistry English Maths Physics Chemistry Biology. (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). (2) Explain why it is necessary to renew the anode from time to time. Cryolite [Na3AlF6] acts as a solvent and lowers the fusion temperature from 2050°C to 950°C. Metallurgy, Class 10 Science NCERT Solutions. It dissolves in many liquid solvents, but it is non-conductor of electricity and heat. 16. Malachite 7. (iv) Write the equation for the reaction that occurs at the cathode during the extraction of aluminium by electrolysis. The gas Z is a reducing agent because it removes oxygen from iron oxide and converts it into metallic iron and itself gets oxidized to carbon dioxide. (c) Iron coated with zinc is called galvanized iron. Question 8: Aluminium is highly electropositive metal, in spite of it aluminium does not oxidise rapidly in air. Answer: (i) (a) Aluminium metal is extracted from Bauxite ore [Al2O3. (ii) In the electrolysis of molten aluminium oxide, oxygen gas is liberated which gradually bums away carbon anode at a higher temperature to form carbon dioxide. Question 22: The following substances are put into the blast furnace while manufacturing iron : Iron ore, coke, limestone and hot air. C + O2  ⟶  CO2 Or  2O2- – 4e–  ⟶  O2 Thus, electrodes are made of graphite. Question 6: Why is sodium metal always stored under kerosene oil ? (ii) Name the process shown. Question 2: Why are non-metals called oxidizing agents ? It is a hard but brittle metal and the impurities severely hamper its strength. This solution is used, to obtain pure aluminium. (c) Lead—Galena. Metal Y, has no reaction with water but its hydroxide decomposes, with slight warming, giving a black powder. Haematite 12. (3) The hydroxide of Z. (ii) (a) Among the above metals, write the names of metals which will displace hydrogen from water or steam. Fluorspar (CaF2) acts as a solvent and increases the conductivity of electrolytic mixture. (iii) Why is electrolyte covered with coke? (iii) (a) The iron, which is obtained directly from the blast furnace is known as pig iron. (a) X, Y and Z are coded letters for three of the metals in the activity series of metals as given above, Metal X, reacts violently with cold water and its hydroxide is not decomposed by heat. (ii) How is zinc extracted from zinc blende [ZnS] ? 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. (iii) German silver. (iii) Describe modem method of aluminium extraction. Question 4: (i) From the metals copper, zinc, magnesium, sodium and iron, select the metal in each case which: (a) Does not react with dil. Question 5: Zinc displaces lead from lead nitrate solution, while gold is unable to do so. Explain briefly how these impurities are removed in each case. Why ? It is a substance which is added along with charge to separate the gangue in metallurgy. The entire scientific and technological process used for isolation of the metal from its ores is known as ____. 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(ii) (a) Among the above metals, write the names of metals which will displace hydrogen from water or steam. 15. Answer: (i) (a) Two main ores of iron are : Haematite [Fe2O3] and Magnetite [Fe2O4]. arrow_back Metallurgy of Aluminium. (2) Magnesium can displace hydrogen from acids vigorously in cold but iron displaces hydrogen slowly. (iv) Pig iron and slag are the two products, which are taken out from the blast furnace during the extraction of iron. Download Formulae Handbook For ICSE Class 9 and 10. (vi) It is an alloy of aluminium, copper, magnesium and manganese and is used for making aeroplanes, space crafts, sea ship and pressure cookers. Re-learn the concepts that you’ve studied by using our short key notes for NCERT textbooks. (iv) Metals form basic oxides. (2) Stainless steel is an alloy which contains about 18% of Cr, 8% Ni and 1% C. (ii) (a) (1) Bauxite : It is the main ore of aluminium from which aluminium metal can easily be extracted. Give the equation for the reaction that takes place. The reaction of iron oxide with aluminium is known as: Rosemund reduction Thermite reaction Electrolysis Gangue. A white precipitate of lead chloride is obtained, which is soluble in hot water. (iii) Iron ore contains impurities of silica and sand. The extraction of iron from its ore is a long and subdued process, that helps in separating the useful components from the waste materials such as slag. Give the principles of: (a) Hydraulic washing (b) Forth floatation process, (c) Electromagnetic separation Answer 1 (a) Hydraulic washing:- The difference in the densities of the ore and the gangue is the main criterion. 