The document is a student's project report on analyzing alloys. It thanks various teachers and classmates for their support and guidance. It provides background on alloys such as brass, bronze, and amalgam. It describes the process of preparing alloys and qualitatively analyzing samples of brass and bronze. The objectives are to identify the metals in samples of brass and bronze using chemical tests and reagents. Qualitative analysis identifies copper and zinc in brass and copper and tin in bronze.
Chemistry project-study of constituents of an alloy himanshu rawat
This document describes a chemistry project to analyze the constituents of two alloys - brass and bronze. The project aims to increase understanding of alloy analysis through hands-on experience. Specific objectives are to analyze the constituents of brass, which contains copper and zinc, and bronze, which contains copper and tin. The document outlines the required materials, relevant theory, procedure and observations for testing samples of each alloy to identify the present metals through formation of characteristic precipitates and color changes.
These are the class 12 practicals held in cbse schools and it contains all the inorganic and organic salt tests in a simplified way and all the other experiments
chemistry project on constituents of alloysMILANSOOD1
This document is a student's chemistry project on the study of alloy constituents. It consists of an introduction to alloys, examples of common alloys like brass and bronze, how alloys are prepared and analyzed. It also describes two experiments - qualitative analysis of a brass sample and qualitative analysis of a bronze sample. Both samples were found to contain their main constituents of copper and zinc for brass, and copper and tin for bronze. The project concludes with some uses of alloys.
The document summarizes the production of chlorine and sodium hydroxide (caustic soda) via three main electrolytic processes: diaphragm, mercury, and membrane. It describes the raw materials, process, advantages/disadvantages, and engineering challenges of each. The main methods are electrolysis of brine solutions to produce chlorine gas and caustic soda. Membrane cells are most modern and efficient but mercury and diaphragm plants are being converted due to regulations and costs. Engineering issues include cell design selection, corrosion protection, and economics.
Sulphuric acid is a highly corrosive and strong mineral acid that is colorless and soluble in water. It is manufactured through the contact process, which involves combining sulfur dioxide with oxygen in the presence of a vanadium catalyst to form sulfur trioxide, and then combining the sulfur trioxide with concentrated sulfuric acid to form oleum. Sulfuric acid is considered the "king of acids" due to its widespread industrial use in manufacturing fertilizers, detergents, chemicals, and other products. Proper protective equipment and safety procedures must be followed when handling sulfuric acid due to its corrosive and oxidizing properties.
Sources of Water, Hardness of Water, Determination of Hardness of Water by EDTA method, Alkalinity of water, Scale and Sludge formation, Boiler Corrosion, Priming , Foaming, Caustic Embrittlement
Presentation slide on iodometric and iodimetric titration for the student seeking a quality slide on the subject. I added the following topics to this slide:
1.CONTENT
2.Titration
3.Types of Titration
4.Redox titration
5.Iodometry
6.Iodimetry
7.Difference between iodometric and iodimetric titration
8.Analytical applications on Iodometric and Iodimetric titration
9.Conclusion
Chemistry project-study of constituents of an alloy himanshu rawat
This document describes a chemistry project to analyze the constituents of two alloys - brass and bronze. The project aims to increase understanding of alloy analysis through hands-on experience. Specific objectives are to analyze the constituents of brass, which contains copper and zinc, and bronze, which contains copper and tin. The document outlines the required materials, relevant theory, procedure and observations for testing samples of each alloy to identify the present metals through formation of characteristic precipitates and color changes.
These are the class 12 practicals held in cbse schools and it contains all the inorganic and organic salt tests in a simplified way and all the other experiments
chemistry project on constituents of alloysMILANSOOD1
This document is a student's chemistry project on the study of alloy constituents. It consists of an introduction to alloys, examples of common alloys like brass and bronze, how alloys are prepared and analyzed. It also describes two experiments - qualitative analysis of a brass sample and qualitative analysis of a bronze sample. Both samples were found to contain their main constituents of copper and zinc for brass, and copper and tin for bronze. The project concludes with some uses of alloys.
The document summarizes the production of chlorine and sodium hydroxide (caustic soda) via three main electrolytic processes: diaphragm, mercury, and membrane. It describes the raw materials, process, advantages/disadvantages, and engineering challenges of each. The main methods are electrolysis of brine solutions to produce chlorine gas and caustic soda. Membrane cells are most modern and efficient but mercury and diaphragm plants are being converted due to regulations and costs. Engineering issues include cell design selection, corrosion protection, and economics.
Sulphuric acid is a highly corrosive and strong mineral acid that is colorless and soluble in water. It is manufactured through the contact process, which involves combining sulfur dioxide with oxygen in the presence of a vanadium catalyst to form sulfur trioxide, and then combining the sulfur trioxide with concentrated sulfuric acid to form oleum. Sulfuric acid is considered the "king of acids" due to its widespread industrial use in manufacturing fertilizers, detergents, chemicals, and other products. Proper protective equipment and safety procedures must be followed when handling sulfuric acid due to its corrosive and oxidizing properties.
