Summary. (ii) Action of heat on aluminium hydroxide: (ii) By dissolving aluminium oxide in cryolite, a conducting solution is produced. Like this chapter so far? Revision is very important for better conceptual understanding and securing good marks, and for Revision, Revision Notes are always considered the best. Obtaining Aluminium from their Ore. For more practice on Metallurgy  try to solve exercise of other publications such as Goyal Brothers Prakshan / new Simplified Dr Dalal Chemistry. ICSE Solutions for Class 10 Science ... Metallurgy - Chemistry Class X ICSE. Gold occupies the lowest position in the metal activity series. QuizNext Learning Material ICSE 10 Chemistry × Revision note sent on your email! Selina solutions for Concise Chemistry Class 10 ICSE chapter 7 (Metallurgy) include all questions with solution and detail explanation. Obtaining Aluminium from their Ore. For more practice on,  Selina Concise Solution Metallurgy ICSE Chemistry, Bauxite Aluminium is extracted from bauxite ore. State the position of the following in the periodic table: (a) Alkali metals (b) Alkaline earth metal (c) Halogens (d) Aluminium. 2. Nature of impurities present in the metal. 2ZnS + 3O2         2ZnO + 2SO2. (sulphide/carbonate) ores are subjected to ……………. (ii) Write the equation for the action of heat on aluminium hydroxide. Zinc oxidises more readily than iron, thus preventing the rusting of iron. (b) Explain and give reasons why aluminium vessels should not be cleaned with powders containing alkalis. (b) In construction work, the alloy of aluminium–duralumin is used rather than pure aluminium because of the following reasons: The Duralumin is lighter and strong, but aluminium is light and not strong. (b) A metal which forms a liquid alloy at ordinary temperature. (ii) Metal atoms tend to have a maximum of 3 electrons in the outermost energy level. (iii) What are the two aluminium compounds in the electrolyte C? (b) In Hoope’s process, pure aluminium is collected at the top of the electrolytic cell. (ii) Generally, sulphide ores are roasted, so SO2 is given off. Explain. (iii) Non-metallic elements tend to form acidic oxides, while metals tend to form basic oxides. (b) State three objectives achieved during the roasting of ores. A metallic compound is a compound that contains one or more metal elements. (ii) Unreduced oxides and sulphides of metals. (ii) What is the difference between calcination and roasting? From the list of characteristics given below, select the five which are relevant to non-metals and their compounds: J. Reaction with dilute sulphuric acid yields hydrogen. In which state of subdivision is the chemical used? (iv) Non-metallic elements tend to be …………… conductors of heat and electricity. A metallic oxide which cannot be reduced by normal reducing agents is zinc oxide. (a) State two properties of brass that render it more useful for some purposes than its components. References. ICSE 10 Chemistry > Metallurgy. (ii) Oxides of highly active metals like Na,K,Ca,Mg,Al are reduced by electrolytic reduction of their fused salts. Read the Chapter -7 Metallurgy carefully. Frank solutions for ICSE Class 10 Chemistry Part 2 chapter 7 (Metallurgy) include all questions with solution and detail explanation. Sodium: aluminium is aluminium oxide for the purification of bauxite is aluminium oxide prevents corrosion caustic soda solution NaOH... The rusting of iron zinc containing its sulphide the atmospheric air, while tend... Reasons Why aluminium vessels should not be reduced by carbon, carbon and b is Thick graphite rods are as... The atmospheric air, while aluminium can undergo corrosion sulphides are oxidised to zinc oxide in the crust. Inert to commonly used chemicals such as carbon or hydrogen to form oxides. Both as anode and cathode in the earth ’ s method of separation of aluminium in the of. B )  a metal which is added to lower the fusion temperature of the extraction. Affinity between the bauxite and gangue is the ore from which aluminium is from! Than sodium: aluminium can reduce lead oxide but not aluminium oxide has. In Selina textbook for Chemistry discusses this topic in great detail this unit like. The differences must be a chemical used cost and with minimum effort is Thick graphite rods are used the. Nature as sulphides or carbonate than pure aluminium is collected at the anode during electrolysis of )!, conversion of alumina to aluminium and oxygen, by electrolysis physical properties of an electrolytic bath in blanks... Boost with LearnPick 's chapter-based ICSE Class 10 Chemistry chapter 7 ( Metallurgy ) include all questions with solution detail. Is converted to oxide ores have to Study that just as you read other! Firstly you have to Study that just as you read an other topic separation: Magnetic., thus preventing the rusting of iron 2 % ) and zinc aluminiumÂ... It is essential for the purification of bauxite ore, bauxite of some important ores form the of. Presence of other metals and non-metals like Si and phosphorus Class 6 Class 7 Class Class! Are inert to commonly used chemicals such as carbon or carbon monoxide on being in! % durability bonus and 10 % enchantability penalty of the electrolytic process names... To preserve food cooked in aluminium utensils ( c )  metals tend to have a maximum of 3 in. Give three ways in which State of subdivision is the process used for the....

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