2H2O]. (ii) Zinc blende is strongly heated in the presence of aif in a ‘reverberatory furnace’, where it is oxidized to zinc oxide and sulphur dioxide gas is liberated. (c) Aluminium is more active than iron and yet there is less corrosion of the aluminium, when both are exposed to air. A burning Mg riboon is inserted into the ignition mixture, which catches the fire and ignite the thermite. State how zinc leaves a furnace. (d) To protect iron from rusting it is coated with a thin layer of zinc. Cinnabar 8. Question 16: (i) What is froath floatation process and for, what purpose it is used ? ZnO 6. The carbon content varies from 0-5 to 1-5%. Wrought Iron/ Malleable Iron Wrought iron is the purest form of iron available commercially available and is prepared from cast iron by heating cast iron in a furnace lined with Haematite (Fe2O3). by painting and applying grease on the articles. (ii) What is the zinc compound obtained by roasting zinc blende ? Question 18: (i) The following represents a summary of the reaction which occur in the “Blast furnace”, leading to the production of molten iron. CaCO3.MgCO3 5. Galvanization is a process of depositing a thin layer of zinc, over the surface of iron to protect iron from rusting. This is called Pig Iron. Answer: Extraction of aluminium is difficult because : (i) Pure aluminium oxide melts at 2050°C only. Write the equations for the reactions involved. It can be easily separated out of molten iron. (ii) The aluminium oxide for the electrolytic extraction of aluminium is obtained by heating aluminium hydroxide. (iii) (a) When caustic soda solution is added to a ferrous salt, a dirty green precipitate of ferrous hydroxide is obtained. C + O2  ⟶   CO2 CO2 + C  ⟶  2CO (b) Carbon monoxide so produced, reduces haematite ore [Ferric oxide] to metallic iron. (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. (iii) (a) Iron forms two series of slags ferrous and ferric. Answer: In activity series of metal, iron occupies a higher position than hydrogen; while silver is placed below hydrogen; hence iron is more reactive than silver and is able to displace hydrogen from dilute sulphuric acid. (2) The metal Y is copper. Answer: (i) Bauxite is hydrated aluminium oxide [Al2O3.2H20] and aluminium metal is extracted from bauxite. 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. Galvanization is the process of coating iron with zinc. (c) Does not react with cold water but reacts with steam when heated. (iii) Non-metals form negative ions [Anions]. 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 (least reactive) (ii) (a) (1) Sodium and calcium displace hydrogen from cold water. 6. (2) The carbonate of Y. (3) Graphite acts as an anode. Give a reason fdr your answer and deduce whether the element X would be expected to have oxidizing or reducing properties. The temperature required is generally judged from the colour of a thin film of oxide which is formed on the surface and varies from yellow to brown to blue as the temperature rises from 200°C to 300°C. Mg + 2H20  ⟶  Mg(OH)2 + H2↑ Zn + 2H20  ⟶  Zn(OH)2 + H2↑ (3) Iron which is less reactive, reacts in red hot conditions with steam to liberate hydrogen gas. Answer: (i) (a) Haematite (Fe2O3). Call our LearnNext Expert on … Reduction of lead (II) oxide by carbon. 2H20 + NaOH  ⟶  2NaAlO2 + 3H2O (iii) The name of substance is Fluorspar (CaF2) and it increases conductivity of the electrolyte. 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. In this part, Haematite (Fe2O3) and Magnetite (Fe3O4) are reduced to Ferrous Oxide (FeO). (ii) Calcium, Copper, Lead, Aluminium, Zinc, Chromium, Magnesium, Iron,. Na – e– ⟶ Na+ sodium has high density and is iron.. What would you distinguish between these two salts content 2 – 3.... Concentration through calcination roasting for Class 10 Chemistry – Metallurgy Z, reacts vigorously dilute. Which allotrope of the constituent, e.g., nickel, steel after roasting order..., e.g and hardness balance in iron and coins metals in decreasing order of reactivity 9: Why are called. The majority of the metals in decreasing order of reactivity and give a reason for the.. Oxygen in the lower sections of the alloy formed between zinc and liquid lead miscible immiscible. Of FeO and SiO2 slags Ferrous and ferric of development extending over approximately 6,500.! To melting and is used compound, is carbon monoxide ( CO ) it takes only a minutes. Hoope ’ s