Sources of Water, Hardness of Water, Determination of Hardness of Water by EDTA method, Alkalinity of water, Scale and Sludge formation, Boiler Corrosion, Priming , Foaming, Caustic Embrittlement
Presentation slide on iodometric and iodimetric titration for the student seeking a quality slide on the subject. I added the following topics to this slide:
1.CONTENT
2.Titration
3.Types of Titration
4.Redox titration
5.Iodometry
6.Iodimetry
7.Difference between iodometric and iodimetric titration
8.Analytical applications on Iodometric and Iodimetric titration
9.Conclusion
A well searched & productive study base ppt related to soft and hard water which well describe the types of water and which type of water should consume?
Chemistry Investigatory project on "Study of constituents of an alloy"Swaroop Somanna
This is a CBSE class 12 Chemistry Investigatory Project on the topic "Study of constituents of an alloy".
THIS PROJECT HAS ALREADY BEEN SUBMITTED TO THE RESPECTIVE SCHOOL BY THE AUTHOR AND MUST NOT BE COPIED.
This project must only be used for idea gaining and reference purpose.
- The document is a chemistry project submitted by a student named Tarun Malhotra analyzing samples of brass and bronze through qualitative analysis.
- It thanks various teachers and administrators for their support and contains an index of sections including introductions to alloys, common alloys like brass and bronze, how to prepare alloys, and descriptions of the qualitative analysis experiments performed on samples of brass and bronze.
- The experiments aimed to identify the metal constituents in the samples through chemical tests to detect copper and zinc in brass and tests for copper and tin in bronze.
Abhay Pandey completed a chemistry project on the elevation of boiling point. They thank various people who provided guidance and support including their chemistry teacher Mrs., school principal Mr., parents, friends, and classmates. The document discusses that the boiling point of a solution is higher than that of the pure solvent alone due to the lower vapor pressure of the solution. It provides an example calculation of how to determine the boiling point of a solution using the molality of the solute and boiling point elevation constant.
Estimation of fe(ii) ions by titrating against k2 cr2o7 using internal indicatorMithil Fal Desai
This document provides instructions for estimating Fe(II) ions in a solution by titrating against a standard solution of potassium dichromate (K2Cr2O7) using diphenylamine as an internal indicator. The procedure involves preparing standard solutions of K2Cr2O7, sulfuric acid, and a Mohr's salt solution containing the unknown amount of Fe(II). The Mohr's salt solution is then titrated against the K2Cr2O7 solution while adding diphenylamine, which causes a color change from green to violet-blue at the endpoint of the reaction. The amount of Fe(II) in the original Mohr's salt solution can then be calculated from the titration results.
The document discusses the production of caustic soda and chlorine through the electrolysis of salt water. There are three main electrolytic cell types used: mercury cell, diaphragm cell, and membrane cell. In the electrolysis process, salt water is purified and passed through the cells, where an electric current decomposes the brine into chlorine gas at the anode and sodium at the cathode. The sodium and chlorine then undergo further reactions to produce caustic soda and chlorine. The membrane cell process produces high quality caustic soda without contamination from salt, and operates at low voltage and energy efficiency.
The document discusses the history and naming of several important organic reactions. It describes how reactions are often named after their original discoverers, like the Mizoroki-Heck reaction which is named after both Mizoroki who discovered it and Heck who improved and popularized it. However, the contributions of early discoverers can sometimes be overlooked over time if a later scientist further develops a reaction. The document also discusses several other named reactions and their discoverers, like the Ugi reaction discovered by Ivar Ugi and the Mitsunobu reaction discovered by Oyo Mitsunobu.
The document contains a chemistry quiz with questions about various chemical elements, compounds, and materials - including the measure of radioactivity (curie), the gas inside light bulbs (argon), the universal solvent (water), the liquid metal at room temperature (mercury), and the densest known gas (radon). It asks about the constituents of natural gas and petroleum, metals, acids, alloys, and other substances commonly found in batteries, antiseptics, poisons, and drinks.
The document describes experiments performed to identify an unknown inorganic salt. Key observations indicated the salt was blue in color and soluble in water. Tests confirmed the presence of copper cations and sulfate anions. Specifically, the salt produced a bluish-green flame, turned white when heated, and gave a white precipitate with barium chloride and dilute hydrochloric acid, identifying it as copper sulfate.
1. Diazotization is a reaction where an aryl amine like aniline reacts with nitrous acid to form an unstable diazonium ion intermediate.
2. Coupling reactions involve this diazonium ion reacting with compounds containing activating groups like phenol or aniline to form an azo product by joining the two aryl groups.
3. The coupling reaction is an electrophilic aromatic substitution that proceeds through a two-step mechanism where the diazonium ion attacks the aromatic ring in the first slow step.
The document discusses several limit tests used to check for impurities in samples according to the Indian Pharmacopoeia, including tests for chloride, sulphate, iron, arsenic, heavy metals, and lead. The limit tests involve comparing the visible reaction of the sample to a standard solution to determine if the level of impurity exceeds the limit. The reactions form precipitates or complexes that can be observed and compared between the sample and standard.
chemistry investigatory-Amount of caffeine present in tea samplesRohith Ak
This document discusses caffeine content in tea. It begins by providing background on tea and caffeine. Tea contains caffeine, a stimulant, and its presence and concentration influence the taste. The document then describes the chemical properties of caffeine and the procedure used to extract and analyze caffeine from different tea brands. The results showed that teas with higher caffeine content had a stronger taste and more stimulating effect.
