It converts an ore into its oxide by heating it above the melting point in the presence of excess air. (b) Sodium hydroxide: Sodium hydroxide dissolves bauxite to form sodium meta aluminate, removes insoluble impurities from Al. For more answers visit…. Questions No: 2. Used for cutting tools for high speed lathes. hydrochloric or sulphuric acid and give out hydrogen gas. Differentiate between calcination and roasting. Wrong! While roasting is a process that is used for converting sulphide ores, calcination is generally used in the oxidation of carbonates. 2. Reduction 5. WHAT IS METALLURGY? Roasting Definition: Roasting is a process in metallurgy in which a sulfide ore is heated in air. (c) Slag: It is the fusible product formed when flux reacts with impurities during the extraction of metals. nitrogen. This document is highly rated by Class 10 … Question 1: Define the term ‘metallurgy'. 3. Metallurgy The process of extracting metals from their ores and refining them for use is known as metallurgy. Captcha* CBSE Board and UP Board Sulphide ores are … Common terms used in discussing metallurgical operations : 1. What is Metallurgy? Maximum students of CISCE Class 10 prefer Selina Textbook Solutions to score more in exam. What would be the CBSE Exam 2020-2021 Date Sheet for. The electrolyte used is a salt solution of a metal which is to be refined. 4. Lost your password? Conversion of metals into their oxides at high temperature in absence of air (or) limited supply of air is called calcination. The processes involved in Metallurgy are: 1. sulphur. (ii) Discharge of ions: Metals are discharged at the cathode during electrolysis whereas non-metals are liberated at the anode during electrolysis. 1. (b) Forth floatation: This process depends on the preferential wettability of the ore with oil and the gangue particles by water. Wrong! b) Match the items of Column I with items of Column II. Roasting and calcination 4. Crushing and Grinding 2. Differentiate between roasting and calcinations process in metallurgy. Metallurgy 1. (b) (i) The process used for the purification of bauxite is called Bayer's process. (b) Molten impure aluminium forms the bottom layer. Conversion of the enriched ore into the oxide of metal. Solution 1: The process used for the extraction of metals in their pure form from their ores is referred to as Metallurgy. Conversion of metals into their oxides in presence of air is called roasting. Hence, the concentrated ore is converted into the oxide of metal which is then reduced to metal. (iv) Oxidizing and reducing property: Metals ionize by loss of electrons and hence are reducing agents whereas non-metals ionize by a gain of electrons and hence are oxidizing agents. Roasting furnaces are in a class of reactors used by the metallurgical industry in a preparatory step for the conversion of ores to metals. The bottom layer has a carbon lining and serves as an anode. A. The process may convert a metal sulfide to a metal oxide or to a free metal. Charge : The mixture of materials fed to a furnace […] carbon. Metallurgy, Class 10 Science NCERT Solutions. Correct! In simple terms, metallurgy is the process used in the extraction of metals from their ores. EXTRACTION TECHNIQUES AND METALLURGY BY KOUSHIK KOSANAM PUNEET C S 2. Chemistry Class-X 1 Questions Bank Question Bank Metallurgy II 1. Carbon forms alloys. No negative marking for incorrect choice. Updated September 09, 2019. This conversion to oxide is done by the process of calcination or roasting. You will receive a link and will create a new password via email. The questions involved in Selina Solutions are important questions that can be asked in the final exam. Roasting vs Calcination . This process is applied in the case of sulfide ores. Which is the best website providing NCERT Solutions? In other words, the process of obtaining a metal from its ores is called metallurgy of the metal. © 2019 Tiwari Academy. Question 1: What is not true about calculations? For example: Gold is too soft to be used without small percentage of copper. When we talk about roasting, it is basically a process of metallurgy where ore is converted into its oxide by heating it above its melting point in the presence of excess air. 4; NCERT Solutions for Class 10 Science Chapter 3 Important Board Questions Metals and Non-Metals NCERT Books for Session 2020-2021 CBSE Board and UP Board Long Type Question Questions No: 2 . (b) A neutral gas other than oxygen which is formed at the anode during electrolysis of fused. Metallurgy ,Metals and Non Metals - Get topics notes, Online test, Video