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The common name of the ore of zinc whose chemical name is zinc carbonate. 18. Two nonmetals which are lustrous. 19. A metal which has a low melting point. 20. A nonmetallic oxide which dissolves in water to give a weak acid. 21. A metal used for making bullets. 22. A metal which reacts with boiling water to liberate hydrogen gas. 23.
Calamine is a historic name for an ore of zinc. The name calamine was derived from lapis calaminaris, a Latin corruption of Greek cadmia (καδμία), the old name for zinc ores in general. The name of the Belgian town of Kelmis, La Calamine in French, which was home to a zinc mine, comes from this.
The chemical formula of zinc hypochlorite is Zn(ClO)2. ... Asked in Metal and Alloys What is the chemical formula for the chemical ... The chemical name is calcium hypochlorite and the chemical ...
Zinc is extracted from its carbonate ore (calamine), when calamine ore is heated strongly in the absence of air calcined, it decomposes to form zinc oxide and carbon dioxide. Then, zinc oxide is heated with carbon and zinc metal is produced.
Jul 26, 2018· Name the chemical formula of zinc blende and galena. Answer: Zinc blende is zinc sulphide (ZnS) while galena is lead sulphide (PbS). Question 12. Write one example each of : a metal having low melting point and a metal having high melting point. a metal which is a poor conductor of electricity and a nonmetal which is a good conductor of ...
Zinc carbonate is a white, insoluble, zinc salt with chemical formula ZnCO 3. With it, most simple zinc salts can be made by reaction with the corresponding proportions of sulfate. Zinc carbonate occurs in nature as the mineral Smithsonite aka zinc spar.
Answer. Wiki User August 07, 2010 3:03AM ... What is the chemical formula for nitrate iron? ... A variety of other metal ores ( copper, zinc, lead) are sometimes mixed with iron ores. In much ...
In this page we have Class 10 Science Metals and Non Metals Practice Test Paper. Hope you like them and do not forget to like, social shar and comment at the end of the page. ... Write its chemical formula 26) Name two metals which do not corrode 27) Which one of the metal in the following group are Au, Na, Cu, Ca? ... Name an ore of zinc ...
: Bauxite chemical name :Hydrated aluminium oxide formula : 2. ore: Cryolite chemical name :Sodium aluminium fluoride formula :Na3AlF6 3. ore ...
Jul 16, 2008· As with many metals, pure zinc can be prepared from an ore by one of two methods. First, the ore can be roasted (heated in air). Roasting converts the ore to a compound of zinc and oxygen, zinc ...
Nov 27, 2007· chemical equation please thanks. a. In the first step of refining zinc metal from its zinc sulfide ore, the ore is heated in the presence of oxygen. The products are solid zinc oxide and sulfur dioxide gas. b. The next step of refining zinc involves heating the zinc oxide in the presece of carbon. This reaction produces zinc vapor and carbon monoxide gas.
Zinc is recovered from a number of different zinc minerals. The most significant of these is sphalerite. Other minerals, such as smithsonite (ZnCO3, zinc carbonate), and zincite (ZnO, zinc oxide) are also zinc ores. Zinc is also recycled from scrap. Uses. Zinc alloys well with other metals resulting in stronger, harder metals.
Oct 01, 2019· 28.(a) Differentiate between roasting and calcination. Explain the two with the help of suitable chemical equations. How is zinc extracted from its ore? (b) Name two metals that can be used to reduce metal oxides to metals. Answer. (a) Roasting: It is a process in which sulphide ore is heated in the presence of oxygen to convert into oxide.
Formula Equation: Mg (s) + ZnSO4 (aq) → Zn (s) + MgSO4 (aq) Ionic Equation: Mg (s) + Zn2+(aq) → Mg2+(aq) + Zn (s)
General Methods of Extraction. In this lesson, we''re going to discuss the extraction of four metals: aluminum, copper, iron and zinc. In the periodic table, Aluminum is a metal of Group 13 and ...
Oct 28, 2014· What is Zinc metal formula? Answer. Wiki User October 28, 2014 8:02PM ... Why is there no Roman number in the name zinc chloride as found in most transition metal ... The chemical formula of zinc ...
Nov 01, 2016· The questions is Keep in mind that at STP the standard molar volume of a gas is /mol. The most common zinc ore in nature is sphalerite, a mineral with the chemical formula ZnS. One method of processing zinc metal from its ore involves first reacting the sphalerite with O2 gas to form zinc oxide, ZnO, and sulfur dioxide.
Zinc Mining. The most commonly available ore used in the extraction of Zinc is called Zinc Blende also known as Zinc Sulphide (ZnS). Historically extraction of zinc has been more difficult than extraction of other metals because at temperatures where metals such as iron typically begins to melt, zinc is a gas.
Question Bank Metallurgy II 1. Give the names of the following metals : (i) A metal commonly used for preventing rusting of iron. [1] (ii) Two metals which can be prepared by electrolysis from their fused chlorides [1] (iii) A metal which when alloyed with aluminium makes it as hard as steel [1]
Zinc processing, the extraction of zinc from its ores and the preparation of zinc metal or chemical compounds for use in various products. Zinc (Zn) is a metallic element of hexagonal closepacked (hcp) crystal structure and a density of grams per cubic centimetre. It has only moderate
Important amalgams Zinc amalgam. Zinc amalgam finds use in organic synthesis (, for the Clemmensen reduction). It is the reducing agent in the Jones reductor, used in analytical the zinc plates of dry batteries were amalgamated with a small amount of mercury to prevent deterioration in storage. It is a binary solution (liquidsolid) of mercury and zinc.
c. Name the process used for the enrichment of sulphide ore. d. Write the chemical formulae of one main ore of iron and Al. e. Write the constituents of electrolyte for the extraction of Al. 2. Name the main constituents metal in the following alloys: a. Duralumin. b. Brass c. Stainless Steel 3.
Jan 24, 2018· * Minerals are naturally occurring inorganic solids with a crystalline structure and a definite range of chemical formula. For example a calcite crystal is a mineral. * Ores are concentrations of minerals in rock that are high enough to be econom...
Jun 14, 2007· Name the ores of the following metals:Iron,lead,zinc,Aluminium.? I need it for my chemistry homework. Answer Save. 8 Answers. Relevance. Rohan. ... Name the ores of the following metals:Iron,lead,zinc,Aluminium.? I need it for my chemistry homework. ... The chief ore of Lead is Casseterite or tinstone.....
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