The document describes the procedure for determining the iodine number of an oil. The iodine number is a measure of the degree of unsaturation in an oil or fat, and is defined as the grams of iodine absorbed by 100 grams of oil. The procedure involves titrating the oil against a standardized sodium thiosulfate solution after treatment with iodine, and calculating the iodine number based on the amount of sodium thiosulfate consumed. Reagents, equipment, steps for standardizing the sodium thiosulfate and performing the titration, and calculations are provided.
Amit Kumar, a class 12 student, thanks the principal, chemistry teacher, parents, and classmates for their support and guidance in completing his chemistry project on the analysis of alloys. The project involved qualitative analysis experiments to identify the components of brass and bronze samples. The brass sample was found to contain copper and zinc as the main constituents, while the bronze sample contained copper and tin as expected.
Chemistry project on study of constituents of alloyspranav1645
- The document is a chemistry project report submitted by Pranav Parashar analyzing the constituents of alloys.
- It includes an acknowledgement, index of sections, and sections on common alloys like brass and bronze, preparation of alloys, analysis of an alloy, two experiments conducted, and uses of alloys.
- The experiments involve qualitative analysis of samples of brass and bronze to identify the main metal constituents of copper and zinc in brass, and copper and tin in bronze.
A well searched & productive study base ppt related to soft and hard water which well describe the types of water and which type of water should consume?
Chemistry Investigatory project on "Study of constituents of an alloy"Swaroop Somanna
This is a CBSE class 12 Chemistry Investigatory Project on the topic "Study of constituents of an alloy".
THIS PROJECT HAS ALREADY BEEN SUBMITTED TO THE RESPECTIVE SCHOOL BY THE AUTHOR AND MUST NOT BE COPIED.
This project must only be used for idea gaining and reference purpose.
- The document is a chemistry project submitted by a student named Tarun Malhotra analyzing samples of brass and bronze through qualitative analysis.
- It thanks various teachers and administrators for their support and contains an index of sections including introductions to alloys, common alloys like brass and bronze, how to prepare alloys, and descriptions of the qualitative analysis experiments performed on samples of brass and bronze.
- The experiments aimed to identify the metal constituents in the samples through chemical tests to detect copper and zinc in brass and tests for copper and tin in bronze.
Abhay Pandey completed a chemistry project on the elevation of boiling point. They thank various people who provided guidance and support including their chemistry teacher Mrs., school principal Mr., parents, friends, and classmates. The document discusses that the boiling point of a solution is higher than that of the pure solvent alone due to the lower vapor pressure of the solution. It provides an example calculation of how to determine the boiling point of a solution using the molality of the solute and boiling point elevation constant.
Estimation of fe(ii) ions by titrating against k2 cr2o7 using internal indicatorMithil Fal Desai
This document provides instructions for estimating Fe(II) ions in a solution by titrating against a standard solution of potassium dichromate (K2Cr2O7) using diphenylamine as an internal indicator. The procedure involves preparing standard solutions of K2Cr2O7, sulfuric acid, and a Mohr's salt solution containing the unknown amount of Fe(II). The Mohr's salt solution is then titrated against the K2Cr2O7 solution while adding diphenylamine, which causes a color change from green to violet-blue at the endpoint of the reaction. The amount of Fe(II) in the original Mohr's salt solution can then be calculated from the titration results.
The document discusses the production of caustic soda and chlorine through the electrolysis of salt water. There are three main electrolytic cell types used: mercury cell, diaphragm cell, and membrane cell. In the electrolysis process, salt water is purified and passed through the cells, where an electric current decomposes the brine into chlorine gas at the anode and sodium at the cathode. The sodium and chlorine then undergo further reactions to produce caustic soda and chlorine. The membrane cell process produces high quality caustic soda without contamination from salt, and operates at low voltage and energy efficiency.
The document discusses the history and naming of several important organic reactions. It describes how reactions are often named after their original discoverers, like the Mizoroki-Heck reaction which is named after both Mizoroki who discovered it and Heck who improved and popularized it. However, the contributions of early discoverers can sometimes be overlooked over time if a later scientist further develops a reaction. The document also discusses several other named reactions and their discoverers, like the Ugi reaction discovered by Ivar Ugi and the Mitsunobu reaction discovered by Oyo Mitsunobu.
The document contains a chemistry quiz with questions about various chemical elements, compounds, and materials - including the measure of radioactivity (curie), the gas inside light bulbs (argon), the universal solvent (water), the liquid metal at room temperature (mercury), and the densest known gas (radon). It asks about the constituents of natural gas and petroleum, metals, acids, alloys, and other substances commonly found in batteries, antiseptics, poisons, and drinks.
The document describes experiments performed to identify an unknown inorganic salt. Key observations indicated the salt was blue in color and soluble in water. Tests confirmed the presence of copper cations and sulfate anions. Specifically, the salt produced a bluish-green flame, turned white when heated, and gave a white precipitate with barium chloride and dilute hydrochloric acid, identifying it as copper sulfate.