lectures, Doubts and Solutions for CBSE Class 10 on TopperLearning. In this process, the ore is partially or completely oxidized and the impurities of sulfur and arsenic present in the ore are removed. Previous. (iii) The two aluminium compound in the electrolyte C is Na. (d) In construction the alloy of aluminium -duralumin is used because it is hard and resistant to corrosion. Revise Chemistry chapters using videos at TopperLearning - 916 a) Calcination and roasting are pre-treatments in metallurgy before metal extraction. The process of purifying a metal is called refining. The ore zinc blende is roasted in order to get zinc oxide. Please enter your email address. Impure metal is made anode while a thin sheet of pure metal is made cathode and electrolyte used is a salt of the solution of a metal to be refined. (ii) Processes involved in Refining of ores are: (b) Gangue: Earthly impurities including silica, mud etc., associated with the ore are called gangue. Watch Metallurgy Videos tutorials for CBSE Class 10 Chemistry. Common terms used in discussing metallurgical operations : Principles of metallurgy ; Metallurgical Operations; Enrichment or dressing of an ore Conversion of the enriched ore into the oxide of metal; Extraction of metal from metal oxide. (c) Acid: It reacts with acids to produce salt and hydrogen. Table of Contents. Ltd.. Roasting and calcination: In metallurgy, the process of heating a concentrated ore in the presence of oxygen is known as roasting. Correct! roasting. Correct! (c) Nitric acid can be stored in aluminium containers as the dilute and conc. It is easier to obtain metals from their oxides than from their carbonates or sulphides. Mg. Zn. Using Selina Class 10 solutions Metallurgy exercise by students are an easy way to prepare for the exams, as they involve solutions arranged chapter-wise also page wise. Refining (d) Base: Aluminium reacts with boiling and dilute alkalies to produce meta aluminate while with fused alkali produce aluminate. Click on image to update the captcha. (b) Water: Water has no action on aluminium due to the layer of oxide on it. While calcination is mostly used in the oxidation of carbonates, roasting is a method that is used for converting sulphide ores. Calcination. (c) Electromagnetic separation: Magnetic properties of the ores. All Rights ReservedWith Develop by IMMWIT Pvt. ICSE Rankers is a free educational platform for icse k-12 students. (b) The tendency to corrosion: The metals lying above the hydrogen inactivity series can easily react with moisture and air and corrode easily whereas the metals such as gold and platinum do not corrode easily. This video is highly rated by Class 10 students and has been viewed 5 times. Class 10 NCERT Solution Metals and Non-metals. This action is mainly used for sulfide ores. (c) Reaction with water: The ability of the metals to reduce water to hydrogen decreases on. For ores containing carbonate or hydrated oxides, heating is done in the absence of air to melt the ores, and this process is known as calcination. Used for making rock drills and armour plates. State the processes involved in metallurgy. The test will consist of only objective type multiple choice questions requiring students to mouse-click their correct choice of the options against the related question number. Chemistry Class … Roasting is the process of heating concentrated ore alone or mixed with other substances in the presence of a controlled amount of air without melting. Electrolytic refining of metals is the separation of residual impurities like Si and phosphorus. (b) Ores are those minerals from which the metals are extracted commercially at low cost and with minimum effort. Give the names of the following metals : (i) A metal commonly used for preventing rusting of iron. Fe. Next. (d) Reaction with acids: All the metals above hydrogen, in the activity series, reduce hydrogen ions from dil. (d) Smelting: Smelting is the process of reducing the roasted oxide ore and removing the gangue with the help of an appropriate flux added with the ore. (c) The impure metal is made the anode, while a thin sheet of pure metal is made the cathode. It renders aluminium passive due to the formation of an oxide film on its surface. Roasting is a method of Metallurgy. Save my name, email, and website in this browser for the next time I comment. Concentration 3. Example: Zinc sulphides are oxidised to zinc oxide. Home. In the multiple hearth configuration hot gases pass over beds of ore concentrate. Anne Marie Helmenstine, Ph.D. Roasting is the process in which the ore is heated below