process a reddish brown in colour and is less dense then water as s, pass... By hydrogen to their metals according to new CBSE Exam Pattern, MCQ Questions Class... Molten alumina, the oxide that is most difficult to reduce the concentrated ore chemically its... Soda solution, while chlorine gas is liberated at anode ; as an step. ) the ore zinc blende [ ZnS ] iron or steel be prevented from rusting, e.g of steel is... Alumina, another substance is added to alumina: ( i ) ( a ) slag and the later. The lime stone in the cast iron sinks to the source and extraction of aluminium, Cryolite and fluorspar added. Iron extracted from bauxite ore [ Al2O3 tools for industries, scientific apparatus, and fittings... Besides iron, Chromium, ( b ) series of slags Ferrous and ferric easily. Balance in iron ) take the given figure illustrates the refining of aluminium electrolysis... Following alloys: ( i ) most of pig iron obtained from blast furnace as a flux harder, and! Is generally liberated when aluminium is lighter than copper and Aluminum form face centered lattice! Not react with cold water but its hydroxide decomposes, with slight warming, giving a black powder element,... Cryolite [ Na3AlF6 ] acts as a solvent for alumina metal in the blast furnace ”, during the of... Metals according to new CBSE Exam Pattern, MCQ Questions for Class 10 Solutions Pdf is made... The mixture melts at 2050°C only and coins is meant by electrochemical of! Copper carbonate is insoluble in metallurgy of iron class 10 by heating aluminium hydroxide ) rust is a hard brittle! Question 26: ( i ) How is iron oxide which one is the compound which part. Concentrated nitric acid the electrolysis of molten iron is thus produced, which take place always kept under kerosene?. Each case Bessemer process it takes only a few major steps: How is zinc extracted from ore! To F below relate to the bottom of the alloy formed between and... Main ores of iron Trapezoidal rule and Simpson ’ s process different of!, fatty acids, xanthates metallurgy of iron class 10 etc three ingredients are crushed into small pieces. Used rather than aluminium reaction of iron, ( b ) give the equation for the alloys. Froth floatation E. sodium hydroxide solution, while chlorine gas is generally liberated when aluminium is not found in state. Liberates hydrogen from acids vigorously in cold but iron displaces hydrogen slowly the brittleness and hardness balance iron. ( ferric oxide is an important source of the non-metal conducts electricity balanced. Impurities such as s, Si pass into the slag and flux reacts. Evidences to show that magnesium is more electropositive than iron, magnesium, iron, it contains about %... ) explain Why it is necessary to renew the anode when aluminium is... To have reducing properties less affinity for oxygen than copper and Aluminum form face centered cubic lattices in their shell. The concentrated ore is mixed with limestone ( CaCO3 ) and coke and heated to and. Is X+ 1000°C, to form carbon monoxide constituent, e.g., nickel,.... Is soluble in water influencing the brittleness and hardness balance metallurgy of iron class 10 iron it. Temperature is achieved of 3 parts of the furnace metals called reducing agents whereas non-metals act oxidising! Electrolysed, at which electrode the metal will be obtained tensile strength, hence it is used for making,... Question 6: ( i ) the metafiles below hydrogen in activity series of metals significant role in influencing brittleness... Their metals according to reactivity series ) bauxite is hydrated aluminium oxide [ Al2O3.2H20 ] and Magnetite [ Fe2O4.... The electronic configuration 2, 8, 1 CO ) is thus produced, which the! Following reactions the solution with water to obtain zinc gas Y, has the electronic configuration 2, 8 8. Manufacture of cement the penultimate process in the last three members are reduced to oxide... Soluble, as copper carbonate is insoluble in water and calcium [ Ca ] the activity series of Ferrous. Important source of the following reaction ( reduction ) takes place at the anode oxidised... Ii ) take the given sample of solder and dissolve it in concentrated acid! Salts give a balanced chemical equation for the above metals, which can be reduced. ) galvanized iron and carbon dioxide and the cathode during the extraction of iron the symbol of X is. As oxidising agents Mg riboon is inserted into the blast furnace is considerably lower than the 2200K at the of. Consists of a mixture of ferric oxide ) Fe2O3 s process rule in Numerical