1. Diazotization is a reaction where an aryl amine like aniline reacts with nitrous acid to form an unstable diazonium ion intermediate.
2. Coupling reactions involve this diazonium ion reacting with compounds containing activating groups like phenol or aniline to form an azo product by joining the two aryl groups.
3. The coupling reaction is an electrophilic aromatic substitution that proceeds through a two-step mechanism where the diazonium ion attacks the aromatic ring in the first slow step.
The document discusses several limit tests used to check for impurities in samples according to the Indian Pharmacopoeia, including tests for chloride, sulphate, iron, arsenic, heavy metals, and lead. The limit tests involve comparing the visible reaction of the sample to a standard solution to determine if the level of impurity exceeds the limit. The reactions form precipitates or complexes that can be observed and compared between the sample and standard.
chemistry investigatory-Amount of caffeine present in tea samplesRohith Ak
This document discusses caffeine content in tea. It begins by providing background on tea and caffeine. Tea contains caffeine, a stimulant, and its presence and concentration influence the taste. The document then describes the chemical properties of caffeine and the procedure used to extract and analyze caffeine from different tea brands. The results showed that teas with higher caffeine content had a stronger taste and more stimulating effect.
The document describes the procedure for determining the iodine number of an oil. The iodine number is a measure of the degree of unsaturation in an oil or fat, and is defined as the grams of iodine absorbed by 100 grams of oil. The procedure involves titrating the oil against a standardized sodium thiosulfate solution after treatment with iodine, and calculating the iodine number based on the amount of sodium thiosulfate consumed. Reagents, equipment, steps for standardizing the sodium thiosulfate and performing the titration, and calculations are provided.
Amit Kumar, a class 12 student, thanks the principal, chemistry teacher, parents, and classmates for their support and guidance in completing his chemistry project on the analysis of alloys. The project involved qualitative analysis experiments to identify the components of brass and bronze samples. The brass sample was found to contain copper and zinc as the main constituents, while the bronze sample contained copper and tin as expected.
Chemistry project on study of constituents of alloyspranav1645
- The document is a chemistry project report submitted by Pranav Parashar analyzing the constituents of alloys.
- It includes an acknowledgement, index of sections, and sections on common alloys like brass and bronze, preparation of alloys, analysis of an alloy, two experiments conducted, and uses of alloys.
- The experiments involve qualitative analysis of samples of brass and bronze to identify the main metal constituents of copper and zinc in brass, and copper and tin in bronze.
The document is an acknowledgement and introduction to a student project on the study of alloy constituents. It acknowledges the student's guide and others who provided support and encouragement. It provides an introduction to what an alloy is comprised of and some common alloys like brass, bronze, and duralumin along with their typical compositions. It also outlines the objectives of the project to qualitatively analyze the metals present in a sample alloy through experimentation.
This document provides an acknowledgment and thanks to a chemistry teacher, Mr. Rakesh K., for his guidance and support in completing a school project. It expresses deep gratitude and obligation to the teacher for inspiring enthusiasm and instilling dynamism. The document then covers the topics of alloys, including common alloys like brass, bronze, and amalgam. It discusses the composition and properties of these alloys and includes examples like dental fillings and artisanal mining. An experiment section and bibliography are also included at the end.
This document summarizes several common metal alloys, including their typical compositions and common uses. It discusses amalgams, brass, bronze, pewter, and nickel silver. For each alloy, it provides the main metals used in the composition as well as some historical and current applications where the alloys are employed.
This document outlines the chemical and physical properties of tin, its alloys, and applications. It discusses how tin forms alloys with many metals like copper to create bronze, an important material in early civilization. It also summarizes tin-based solder alloys that are important in electronics, replacing lead-based solders. The document concludes that tin is a key element in bronze and that most tin today is used to produce solders for electronics applications.
Copper and its alloys are classified according to the Copper Development Association. Wrought alloys include unalloyed copper, brass, and bronze. Unalloyed copper includes electrolytic tough-pitch copper, oxygen-free copper, and phosphorus deoxidized copper. Brass is a copper-zinc alloy that may also contain tin, aluminum, or lead. Bronze is primarily a copper-tin alloy but may also contain aluminum, nickel, phosphorus, or other elements. Copper and its alloys have many applications due to their electrical and thermal conductivity, corrosion resistance, strength and other properties.
The document discusses non-ferrous alloys, beginning with an introduction on the limitations of ferrous alloys and advantages of using non-ferrous alloys. It then covers various non-ferrous metals and their alloys including copper and copper alloys like brass and bronze, aluminum and aluminum alloys, magnesium and magnesium alloys, and titanium and its alloys. For each metal/alloy, it describes common compositions, properties, and applications. It also discusses bearing materials and includes detailed information on composition and uses of various copper, aluminum, and magnesium alloys.
This document describes an experiment to determine the optimal zinc sample for plating copper to create brass alloy. The experiment tested zinc acetate, zinc sulfate, zinc dust, zinc strips, and a no zinc control. Copper strips were placed in heated mixtures of each zinc sample and then heated again to form brass. Zinc dust produced the highest brass yield, followed by zinc acetate, zinc sulfate, zinc strips, and no zinc control. Quantitative results showed zinc dust had the greatest average change in mass, indicating it plates the most zinc onto copper and produces the most brass. Therefore, zinc dust is the most effective zinc sample for industrial brass production.
