Which gases are used as shielding gases in tig welding?

Q: write the balanced chemical equation of the reaction , Carbon monoxide reacts with iron ore to form…

A: When Carbon monoxide reacts with iron ore (hematite) to form elemental iron and carbon…

Q: Which of the following alloys does not contain copper?           (A) Bronze          (B) Pewter…

A: Bronze = copper + tin  Pewter = Tin + antimony + copper  Sterling silver = silver + usually copper

Q: 6 The graphite anodes have to be replaced regularly. Why is this? 7 Why is it so much more…

A: Bauxite is a sedimentary rock and it is the ore of Aluminum. The chemical composition of bauxite is…

Q: >Why does BN form compounds similar to those formed by elemental carbon?

A: The boron nitride consists of BN units, which have same number of electrons (isoelectronic) as that…

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: 4. The science and technology of extracting metals from their ores, refining them, and preparing…

A: Alloy :-  alloy is mixture of two or more elements which forms a impure substance but it never loose…

Q: Would you expect powdered solid aluminum to act as an oxidizing agent or as a reducing agent?

A: In acidic medium, In basic medium,

Q: MnO−4 reacts with Fe2+ in acid solution to produce Fe3+ and Mn2+.  Write a balanced equation for…

A: Explanation: Equation involves OXIDATION & REDUCTION reactions Ferrous ion is oxidized…

Q: Cite and explain three reasons why ferrous alloys are used so extensively.

A: Three reasons why ferrous alloys are used so extensively have to be explained below.

Q: What are the main principles of ?converting cast iron to steel

A: Ore is a mineral from which the metals are conveniently extracted in a profitable way. For example,…

Q: Write some advantages and disadvantages of ceramic materials compared to metals?

A: Metal is a very broad term in itself but in general metals are those chemical elements that are…

Q: Which compound of Ti is the most important industrial product of titanium metal? Describe an…

A:

Q: Compare and contrast the two types of metal alloys.

A: Two types of alloys,    Substitutional alloy    Interstitial alloy

Q: Draw the structure of MnO2

A: Molecular geometry is the 3-D representation of the molecule in a space. As the Lewis model is not…

Q: How are each of the following involved in iron metallurgy:(a) slag; (b) pig iron; (c) steel; (d)…

A:

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: What type of annealing process is used to refine and improve the grain structure of ferrous alloys?…

A: Explantion :- The process in which heat treatment process that changes the physical and chemical…

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 oxidation number of platinum in Pt(H2O)4 ^+2 is

A:

Q: Which metal is most likely to occur in nature as oxides, sulfides, carbonates, and silicates? Hf Hg…

A: Note: According to our guidelines we are supposed to answer only one question.  Kindly repost other…

Q: Name the principal ore of aluminium. Explain the significance of leaching in the extraction of…

A: Aluminium is generally extracted from bauxite ore.

Q: What factors determine which reducing agent is selected for producing a specific metal?

A: The reactions in which oxidation and reduction happen simultaneously are called redox reactions.…

Q: 1. Explain the magnetic properties of Mno Zno 2Fe;O, based ferrite on its structure.

A: Magnetic properties: The Magnetic properties (introductory penetrability and relative misfortune…

Q: Write the role of the following: (i) Iodine in the refining of zirconium (ii) Silica in the…

A: i) When impure zirconium is heated with the iodine, it will form volatile compound ZrI4, which on…

Q: Describe how the following changes are brought about: (i) Pig iron into steel. (ii) Zinc oxide into…

A: ( i ) Pig iron into steel: Pig iron is charged into basic oxygen furnace (BOF) and water cooled…

Q: Why are metals such as Ni and Co economical to mine and use in industrial processes even though they…

A: The major use of metals Co and Ni in industry is due to the reason that they are ferromagnetic in…

Q: The production of high-grade iron from hematite and magnetite using a blast furnace involves several…

A: Extraction of Iron Metals are extracted and isolated over the course of a few key steps: Ore…

Q: >Describe the effects of adding Mn to steel and give a use for manganese–steel alloys.

A: Manganese is generally added to steel to change its physical properties. Addition of Manganese to…

Q: What is the principal alloying element that can make a steel stainless?

A: The stainless steel is composed of carbon, chromium, manganese, phosphorus, silicon and other…

Q: List the properties of copper that make it appropriate for electric wires?

A: Copper is a metal which is commonly used for making electric wires. This is because of the following…

Q: Why is it important to use an inert atmosphere to surround the metal when arc-melting titanium?

A: Since high temperature and the flow of electrons would cause the metal to oxidize in a normal…

Q: Why lower oxidation states is more stable  than higher oxidation states for heavier p block…

A: All known elements are placed in the Modern periodic table in increasing order of their atomic…

Q: Name the method used for the refining of titanium metal.

A: Titanium is a d block element with chemical symbol Ti. It is very light as well as a strong element…

Q: Write defect reactions for FeO and NiO. What oxide would form from each of the defect reactions?

A: Solid defects are of three types: 1. Stoichiometric defects 2. Non-stoichiometric defects 3.…

Q: Aluminum is the most abundant metal in the earth's crust. It is also a common household utensi…

A: A physical change is observed when matter changes its form/ phase but the chemical identity of the…

Q: 22 ent, when present in large amounts, causes steel to become brittle and unworkable:

A:

Q: Which metals are found in carboy steel?

A: Steel is an alloy. Alloy is a mixture of two or more metals. The alloy has different properties than…

Q: Aluminum is the most abundant metal in the earth’s crust. It is also a common household utensil…

A: In the step one, the ore is washed and mechanically processed to remove the impurities, and hence…

Q: What is added to molten iron to make steel? * O A small amounts of carbon B limestone and coke C…

A: Blast furnace is a large cylindrical object made up of the heated bricks which is used for the steel…

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…