concentration of ore class 10

Hence, the concentrated ore is converted into the oxide of metal which is then reduced to metal. This conversion to oxide is done by the process of calcination or roasting. In this process the ore is heated very strongly in the absence of air, keeping the temperature below its melting point so that volatile impurities are driven off.

 · Hematite – Fe2O3. Silicon Dioxide – SiO2. Magnesium Carbonate – MaCO3. Some physical and chemical processes are used to obtain pure metals from the ore. The process of obtaining pure metal using physical and chemical processes from ore is called metallurgy. The following processes are used in metallurgy. Concentration of the Ore.

Froth Floatation Process. In some cases for example, sulphides ores of copper, zinc and lead concentration is brought by this method. In this method advantage is taken of the referential wetting of the ore by an oil.The finely ground ore is taken in a tank containing water and 1% of pine oil or terpentine oil. A strong current of air is blown ...

Cobalt is a chemical element with the symbol Co and atomic number 27. Like nickel, cobalt is found in the Earth''s crust only in a chemically combined form, save for small deposits found in alloys of natural meteoric iron.The free element, produced by reductive smelting, is a hard, lustrous, silver-gray metal.. Cobalt-based blue pigments (cobalt blue) have been used since ancient times for ...

 · Explain-the concentration of copper pyrites and galena ores. Answer: Froth flotation: This method is commonly used to concentrate sulphide ores such as galena (PbS), zinc blende (ZnS) etc. In this method, the metallic ore particles which are preferentially wetted …

The method for removing gangue from ore depend on some differences in physical or chemical properties of ore and gangue. Filed Under: Class 10, Metals and Non-metals Tagged With: aluminium, concentration of ore, copper, extraction, gangue, iron, manganese, mercury, metallurgy, metals, minerals, occrrence of metals, ore, steps of ...

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Table 1: Grade/recovery performance of a hypothetical copper ore flotation process. Product % Weight % Cu Assay Feed 100 2.09 Concentrate 10 20.0 Tailings 90 0.1 (a) From Table 1, the Ratio of Concentration can be calculated as F/C = 100/10 = 10. If only

Class 10 Chemistry Metals and Non Metals. Extraction of Metals. Extraction of Metals. The metals at the top of the activity series (K, Na, Ca, Mg and Al) are so reactive that they are never found in nature as free elements. The metals in the middle of the activity series (Zn, Fe, Pb, etc.) are moderately reactive.

CBSE Class 10 Geography Contemporary India Book Chapter 5 "Minerals and Energy Resources" Multiple Choice Questions (MCQs) with Answers. Here is a compilation of Free MCQs of Class 10 Geography Contemporary India Book Chapter 5 – Minerals and Energy Resources. Students can practice free MCQs as have been added by CBSE in the new exam pattern. At the end of Multiple …

 · Balbharti Maharashtra State Board Class 10 Science Solutions Part 1 Chapter 8 Metallurgy Notes, Textbook Exercise Important Questions and Answers.. Maharashtra State Board Class 10 Science Solutions Part 1 Chapter 8 Metallurgy. Question 1. a. Alloy of sodium with mercury. Answer: Silver amalgam.

 · Concentration of Ore b. Conversion of concentrated ore into metal c. Refining of impure metal 9/4/2015 by shubham ranjan 18. a. Concentration of ore • The unwanted impurities present on the ore is called gangue. • By removing gangue one gets a greater concentration of metal in ore • This is called Con. Of Ore . 9/4/2015 by shubham ranjan

 · These MCQ Questions on Metals and Non-metals Class 10 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Have a glance at the MCQ of Chapter 3 Science Class 10 and cross-check your answers during preparation. Question 1. Chemically rust is. (a) Hydrated ferrous oxide. (b) Hydrated ferric oxide.

 · Metallurgy ICSE Class-10 Concise Chemistry Selina Solution Exercise-7(B) Page-129. Question 1. 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.

• Concentration of the ore, • Isolation of the metal from its concentrated ore, and • Purification of the metal. The entire scientific and technological process used for isolation of the metal from its ores is known as metallurgy. 6 After studying this Unit, you will be able to • explain the terms minerals, ores, concentration, benefaction,

 · Various methods of concentration of ore. Hand Picking. Gravity Separation Or Lavigation. ''s Table Method. Hydrulic Classifier Method. Froth – Floatation. Magnetic Separation. Leaching Or Chemical Separation. Posted by Santosh Agray at 9:01 PM.

Froth flotation is a process for selectively separating hydrophobic materials from hydrophilic.This is used in mineral processing, paper recycling and waste-water treatment industries. Historically this was first used in the mining industry, where it was one of the great enabling technologies of the 20th century.

 · WHAT IS METALLURGY? • 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. • Metallurgy comprises of 3 steps: i. Concentration of Ore ii. Isolation of metal from the concentrated Ore iii.

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Metals and Non-metals Class 10 Important Questions Short Answer Type I. Question 1. Name the following: (2012) (a) A metal which is preserved in kerosene. (b) A lustrous coloured non metal. (c) A metal which can melt while kept on palm, (d) A metal, which is a …

Overview Introduction to Extraction Of Metals: Metallurgy,The process of extracting a metal in pure form from its ore is known as metallurgy. The process of treatment depends on upon the nature of the ore, impurities, and the metal is reacts to Concentration or Benefaction of the Ore,includes the Crushing and grinding of the ore,Gravity separation or Levigation, Magnetic Separation, Froth ...