The document discusses the properties, extraction, and uses of metals such as iron and aluminum. It describes how iron is extracted through blast furnaces and converted to steel. Key steps include concentrating the ore, reducing iron oxides with carbon, and removing impurities. Aluminum extraction involves concentrating bauxite through the Bayer process, then electrolysis of aluminum oxide in cryolite. The environmental impacts of mining, processing, and transporting metals are also covered.
This document discusses casting alloys used in dentistry. It begins with a brief history of casting alloys and their evolution since the 1900s. It then covers the key properties casting alloys must have including biocompatibility, corrosion resistance, hardness, castability and bonding to ceramics. The document classifies casting alloys and discusses commonly used types such as gold alloys, silver-palladium alloys, cobalt-chrome alloys and titanium alloys. It provides details on the composition and characteristics of different alloy groups.
Sheets Metal used in Manufacturing ProcessRishabh Singh
Presentaion is on how sheets metal are used in manufacturing process.
You get to know about how many types of steels are there and what are there types.
More than than it contains information about metals used in metallurgy.
The document describes an experiment studying the effect of metal coupling on corrosion rates in acidic and basic solutions. It finds that brass has the highest corrosion rate while aluminum has the lowest, and that corrosion rates generally decrease when metals are coupled compared to individually. The purpose is to better understand corrosion of common metals and alloys in order to reduce costs from replacement of corroded materials.
Copper manufacturing process
Content
What is copper
History of copper
General property of copper
Physical properties of copper
Manufacturing process of copper
Application of copper
This above all content are available in this presentation
Copper is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. It has two stable isotopes and exists in native and mineral forms, with the most important ores being sulfides, oxides, and carbonates. Copper is extracted from its ores through a series of chemical, physical, and electrochemical processes including crushing, roasting, smelting, and electrolysis. It has many useful properties and practical applications as a building material, electrical conductor, and in metal alloys like brass and bronze used for plumbing, wiring, cookware, and more. Copper consumption is highest in the building industry, electronics, transportation, and consumer products.
Chemistry investigatory project on Effect of Metal Coupling on CorrosionReshop Nanda
The document describes an experiment on the corrosion of different metals and metal alloys in acidic and basic solutions. Key findings include:
- Brass and iron corroded most in acid, while brass and zinc corroded most in base. Aluminum corroded least in both.
- Coupling metals affected corrosion rates, with iron-aluminum coupling corroding most in acid and brass-aluminum in base.
- Corrosion is explained by the electrochemical process and metal reactivity based on their reduction potentials.
- Common corrosion protection methods are also outlined.
The LD process, also called the basic oxygen process, is a steelmaking method where scrap metal and iron ore are refined in an LD vessel. Key steps include charging materials, blowing oxygen through a lance at high pressure and temperature to burn off impurities, sampling the molten steel, and tapping purified steel into a ladle. The process is much faster than open hearth and produces steel with low sulfur and phosphorus using ordinary raw materials without external heat or fuel. However, it is limited in scrap usage and can result in steel wastage from splashing.
This document provides information on non-ferrous metals and alloys, specifically focusing on copper and its alloys. It discusses the classification, properties, and applications of copper, brass, bronze, aluminium bronze, tin bronze, and phosphor bronze alloys. Key points include the composition and phases of various brass alloys like cartridge brass, naval brass, and leaded brass and how alloying elements affect their properties. It also compares the properties of ferrous and non-ferrous metals.
This slide will cover the following points: General properties of copper, density,copper alloy, Specific heat,Thermal conductivity,Electrical conductivity and crystal structure of copper. Email: khairul.me08@gmail.com
This presentation was provided by Steph Pollock of The American Psychological Association’s Journals Program, and Damita Snow, of The American Society of Civil Engineers (ASCE), for the initial session of NISO's 2024 Training Series "DEIA in the Scholarly Landscape." Session One: 'Setting Expectations: a DEIA Primer,' was held June 6, 2024.
Introduction to AI for Nonprofits with Tapp NetworkTechSoup
Dive into the world of AI! Experts Jon Hill and Tareq Monaur will guide you through AI's role in enhancing nonprofit websites and basic marketing strategies, making it easy to understand and apply.
A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
This slide is special for master students (MIBS & MIFB) in UUM. Also useful for readers who are interested in the topic of contemporary Islamic banking.
A review of the growth of the Israel Genealogy Research Association Database Collection for the last 12 months. Our collection is now passed the 3 million mark and still growing. See which archives have contributed the most. See the different types of records we have, and which years have had records added. You can also see what we have for the future.
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...Dr. Vinod Kumar Kanvaria
Exploiting Artificial Intelligence for Empowering Researchers and Faculty,
International FDP on Fundamentals of Research in Social Sciences
at Integral University, Lucknow, 06.06.2024
By Dr. Vinod Kumar Kanvaria
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...PECB
Denis is a dynamic and results-driven Chief Information Officer (CIO) with a distinguished career spanning information systems analysis and technical project management. With a proven track record of spearheading the design and delivery of cutting-edge Information Management solutions, he has consistently elevated business operations, streamlined reporting functions, and maximized process efficiency.
