c) Quenching is employed to harden metallic materials. i. Explain the process of transforming PLAIN CARBON STEEL into MARTENSITIC STEEL. Explain the advantages of any three (3) quenching media.

Q: Why is the formation of slag useful during the smelting of iron?

A: During smelting of iron to extract the pure iron the temperature is about 1123K. Here the flux CaO…

Q: cassiterite is an ore of ?

A: Ore: It is a natural occurrence of rock in which minerals are present with economically significant…

Q: B. What are the effects of adding elements (Ni. Cr, Si and S) on steel?

A:

Q: A sample of pig iron contains 3.4 % C, 2% Si, 2% P. The remainder being iron. Discuss briefly how…

A: Steel has high tensile strength. It is one of the most important construction materials. It is used…

Q: State the function of limestone in Blast Furnace.

A: Blast furnaces help us in producion of iron from its iron ore for subsequent processing into steel.…

Q: copper can be extracted by hydrometallurgy but not zinc. explain.

A: The reduction potential of Zinc is lower than that of copper. In hydrometallurgy, in order to…

Q: A- What are the important reactions in( Fe- C ) system? B-State the purpose of adding alloying…

A: A) The important reactions in (Fe - C) system are, i) Eutectic reaction  ii) Eutectoid reaction iii)…

Q: Explain if coarse grain steel can be carburized?

A:

Q: What allows magnesium to substitute freely for iron in olivine?

A: Olivine Olivine comes under the category of silicates. It is the rock forming mineral with formula…

Q: Elemental Li and Na are prepared by electrolysis of a molten salt, whereas K, Rb, and Cs are…

A: a) Aqueous salt solutions are mixtures of ions and water. When two half-reactions are possible at an…

Q: relevance of chemistry in STEELS AND CAST IRONS -STAINLESS STEEL -CAST IRONS

A: Answer - Steel - Steel is made from iron by removing impurities and adding substances such as…

Q: • 1. What is metallurgy? • 2. Give at least 5 examples of Ferrous alloy. Explain briefly its…

A: Detail about metallurgy is given below.

Q: describe the important features of the microstructure for low carbon steel, medium carbon steel…

A: We need to discuss about different types of iron and steel.

Q: The roasting which is used to conversion of metal ores to volatile chlorides is called chloridzing…

A: Solution :      Roasting is a metallurgical process of heating ore in presence of a regular supply…

Q: Provide a general description of how hydrometallurgy is used to extract metals from ores.

A: Extractive metallurgy is the practice of removing valuable metals from an ore and refining the…

Q: (a) Write the principle of method used for the refining of germanium.(b) Out of PbS and PbCO3 (ores…

A: a) The principle method that is used in the refining of germanium is a zone refining process, and…

Q: Write down the reactions taking place in different zones in the blast furnace during the extraction…

A: In blast furnace, iron oxides are reduced at different temperature ranges. In the lower part of the…

Q: 1. What are the practical implications of alloying in carbon and alloy steels?

A: “Since there are multiple questions and it is not mentioned that which one has to be solved so I am…

Q: Describe the effects of adding Cr to steel and give a use for chromium–steel alloys.

A: The effects of adding Cr to steel are :It strongly increases the hardness and toughness of steel.It…

Q: Why do transition elements show variable oxidation states? How is the variability in oxidation…

A: The transition elements have the incompletely filled d-orbitals and furnish the cation by the…

Q: (i) Name the method of refining to obtain silicon of high purity.(ii) What is the role of SiOz in…

A: The metallic compounds which are found in nature, called as minerals whereas the minerals which can…

Q: (a) Give an example of zone refining of metals. (b) What is the role of cryolite in the metallurgy…

A: a) Zone refining of metals is the technique by which impurities are extracted from the metals and…

Q: (a) Write the principle of electrolytic refining.(b) Why does copper obtained in the extraction from…

A: Write the principle of electrolytic refining.

Q: Magnesium hydride possesses a rutile lattice. (a) Sketch a unit cell of rutile. (b) What are the…

A:

Q: e. Explain with relevant points about structure, alloying elements and characteristics.

A: Alloying elements are used to alter the chemical and mechanical properties of steel to provide them…

Q: Where is the final purification of iron and the production of various forms of steel carried out?…

A: To determine: Where is the final purification of iron and the production of various forms of steel…

Q: Give a brief explanation of this mineral Iron ore

A: Answer - Iron ore - Iron ores are rocks and minerals from which metallic iron can be economically…

Q: AZ91 alloy; a) What is its chemical composition? b) Which of the strength increasing methods are…

A:

Q: >Provide a general description of how electrometallurgy is used to extract metals from ores.

A: A technique of extraction of metal from its ore in which electrolysis is used is known as…

Q: How is steel manufactured by acid bessemer process? What are the advantages and disadvantages of…

A: The acid Bessemer process consists essentially of blowing air through molten pig iron to oxidize the…

Q: Describe the Mond process?

A: Mond process is used for refining nickel. This process takes place at very high temperatures.

Q: (i) Name the method of refining to obtain silicon of high purity. (ii) What is the role of SiOz in…

A: Zone refining: It is the process that is used to refine hard metals like silicon in the purest form.…

Q: A sample of silicate weighing 0.5000 g is decomposed and subsequently yields a mixture of NaCl and…

A: Given data: Weight of sample of silicate = 0.500g. Weight of mixture of NaCl + KCl =0.1803g. Weight…

Q: Danial is conducting an experiment to evaluate the hardenability of low alloy steel, 4340.

A: This is a multipart question . According to Guidelaine, in multipart question, we can only solve the…

Q: The diagram below shows the blast furnace: a) Complete the labels A, B and C. b) What are the main…

A: Since you have posted a question with multiple sub-parts, we will solve first three sub-parts for…

Q: 1.The max.% of carbon that can be add to iron is. ........ 2.Medium alloy steel has atotal amount of…

A: Alloy is a metallic substance composed of two or more elements. Alloys have properties superior to…

Q: Why do the alkaline earths have low resistivities?

A: Resistivity is the property of a substance that determines how a substance can efficiently resist or…

Q: How can you characterize Graphene based nano composites?

A: Graphene is a form of carbon in which the atoms are placed in honeycomb like structures. It has many…