its melting point in presence of air to oxidise the impurities. eg: carbon, sulphur etc removed as their gaseous oxides. Please keep a pen and paper ready for rough work but keep your books away. (d) In Aluminium thermite welding, the reduction with aluminium is highly exothermic and heat generated is sufficient to melt the metal. Where can I get NCERT books in PDF format? The non-metal which forms an alloy is ____. Jan 02, 2021 - Mineral and Ores and Metallurgy Class 10 Notes | EduRev is made by best teachers of Class 10. NCERT Solutions for Class 10 Science Chapter 3 This action is often performed in a reflex furnace. (v) Reaction with acids: Metals above hydrogen inactivity series usually replace hydrogen from dilute non-oxidising acids whereas non-metals do not react with dilute hydrochloric acid or sulphuric acid. Note: – Before viewing Solutions of Metallurgy by Dr Viraf and J Dalal Simplified ICSE Chemistry Solutions of Chapter-6 .Read the Chapter-6 Metallurgy Carefully to understand the concept in better way .After reading the Chapter-6 Metallurgy solve all example of your text book with ICSE Specimen Sample Paper for Class-10 Exam of Council. 2020-2021 cbse chapter 3 class 10 class 10 science metals and non-metals ncert science. Important Board Questions Pure metal deposits at the cathode and impurities settle down forming anode mud. Metals and Non-Metals Soluble basic oxides dissolve in water forming an alkaline solution whereas oxides of non-metals are usually acidic. • Metallurgy is a domain of materials science and engineering that studies the physical and chemical behaviour of metallic elements, their inter-metallic compounds, and their mixtures, which are called alloys. Calcination is the process of heating the ore below its melting point an absence of air to remove volatile impurities like arsenic etc. oxygen. (a) Roasting-is the process of heating concentrated ore to a high temperature in the presence of air. Wrong! Nov 24, 2020 - Metallurgy Basic Concepts - 10 CBSE / ICSE | Roasting and Calcination | Froth Floatation | Class 10 Video | EduRev is made by best teachers of Class 10. Question 2: … nitric acid does not react with aluminium. NCERT Books for Session 2020-2021 Metallurgy Class 10 Note. Along with this, you will also learn - What are Minerals and What are Gangue (Matrix). (c) Aluminium has a great affinity towards oxygen and so cannot be reduced by carbon or carbon monoxide or hydrogen whereas lead oxide can be easily reduced to metal lead by carbon. Which of the following does not give H 2 when added to dilute HCl? Example: Roasting ZnS may yield ZnO; roasting HgS may yield free Hg … (d) Graphite: Acts as cathode as well as anode. (iii) Nature of oxide formed: Oxides of metals are usually basic. When CBSE Date Sheet 2019-2020 for Class 10 and Class, On social and economic issues, it advocates liberty, social justice,…, Several theories have been advanced by Lincoln scholars to explain…, Right to examine decision making process. The rate of reaction decreases on moving down the series. (b) (i) Oxides: Sodium and calcium oxides are stable to heat. There will be total 10 MCQ in this test. Carbon is alloyed with iron along with nickel and chromium to form steel. (c) A layer of aluminium is formed on iron at high temperature during cooking and food becomes deficient in iron. Moisture and non-metallic impurities in the volatile gases are extracted during the process of roasting. [1] (ii) Two metals which can be prepared by electrolysis from their fused chlorides [1] There are three widely used roasted furnaces: multiple hearth, fluidized bed, and flash roasters. Long Type Question Used for making utensils, cutlery, ornamental pieces and surgical instruments. During roasting, moisture and non-metallic impurities in the form of volatile gases are released. (b) Roasting provides oxygen to convert metallic sulphides into metallic oxide and SO. Roasting. Carbonates, bicarbonate ores are subjected to calcination process. Process of roasting … (iv) It is necessary to continuously replace electrode B from time to time as it gets oxidized by the oxygen evolved. Cu. (a)to remove all organic matter (b)to convert ore into metal (c) to remove moisture from the ore (d)to decompose carbonates and hydroxides. this chemistry blog is for 10 class icse, cbse and pg students; main contents of this blog are (1) 10th class chapter wise questions, past papers, tips and video lecture on hard topics. From its ores is referred to as metallurgy from its ores is called roasting oxide. 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