Certified as an ISO/IEC 27001: Information Security Management Systems (ISMS) Lead Implementer, Data Protection Officer, and Cyber Risks Analyst, Denis brings a heightened focus on data security, privacy, and cyber resilience to every endeavor.
His expertise extends across a diverse spectrum of reporting, database, and web development applications, underpinned by an exceptional grasp of data storage and virtualization technologies. His proficiency in application testing, database administration, and data cleansing ensures seamless execution of complex projects.
What sets Denis apart is his comprehensive understanding of Business and Systems Analysis technologies, honed through involvement in all phases of the Software Development Lifecycle (SDLC). From meticulous requirements gathering to precise analysis, innovative design, rigorous development, thorough testing, and successful implementation, he has consistently delivered exceptional results.
Throughout his career, he has taken on multifaceted roles, from leading technical project management teams to owning solutions that drive operational excellence. His conscientious and proactive approach is unwavering, whether he is working independently or collaboratively within a team. His ability to connect with colleagues on a personal level underscores his commitment to fostering a harmonious and productive workplace environment.
Date: May 29, 2024
Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
-------------------------------------------------------------------------------
Find out more about ISO training and certification services
Training: ISO/IEC 27001 Information Security Management System - EN | PECB
ISO/IEC 42001 Artificial Intelligence Management System - EN | PECB
General Data Protection Regulation (GDPR) - Training Courses - EN | PECB
Webinars: https://pecb.com/webinars
Article: https://pecb.com/article
-------------------------------------------------------------------------------
For more information about PECB:
Website: https://pecb.com/
LinkedIn: https://www.linkedin.com/company/pecb/
Facebook: https://www.facebook.com/PECBInternational/
Slideshare: http://www.slideshare.net/PECBCERTIFICATION
Main Java[All of the Base Concepts}.docxadhitya5119
This is part 1 of my Java Learning Journey. This Contains Custom methods, classes, constructors, packages, multithreading , try- catch block, finally block and more.
How to Fix the Import Error in the Odoo 17Celine George
An import error occurs when a program fails to import a module or library, disrupting its execution. In languages like Python, this issue arises when the specified module cannot be found or accessed, hindering the program's functionality. Resolving import errors is crucial for maintaining smooth software operation and uninterrupted development processes.
3. I wish to express my deep
gratitude and sincere thanks to the Principal, Dr
M.Barsaley, Greenfields Public school for her
encouragement and for all the facilities that she
provided for this project work. I sincerely
appreciate this magnanimity by taking me into her
fold for which I shall remain indebted to her. I
extend my hearty thanks to Mrs.Alka Tyagi,
Chemistry teacher ,who guided me to the
successful completion of this project. I take this
opportunity to express my deep sense of gratitude
for her invaluable guidance, constant
encouragement , immense motivation , which has
sustained my efforts at all the stages of this
project work…
I can’t forgot to offer my sincere thanks to parents
and also to my classmates who helprd me to carry
out this project work successful and for their
valuable advice and support , which I received
from them time to time….
4. Guided By :-
Class :- XII – C3
Year :- 2011- 2012
Roll No :- ________________
School :- Greenfields Public School
Certified to be the bona fide work done by-
Master ______________ of class XII-C3 in the
Chemistry Lab during the year 2011-2012.
Date :-________
Submitted for Central Board of Secondary
Education.
Examination held in Chemistry lab at Greenfields
Public School.
EXAMINER
Date :-_________
5. 1-- Introduction
2-- Some Common Alloys
3-- Preparation of alloys
4-- Analysis of an alloy
5-- Experiment 1
to analyze a sample of brass
qualitative
6-- Experiment 2
to analyze a sample of bronze
qualitatively
7-- Uses of Alloy
8-- Bibliography……
6. An Alloy is a homogenous mixture of two or more metals or a non-metal.
An alloy of mercury with another metal is called amalgam.
Alloys are usually harder than their components but very often less ductile and less
malleable. Thus the hardness of gold is increased by addition of copper to it. The
melting point of an alloy is always lower than the melting points of the constituent
metals. Other properties such as reactivity towards atmospheric oxygen and moisture,
mechanical strength, ductility, colour etc. also under goes a change when an alloy is
made from its constituents (metals). This change of properties is very useful and makes
an alloy beneficial.
Some of the alloys along with their composition is given below.
1. Brass :-
It consists copper-50-90%.
Zinc. : 20-40%
and small amounts of tin, lead and iron.
2. Bronze : It consists copper 60-90%.
3. Tin : 5-35%
and also contains small amounts of lead, iron and zinc.
Duralumin : It consists A1 : 95%, Cu = 4%
Mn = 0.5%, Mg = 0.5%
4. Gun Metal : It consists copper 85 - 90%
5. Zinc. : 1-3%
6. Tin : 8-12%
The composition of alloys may differ slightly depending upon the quality of the
alloy though the main components remain the same.
