Carnallite is an ore of which of the following metals?(A) K and Mg(B) K and Al(C) Na and K(D) Na, K, and Al. Ans: Hint: An ore is a naturally occurring substance in the deep down earth. ... We can see numerous examples like Cinnabar is an ore of mercury, Borax is an ore of sodium, etc. * Carnallite is an ore having chemical formula, …
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Because sodium is extremely reactive, it never occurs in the free state in Earth's crust. In 1807 Sir Humphry Davy became the first to prepare sodium in its elemental form, applying electrolysis to fused sodium hydroxide (NaOH). Sodium is an important constituent of a number of silicate materials, such as feldspars and …
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iv) Name some other reducing agent which can be used to extract metal from metal oxide? Ans: Aluminium, Sodium and Calcium. v) Give the complete reaction when manganese dioxide is heated with Aluminium powder. Ans: 3MnO2(s) + 4Al(s) 👉 3Mn(l) + 2Al2O3(s) + heat. CASE STUDY : 3 on Metals and Nonmetals
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On passing electricity through molten sodium chloride, decomposition occurs and sodium metal and chlorine gas are formed. Molten sodium chloride contains sodium and chloride ions. The reactions that occur during electrolysis are: 1. The cathode produces electrons to reduce sodium ions to sodium atoms (or sodium metal) by acting as reducing agent.
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(i) Name the most common ore of the metal aluminium from which the metal is extracted. Write the chemical formula of the ore. (ii) Name the process by which impure ore of aluminium gets purified by using concentrated solution of an alkali. (iii) Write the equation for the formation of aluminium at the cathode during the electrolysis of alumina.
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Name an ore on which roasting is done. Give balanced equation. (b) Define calcination. Give an example and equation for calcination. ... Oxides of highly active metals like sodium, potassium, aluminium have great affinity for oxygen and so cannot be reduced by common reducing agents like carbon, carbon monoxide or hydrogen whereas lead is in ...
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The two methods used for extracting sodium metals are, * Castner's process: By the electrolysis of fused caustic soda. * Down's process: By the electrolysis of fused sodium chloride. ... Name one ore of sodium. Name the sodium compound present in this ore and write its chemical formula. (d) How is sodium metal extracted? Explain with the help ...
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Learn about the factors that influence the choice of method for extracting metals from their ores, such as reduction by carbon, by a reactive metal, or by electrolysis. See examples …
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Importance of aluminum as a metal. Aluminum is an important metal due to its unique combination of properties, making it a valuable material in various industries and applications. Some of the key …
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Learn how Aluminium is extracted from its ore Bauxite by Hall's method and Hall-Heroult process. Find out the properties, uses and sources of Aluminium, a …
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The metals sodium, calcium and magnesium are obtained by electrolysis of their molten chloride salts. In this process metal is deposited on the cathode while chlorine gas is liberated at the anode. Question 32. Name the main ore of aluminium. Answer: Bauxite (Al 2 O 3 ·H 2 O) is the main ore of aluminium. Question 33. What is bauxite?
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Hot NaOH reacts with the bauxite ore which leads to the formation of sodium aluminate which is water-soluble. The solution of sodium aluminate is then diluted with …
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Name the following metals. i A metal present in cryolite other than sodium.ii A metal which is unaffected by dilute or concentrated acids. iii A metal present in period 3, group 1 of the periodic table. ... Cryolite is Na 3 AlF 6 (sodium hexafluoro aluminate) therefore other than sodium, it also contains Aluminium. (ii) Platinum is a metal that ...
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(i) Name a metal which is found abundantly in the earth's crust. (ii) What is the difference between calcination and roasting? (iii) Name the process used for the enrichment of sulphide ore. (iv) Write the chemical formulae of one main ore of iron and aluminium. (v) Write the constituents of electrolyte for the extraction of aluminium.
