>What compound has been historically used to leach gold from gold ores? Why is this process being discontinued?

Q: Without consulting any source other than a periodic table, what relative level of toughness would…

A: Ti -Titanium is the transition metal having atomic number 22.  Ti can loses its two electrons to…

Q: Qualitatively predict the trends in melting point, boiling point, and hardness of metals?

A: Melting Point : If we compare two closely associated elements (one metal and other non metal) then…

Q: Can all minerals of a metal act as ores? Justify.

A:

Q: When found in nature, which of the following metal ions would prefer to bind to sulfide rather than…

A: The general chemical formula of sulfide minerals is : AmSn. Where, A is metal  S is sulfur m,n are…

Q: The formation of specific minerals may often be described using HSAB Theory. Predict which of the…

A: The HSAB (Hard and Soft Acids and Bases) Theory groups ions into soft/hard acids or bases.…

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: These are minerals produced by the weathering action of water and heat on primary minerals. Often,…

A:

Q: Which of the following substances is added to the blast furnace (together with the iron ore and…

A: Iron contains impurities of silica(SiO2).

Q: What are soft and hard ferrites? (Inorganic Chemistry)

A: Soft ferrites =  Strong ferrites have low coercivity, which means that it can demagnetize easily.…

Q: When copper is purified using an electrochemical cell, which electrode has the pure copper and which…

A: The electrolytic cell process is used for the purification of a number of metals. The cathode is the…

Q: how is limestone used in Fe extraction?

A: Extraction:The way of separation of a desired substance mixed with other substances is known as…

Q: 40. The elements Si and P are added to steel to improve its properties in electric motors, and some…

A:

Q: Which process do you choose if the copper ore includes a remarkable amount of precious metals? Why?…

A: Copper has an important use in our daily lives for thousands of years. It is a metal found in its…

Q: Copper is produced from chalcopyrite concentrate from a mixed type ore containing 1.2% CuFeS2…

A: Copper is obtained fron the mixed ore chalcopyrite  and azurite.

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: The ore alvite often has a formula: (Hf, Th, Zr)SiO4.xH2 Suggest why Thorium would be an…

A: CONCEPTIsostructural: Isostructural crystals are those that have similar chemical structure , not…

Q: c) Quenching is employed to harden metallic materials. i. Explain the process of transforming PLAIN…

A: 1. Answer - Martensitic transformation - Martensitic transformation of shape memory alloys is a…

Q: (i) Indicate the principle behind the method used for the refining of Nickel. (ii) What is the role…

A: The process used for metal extraction in the pure form is named Metallurgy. Metals are extracted…

Q: State the principle on which each of the following processes operates: (i) Recovery of silver after…

A: To eliminate pollutants from the metals the way toward refining is finished. The extensively…

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: (i) Name the method used for the refining of titanium. (ii) What is the role of Zn in the extraction…

A: i.  Van Arkel method is the method used for the refining of titanium.

Q: What process is used to separate silver from its ores? O Hydrometallurgy Downs cell O Haber- Bosch…

A: Answer: Downs cell process is used for the production of Sodium metal. Haber-Bosch process is used…

Q: To make Au stronger and harder, it is often alloyed with other metals, such as Cu and Ag. Consider…

A: Size of Cu (128 pm) is smaller than Ag(144 pm). This size difference  makes Au/Cu alloy is harder…

Q: Which among these metals does not react with the environment? a. Au b. Mg c. Zn d. Fe

A:

Q: Question 6 Which of these is required to manufacture cement? a basic oxygen furnace a blast furnace…

A: Option 4 Kiln should be the correct answer.

Q: (i) Indicate the principle behind the method used for the refining of zinc.(ii) What is the role of…

A: The process of extraction of metals ( in pure form) from minerals is termed metallurgy. Minerals may…

Q: Type of Steel % Carbon Characteristics Uses Low-carbon steel < 0.2 % Malleable and ductile Chains…

A: The size of iron atoms is larger than the carbon atoms.

Q: what is lanthanide contraction?

A: The elements having atomic number 57 that corresponds to lanthanum to atomic number 71 that…

Q: The earthy impurities associated with mineral used in metallurgy are called(a) Slag(b) Flux(c)…

A: Gangue is the earthly impirity associated with minerals.

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: Calculate the mole percent and mass percent of Ti in the minerals rutile and ilmenite.&lt;

A:

Q: What is the basic principle of zone refining of metals?

A: In nature,metals are not found in pure form . They exist in the form of compounds called ores.Metals…

Q: Which metals are found in Monel steel?

A: Monel steel is an alloy. This alloy is mainly composed of nickel (Ni) and copper (Cu) which is 72%…

Q: (a) Which of the following ores can be concentrated by froth floatation method and why?Fe2O3, ZnS,…

A: When hydrophobic materials are separated from hydrophilic materials through a selective process then…

Q: why Si-Al-rich minerals are found nearer or at the surface while Fe-Mg-rich minerals are not

A: Si - Al - rich minerals are minerals that contains silicon and aluminium, whereas Fe-Mg- rich…