7. Amalgam
Any alloy of mercury is called an amalgam. Most metals are
soluble in mercury, but some (such as iron)are not. Amalgams are
commonly used in dental fillings because they have been relatively
cheap, easy to use, and durable. In addition, until recently, they
have been regarded as safe. They are made by mixing mercury
with silver ,copper ,tin , and other metals. The mercury content of
dental fillings has recently stirred controversy, based on the
potentially harmful effects of mercury.
Mercury amalgams have also been used in the process of mining
gold and silver, because of the ease with which mercury
amalgamates with them. In addition , thallium amalgam is used as the liquid
material in thermometers, because it freezes at -58°C,whereas pure mercury
freezes at -38°C.
Brass
A decorative brass paperweight (left), along with zinc and copper
samples.
Brass is the term used for alloys of copper and zinc in a solid
solution. It has a yellow color, somewhat similar to gold. It was
produced in prehistoric times, long before zinc was discovered, by
melting copper with calamine, a zinc ore.
The amount of zinc in brass varies from 5 to 45 percent, creating
a range of brasses, each with unique properties. By comparison,
bronze is principally an alloy of copper and tin.
8. Despite this distinction, some types of brasses are called bronzes.
Brass is relatively resistant to tarnishing and is often used for
decorative purposes. Its malleability and acoustic properties have
made it the metal of choice for musical instruments such as the
trombone, tuba, trumpet, and euphonium. Although saxophones
And harmonicas are made out of brass, the saxophone is a
woodwind instrument, and the harmonica, a free reed aero phone.
In organ pipes designed as "reed" pipes, brass strips are used as
the "reed."
Aluminum makes brass stronger and more corrosion-resistant. It
forms a transparent, self-healing, protective layer of aluminum
oxide (Al2O3) on the surface. Tin has a similar effect and finds its
use especially in seawater applications (naval brasses).
Combinations of iron, aluminum, silicon, and manganese make brass
resistant to wear and tear.
Bronze
Bronze refers to a broad range of copper alloys, usually with tin
as the main additive, but sometimes with other element s such as
phosphorus,manganese,aluminum, or silicon. Typically, bronze is
about 60 percent copper and 40 percent tin. The use of bronze was particularly
significant for early civilizations, leading to the name "Bronze Age." Tools, weapons,
armor, and building materials such as decorative tiles were made
of bronze, as they were found to be harder and more durable
than their stone and copper predecessors.
9. In early use, the natural impurity arsenic sometimes created a superior natural
alloy, called "arsenical bronze."
Though not as strong as steel, bronze is superior to iron in nearly
every application. Bronze develops a patina (a green coating on
the exposed surface), but it does not oxidize beyond the surface.
It is considerably less brittle than iron and has a lower casting
temperature. Several bronze alloys resist corrosion (especially by
seawater) and metal fatigue better than steel; they also conduct
Heat and electricity better than most steels.
Bronze has myriad uses in industry. It is widely used today for
springs, bearings, bushings, and similar fittings, and is particularly
common in the bearings of small electric motors. It is also widely
used for cast metal sculpture and is the most popular metal for
top-quality bells and cymbals.
Commercial bronze, otherwise known as brass, is 90 percent
copper and 10 percent zinc. It contains no tin
10. Preparation of Alloys
Alloys are prepared from the techniques of fusion, compression or simultaneous
electro - deposition. Generally the components are mixed together in proper
properties in a fuse clay crucible, melted and stirred with a piece of charcoal to
avoid oxidation. The molten mixture is now allowed to cool. When an alloy is
obtained e.g. brass is prepared by above melted.
Analysis of an alloy
The complete analysis of an alloy involves two steps.
1. Qualitative Analysis :
This involves identification of the components of the alloys.
2. Quantitative Analysis :
This involves determination of the components of the alloy. It involves the
separation of the components from the alloy quantitatively followed by
determination of percentage of each component volumetrically or gravimetrically.
In this project we will carry out qualitative analysis only.
Objectives of Project :
In this project, our aim is to know the various metals present in the given sample of
alloy.
11.
12. Requirements : China dish, test-tube funnel, filter paper and common laboratory reagents.
Theory :
Brass is an alloy of copper and zinc. with the following.
Composition :
Cu = 60-90% and Zn. = 10-40%.
Thus Cu and Zn. form the main constituents of brass. Both these metals dissolved in 50% of nitric
acid due to formation of nitrates which are soluble.
3 Cu + 8HNO3 (Dil) 3 Cu (NO3)2 + 2NO + 4H2O
or
Cu + 8H+ + 2NO3– 3 Cu+2 + 2NO + 4H2O
4Zn + 10HNO3 (Dil) 4 Zn (NO2)2 + N2O + 5H2O
4Zn + 2NO3– + 10H+ 4 Zn+2 + N2O + 5H2O
The solution is boiled to expel the oxides of nitrogen and the resulting solution is tested for Cu2+
and Zn+2 ions.
Procedure :
1. Place a small piece of brass in a china dish and heat this with minimum quantity
of 50% HNO3 so as to dissolve the piece completely.
2. Continue heating the solution till a dry solid residue is obtained.
3. Dissolve the solid residue in dil. HCl and filter. Add distilled water to the filtrate.
4. Pass H2S gas through the filtrate. A black precipitate of copper sulphide is
obtained. Separate the black ppt. and keep the filtrate for the test of Zn+2 ions
Dissolve black ppt. by heating them with 50% HNO3. To this solution add
ammonium hydroxide solution. Appearance of deep blue coloration in the solution
shows the presence of copper ions in the solution.
