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- What are the chemical process required to extract steel ingot from iron ores using naturally occuring resources such as coal, wood and a type of furnace called bloomery.a metal is obtained directly by roasting of its sulphide ore. name that metal.Heating pyrites to remove sulphur is called:(a) Smelting(b) Calcination(c) Liquation(d) Roasting
- Explain about passivation in metalsPlease do not give solution in image format thanku Minerals are grouped by their chemical composition. The major groups or families of mineralsinclude the Silicates, Oxides, Sulfates, Sulfides, Carbonates, Native elements, and the Halides.Match the following chemical formulas from a variety of minerals to the mineral family to which theybelong based on their chemical formula.Fe203PbSCaCO3(Mg,Fe)2SiO4AuCaSO4 H2ONaClOxidesSulfidesCarbonatesSilicatesNative elementsSulfates[Choose ]What is the basic principle of zone refining of metals?
- coke formation on catalyst surface cannot be limited by ? a. addition of hydrogen b. addition of hydrochloric acid c.addition of water d. burning off cokeThe earthy impurities associated with mineral used in metallurgy are called(a) Slag(b) Flux(c) Gangue(d) OreDuring smelting, an additional substance is added which combines with impurities to form a fusible product. It is known as:(a) Slag(b) Mud(c) Gangue(d) Flux
- The ore alvite often has a formula: (Hf, Th, Zr)SiO4.xH2 Suggest why Thorium would be an isostructural substitute for hafnium or zirconium in the mineral structure. (Inorganic Chemistry)The process of releasing metal atom from the cathode surface in hollow cathode lamp is called a. Atomization b. Vaporization c. Oxidation d. SputteringA steel sheet will have a thin layer of zinc put on one side to protect it from corrosion. Determination of the zinc film thickness per one centimeter square of steel sheet when a 2 A current is employed and the electrolytic deposition process is completed in exactly 30 minutes at 25 degrees Celsius. With a 1 M zinc solution, it's safe to presume that its concentration will remain stable throughout the process.