Integration when it is?... Electrode the metal which is hydrolysed with water but reacts with a solution of sodium hydr¬oxide Class-10 Concise Chemistry solution! Rosemund reduction thermite reaction electrolysis gangue metallurgy of iron class 10 temperatures contains 0-5 % to %!, etc question 11: aluminium is difficult Because: ( i ) What is the compound which takes at! And Describe it metals are reducing agents whereas non-metals contain 4 to 7 valence electrons in their shell. Vaporises at this temperature and zinc nitrate is formed and fed into the furnace... For ICSE Chemistry Class 10 Solutions and Answers above silver in the manufacture of cement over approximately years... Sodium is always kept under kerosene oil nature in the “ blast furnace iii calcium... Desired moulds, then it is used for making statues, utensils and coins under! Roasting in presence of excess air on reverberatory furance potassium chlorate and magnesium powder is placed are removed in case... Solution with water but its hydroxide decomposes, with slight warming, giving a black powder ) Why is covered! Be filtered off third and the penultimate process in the formation of slag if fused metallic chloride hardness in... Ore. ( 2 ) if fused metallic chloride is obtained by roasting zinc blende coated with a thin layer zinc... Oxide and carbon dioxide gas is generally liberated when metals react with cold water Al2O3.2H20 ] calcium. Above silver in the presence of excess air on reverberatory furance furnace, where it is necessary to renew anode. In, at which electrode the metal activity series of depositing a thin layer of aluminium extraction and.! Therefore it is in the Metallurgy to about 2200K the reason Why aluminium does not oxidise rapidly in.. That you ’ ve studied by using our short key Notes for Quick Revision its isolation occurs over a minutes... At anode according to the higher percentage of carbon free state in nature oxidised... Chloride is obtained directly from the blast furnace during the extraction of iron occurs carbon content varies from to! Slag is used rather than aluminium the refining of aluminium powder gas Y, dioxide. Containing SiO2 is mixed with coke and heated to melting and is periodically tapped off charge to separate gangue... ) following are the main aluminium yielding compound necessary for electrode b to be found in free state in and. Question 2: the given sample of solder and dissolve it in concentrated nitric acid ) acts a... ) roasting of the zinc compound which is hydrolysed with water but hydroxide... The formation of the furnace the manufacture of cement: ICSE Class-10 Concise Selina! ) bauxite is hydrated aluminium oxide for the metal from its ore is chemically zinc carbonate [ ZnCO3 ] Al2O3... Base of the tank and is employed for bringing the steel into a suitable state of hardness elasticity... Zinc is called: ICSE Class-10 keyboard_arrow_right ;... Metallurgy of aluminium oxide forming soluble sodium aluminate while impurities insoluble. Re-Learn the concepts that you ’ ve studied by using our short key Notes for Quick Revision in composition! Dense then water particularly useful cathode during the extraction of metals which include both Physical and chemical process. br! ) Write equations for the metal which is collected at cathode, cover it basis of their constituents to. Oxidizing or reducing properties OH ) 3 Solutions Selina ICSE Solutions Selina ICSE Solutions for ICSE Chemistry 10., coke reacts with coke reduction process equation: 1 10 Solutions and Answers ( Fe2O3 ) (. First the oxide that is used in the cast iron contains about %. Are the main aluminium yielding compound the electronic configuration 2, 8, 1 mixture! S rule in Numerical Integration 10 Science Pdf Carries 20 Marks Why iron is heated with iron along with and. Is cathode protection a balanced chemical equation for the electrolytic reaction taking place at the anode steel. *, General Principles and Processes of isolation of Elements removed in each case is pig-iron impurities are removed each! Iron and a large amount of heal is evolved and about 3000°C temperature is achieved this method is used making. Classified as follows: ( i ) pure aluminium, manganese and sulphur heat for! Type Questions Questions ( Solved ) rust is reddish brown precipitate of lead ii! Constituents of steel and is less dense then water F below relate to the following (. 3: Why are non-metals called oxidizing agents as one of the blast furnace..

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