5. To test Zn+2 ions, boil the filtrate to remove H2S gas, then add solid NH4Cl to this
and heat to dissolve NH4Cl. Add excess of NH4OH so that a solution is ammoniacal.
Now pass H2S gas through this ammoniacal solution. Dirty white or grey
precipitation indicate zinc. Separate the precipitates and dissolve it in minimum
amount of dil. HCl. Boil to expel H2S gas and add potassium Ferro cyanide solution,
white or bluish white ppt. confirm Zn+2 ions in the solution.
Result :
The given sample of brass contains copper and zinc. metals as the main
constituents.
13.
14. Requirements : China dish, test-tube funnel, filter paper and common laboratory
reagents.
Theory :
Bronze is an alloy of copper and tin with the following.
Composition :
Cu = 88-96% and Sn. = 4-12%.
Thus copper and zinc. form the main constituents of bronze. Both these metals
dissolved in nitric acid.
3 Cu + 8H+ + 2NO3– 3 Cu2+ + 2NO + 4H2O
4Sn + NO3– + 10 H+ 4 Sn+2 + NH4+ + 3H2O
(Cold and Dil. Acid)
Sn + 4NO3– + 4H+ H2Sn O3 + 2NO2 + H2O
(Conc. acid) (Metastannic Acid)
Excess of nitric acid is removed by heating the solution. The resulting solution now
would contain Cu+2 ions and metastannic acid. This solution is acidified with dil. HCl
and H2S gas is passed when the sulphides of copper and tin are formed.
Cu+2 + S2- CuS (Black ppt.)
H2SnO3 + 2H2S SnS2 (Black ppt.) + 3H2O
The sulphides are separated by boiling the ppt. with yellow ammonium sulphide
when SnS2goes into solution as thiostannate where as CuS is not affected.
SnS2 + (NH4)2S (NH4)2 SnS2 (Soluble)
Ammonium thiostannate.
CuS + (NH4)2S CuS (Unaffected)
Black ppt.
The soluble black ppt. is tested for Cu+2 ions and the solution is tested for Sn2+ ions
as in elementary qualitative analysis.
15. Procedure :
1. Take about 1g. of small pieces of bronze in a china dish and add to it 5-10 ml. of
dil. HNO3.
2. Heat the contents slowly to dissolve copper and tin completely and then boil the
contents to a paste to remove excess of HNO3. All this is carried out in cup board.
3. Dissolve this dry mass in distilled water containing HCl (1:1) to get a clear
solution.
4. Transfer the solution in a test tube and pass H2S in excess i.e. till the precipitation
is complete. Filter and reject the filtrate.
5. Take the black ppt. in a test tube and add to it 2-3 ml. of yellow ammonium
sulphide and heat. Filter the contents. Black residue is tested for Cu+2 ions and
filtrate is tested for Sn+2ions.
6. Analysis of black residue :
Transfer a little of the black ppt. into a test tube. Add to it 2-3 ml. of 50%. HNO3 and
boil the contents of the tube. A light blue or green sol. indicates the presence of
Cu+2. Divide this sol. into two parts.
(a) To one part add excess of NH4OH a deep blue coloration confirms the presence
of Cu+2 ions.
(b) Acidify the second part with acetic acid and add K4 [Fe (CN)6] i.e. potassium
ferrocyanide solution. A reddish brown ppt. confirms the presence of Cu+2 ions.
7. Analysis of filtrate :
Boil the filtrate with 1 ml. of dil. HCl. A yellow ppt. is obtained. Dissolve in 1 ml.
conc. HCl. To this solution add 0.5 g. of zinc. dust and boil it for 2-3 minutes. Filter
and to filtrate add 1-2 ml. of mercuric chloride solution. A white ppt. turning grey on
standing confirms the presence of Sn+4 ions.
Result :
The given sample of bronze contains - Cu and Sn as the main constituents.
16. i) To modify chemical reactivity :-
When sodium is used as reducing agent it is too reactive to be used but its allay with
mercury, called sodium amalgam can be safely used as reducing agent.
ii) To increase hardness :-
Hardness of gold is increased by adding copper to it. Also zinc is added to copper to
make copper hard in form of brass.
iii) To increase tensile strength :-
Nickeloy, an alloy of Nickel (1%), Copper (4%) and aluminium (95%) has high tensile
strength.
iv) To lower the melting point :-
Solder metal which is an alloy of Sn(30%) and Pb(70%) has very less meting point as
compared to melting points of Sn and Pb.
v) To modify the colour :-
Aluminium bronze an alloy of Cu and Al has beautiful golden colour.
vi) To resist corrosion:-
Iron gets rusted and corroded. Its corrosion takes place with time but stainless steel,
an alloy of iron and carbon get not rusted the composition of stainless steel is :
Iron - 98%
Carbon - 2%
17. 1. XII class Chemistry NCERT Books
2. iCBSE.com
3. XII class Chemistry Practical Book
4. Photos from Google images.
5. More Information from Wikipedia..
THE END !