Observe the physical properties of the metals. Examine each for its state, color, luster and  hardness. Try to dissolve each in 5 test tubes containing 10 ml of water. Record the solubility  and reactions observed. Metal  State  Color  Luster  Hardness  Activity in   Water Na           Mg           Zn           Fe           Cu

Q: A sample of steel weighing 0.1798 g was dissolved and the manganese present was converted to MnO4–…

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Q: >List four metals that occur as elements in their natural state.

A: Native element minerals occur in nature in uncombined form and they have a distinct mineral…

Q: Which of the following casting technique is used for a metallic product that requires high…

A: Die - casting, investment casting, plaster casting, and sand casting, each provide their own unique…

Q: diffrentiate between cast iron and pig iron.

A: Extraction is the process in which a metal is extracted from its ore. Cast iron and pig iron are…

Q: A type of cast iron containing 3.1-4 wt% C and 1.7-3 wt% Si. *   a. Compact graphite   b. Malleable…

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Q: 17- -------- is added to dental amalgam alloy powder to supress oxidation d) Mercury c) Cr b) Zn O…

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Q: In gravimetric analysis, long digestion times allow for the formation of larger crystals remove…

A: Answer - The correct option is - (c)  Gravimetric analysis - Gravimetric analysis is a class of lab…

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: lon glve - produce an alloy phase consisting of Fe,C and Mn,C only. An amount of Cao hich is equal…

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Q: WIte A if the statement is correct, B if the statement is wrong. 1. Redox is a process in which a…

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

Q: 2. This steel is used in railway wheels and tracks, gears, and crankshafts. * O High carbon steel O…

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Q: What is the most economical fabrication technique? forging casting 3D-printing powder metallurgy

A: A multiple choice question about fabrication techniques, which is to be accomplished.

Q: sources of error of determination of iron in iron ore

A: Impurities in the iron from the Blast Furnace include carbon, sulphur, phosphorus and silicon. These…

Q: Why is there a need for 2 indicators in the analysis of mixed alkali? How do the two indicators help…

A: For a mixed alkali ( two alkalis having different pH range ) we use 2 indicators.

Q: TABLE 22.2 General Characteristics of Cutting-tool Materials (These Materials Have a Wide Range of…

A: The given table shows the trend observed in the properties of High-speed steels, cast-cobalt alloys,…

Q: Which of the following salts does NOT cause permanent hardness? A FeCl, B CaCl, © Ca(HCO,), (НСО ,),…

A: The temporary hardness is to the presence of carbonates and bicarbonates of calcium and magnesium in…

Q: how many iron atoms are in a mold of this alloy

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Q: sample of steel weighing 0.1708 g was dissolved and the manganese present was converted to MnO4–…

A: Mass of steel sample = 0.1708 g  Mn .....> MnO4- (Converted from steel)  Total volume of MnO4-…

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: was dissolved and the manganese present was converted to MnO4– (aq). Water was then added to give a…

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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: How can evacuated the hot gases formed by reactions of the molten metal in die casting?

A: When metal parts of certain geometry are to be produced at a faster rate, die casting process is…

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: Compared to pure metals, alloys are ...

A: ALLOY IS A MIXTURE OF TWO OR MORE ELEMENTS WITH CERTAIN  FIXED COMPOSITIONS MAJOR COMPONENT IS…

Q: What is chrome plating or electroplating? Briefly explain how this process works.

A: The chrome plating can provide corrosion resistance and helps in easing the cleaning procedures. It…

Q: Which of the following salts does NOT cause permanent hardness? A MGSO, B CaCl, B Ca (HCO ,) , D…

A: Water have two types of hardness 1. Temporary hardness 2 Permanent Hardness

Q: How much heat is released or absorbed in the reaction of 10.0 grams of SiO2 (quartz) with excess…

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Q: Identify the phase of the copper product after each reaction in the copper cycle. The heating of…

A: The phase of the formed copper product in the given four reactions are shown as follows:

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: ) Metal Plating is a common process. What is it? How is it done? Give a basic description of the…

A: Solution :     Metal plating is a process in which a thin layer of one metal coats the other…

Q: use electrical wire and in making tool box become suitable for its application

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Q: Ni content of the steel can be determined by the precipitation gravimetric analysis. For this…

A: The complex of Ni forming is Ni(DMG)2

Q: type of cast iron containing 3-4 wt% C and 1-3 wt% Si. a. Compact graphite   b. Malleable cast iron…

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Q: A newly discovered iron ore was weighted (5.408 g) and worked up to produced 0.3785 g of ignited…

A: 1.We are given iron weighted =5.408 gm Fe2O3 produced=0.3785 gm molar mass ofFe2O3 =160 gm/mol

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: Research about any of the following alloys and give their properties and composition. Choose at…

A: Alloys are made up of composition of metal with many other elements which may be some other metal or…

Q: *Research and discuss what is  Gadolinium Terbium *What are the most commonly mined minerals…

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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: Write a report on the element vanadium (v), where the report includes the properties and…

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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: This method requires acidic conditions to prevent iron from precipitating out as ferric hydroxide…

A: answer = Volhard method use to prevent iron from precipitating out as ferric hydroxide

Q: Explain about passivation in metals

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Q: Which one of the following is a major mineral element? Select one: Selenium Magnesium Cobalt Zinc

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