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Learn how different metals are extracted from their ores by chemical, physical or electrochemical methods. Compare the advantages and disadvantages of …
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Thus, pure Aluminium metal is obtained from the chief ore of Aluminium which is Bauxite. Uses of Aluminium . Due to its properties, Aluminium is used in a number of fields. The main uses of Aluminium are as follows – It is widely used in aviation. We have been using Aluminium vessels for ages. Many types of utensils of Aluminium …
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(b) Which metal is extracted from cinnabar ore? (c) Name one ore of sodium. Name the sodium compound present in this ore and write its chemical formula. (d) How is sodium metal extracted? Explain with the help of the equation of the reaction involved. (e) Name three other metal s which are extracted in a manner similar to sodium.
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The aluminium oxide of the bauxite (and the reactive silica) reacts with the caustic soda forming a solution of sodium aluminate or green liquor and a precipitate of sodium aluminium silicate. Clarification : the green liquor or alumina-bearing solution is separated from the waste: the undissolved iron oxides and silica which were part of the ...
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CAUTION: Always handle sodium metal with care. Dry it by pressing between the folds of a filter paper. Put it on a watch-glass and try to cut it with a knife. Question 1. What do you observe? Answer: Observation: Metals are generally hard, but sodium is a soft metal. We observe that sodium metal cuts with the help of knife. …
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Learn about the types, uses, and extraction of metals and their ores, such as copper, iron, and gold. Explore the properties and applications of alloys, such as steel, bronze, and brass.
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How are Different Metals Found Inside Earth's crust? The earth's crust is the major source of Metals. Reactive metals do not occur in their free state . Metals like Potassium, Sodium, Calcium, Magnesium and Aluminium are found in a combined state as a sulphide ore or oxide ore. Less reactive metals are present in their free state, …
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The Preparation of Aluminum. The preparation of aluminum utilizes a process invented in 1886 by Charles M. Hall, who began to work on the problem while a student at Oberlin College in Ohio.Paul L. T. Héroult discovered the process independently a month or two later in France. In honor to the two inventors, this electrolysis cell is known as the …
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Some reactive metals such as sodium react easily with oxygen. Aluminium and iron can also react with oxygen although much more slowly. metal + oxygen → metal oxide . ... Ore - A metal ore is a rock that contains enough of the metal to make it worthwhile to extract; Hematite - the main ore of iron, in the form of impure iron(III)oxide;
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Metal: Ores: 1: Sodium(Na) Chile saltpetre Trona Borax Common salt: 2: Aluminium(Al) Bauxite Corundum Feldspar Cryolite Alunite Kaolin: 3: Potassium(K) Nitrate(saltpetre) Carnalite: 4: ... Magnetite (Fe3O4) is another important iron ore. Aluminum (Al): Aluminum is a lightweight and highly malleable metal widely used in …
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Learn about metals, ores, their properties and reactivity series. Find a list of important metals and their ores, such as iron ore (hematite), copper ore (chalcopyrite), aluminium ore (bauxite)...
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Q. Metals like sodium, potassium, calcium and magnesium are extracted by electrolysis of their chlorides in molten state. These metals are not extracted by reduction of their oxides with carbon because: a) Reduction with carbon is very expensive b) Carbon readily makes alloys with these metals c) Carbon has less affinity for oxygen than these ...
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The familiar types of metals are (iron, aluminium, copper, lead, zinc, silver, gold, etc.) are common elements. Login. ... Sodium and potassium are such metals that can be cut by knife whereas mercury is a liquid metal …
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Q. (a) Name the metal which is extracted from haematite ore? (b) Name one ore of aluminium. Name the aluminium compound present in this ore and write its chemical formula. (c) How is aluminium metal extracted? Explain with the help of an equation. (d) Name the electrode at which aluminium metal is produced.
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The metal reactivity series is a commonly taught concept in chemistry, placing the metals, as its name suggests, in order of reactivity from most reactive to least reactive. It's also a useful tool in predicting the products of simple displacement reactions involving two different metals, as well as providing an insight into why different metals…
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Name the following metals: A metal present in cryolite other than sodium. Open in App. Solution. ... a A l F 6. We know that flourine is a non metal. So the another metal present in cryolite is aluminium. Also cryolite is an ore of aluminium. Was this answer helpful? 3. Similar Questions. Q1. ... Select the metal present in sodium hydroxide ...
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