 · Metals and Nonmetals Class 10 Science Extra Questions. Topics and Subtopics in ... Concentration of ore The concentration of haematite or is done by the method of hydraulic washing. The ore is spilt into small pieces and then washed in a stream of water to remove sand, clay. In this way,a fairly concentrated ore is obtained and usually there ...

10 13 35 4 0 0: 0 0 0 0 0 0 8 28 32 171 250 663 0 341 166 0 0 0 0 0 0 0 0 0 1 0 9 0: 0 0 0 0 0 0 0 0 0 0 0 0 140 170 333 0 0 0 0 0 0 0 0 0 0 3 0 0: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 530 0 0 0 0 0 0 0 0 0 0 0 2: 71.17 72.84 59.05 70.95 69.62 88.74 56.07 79.71 102.44 213.76 198.22 397.03 140.17 462.27 537.10 757.42 625.79 983.39 1,181.08 2,037.02 ...

Answer: a. Sodium amalgam, commonly denoted as Na(Hg), it is an alloy of mercury and sodium. b. Bauxite(Al 2 O 3.2H 2 O) is the common ore of aluminium. c. Metal oxides which react with both acids as well as bases to produce salts and water are also known as amphoteric oxides. For example: Al 2 O 3 is an amphoteric oxide. An amphoteric compound is a molecule or ion that can react both an acid ...

The process of removal of unwanted material from the ore is known as concentration or dressing or benefaction of ores. It involves several steps. The separation of required material from the ore is dependent on the differences in physical properties of the compound of …

NCERT Solutions For Class 10. NCERT Solutions for Class 10 Social Science; NCERT Solutions for Class 10 Maths. ... The process of removal of the gangue from Ore is known as Concentration or Dressing or Benefaction. There are numerous methods of concentration and the methods are chosen based on the properties of the ore.

The ore concentration is defined as the chemical process of eliminating impurities like sand, rocks, silt, grit etc. from the ore to extract the metals. In simple words, the concentration of ore is the method of separating ore from the gangue, as the gangue or matrix particles are …

 · Chemistry Class 10th Chapter No. 08 Chemical Industries MCQs. CHEMISTRY – Class 10th Chapter Name : CHEMICAL INDUSTRY Chapter No. 8 Multiple Choice Questions from Text Book Note : All MCQ''s selected in this test are from OLD Matric board Papers and Text Book. Book Name : CHEMISTRY Chapter No. 8 Chapter Name : CHEMICAL INDUSTRY Total MCQ from Text Book : 38 …

Concentration of Ores. An ore of a metal is an impure source, this means other than the metal it consists of many other impurities such as sand, grit, clay, rocks etc. These impurities are collectively known as gangue. Gangue is generally commercial valueless and we must separate it from the ore. This entire process is the concentration of ores ...

 · The grade or concentration of a mineral or metal in ore directly affects costs associated with mining as well as its subsequent beneficiation and extraction of precious components. ... 10. Chilean ...

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An ore contains a metal associated with other undesired substances like sand, clay, etc. These undesired substances are collectively known as gangue (or) matrix. The process of separating gangue from an ore is known as concentration of the ore. It is also called dressing or benefaction.

 · The high proportion of sulfide (2–10 wt.%) associated with the Noril''sk-type intrusions, the high PGE content of the ores, the extensive metamorphic aureole (100–400 m around the bodies), and the heavy sulfur isotopic composition of the ores (+8–+12 ∂ 34 S) are explicable if the ore-bearing bodies are exit conduits from high level ...

The most commonly available ore in the extraction of Zinc is Zinc Blende also known as Zinc Sulphide (ZnS) and other ores include Calamine, Zincite, etc. Zinc Blende does not contain a very high percentage of zinc so it needs to be concentrated. The best concentration method for zinc ore is froth flotation.

By flowing the powdered ore in a current of water, the lighter rocky impurities can be washed away and the ore particles are left behind. For this, either table or Hydraulic classifier is used. Generally oxide and carbonate ores are concentrated by this method. i.e. haematite and cerussite. There are two gravity concentration methods.

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Concentration of ores: Removal of impurities, such as soil, sand, stone, silicates, etc. from mined ore is known as Concentration of Ores. Ores which are mined often contain many impurities. These impurities are called gangue. First of all, concentration is done to remove impurities from ores.

Extraction of metals involves three major steps: Concentration of Ore. Isolation of metal from the concentrated Ore. Purification of the metal. Isolation of metal from the concentrated Ore involves the refining of metals from the compounds. The first step is to convert an ore into an oxide. Then the oxide is reduced using a reducing agent.

b) Concentration is carried out by digesting powdered ore with a concentrated solution of sodium hydroxide at 473 – 523 K and 35-36 bar pressure. c) In this process Al 2 O 3 dissolves in alkali to form soluble sodium aluminate and silica (SiO 2 ) dissolves as sodium silicate, leaving behind the impurities.