The document contains summaries of several diagrams showing different scientific processes and experiments. It provides answers to questions about the diagrams, identifying variables, materials, observations, and conclusions. The key information summarized is that the document contains expert summaries and explanations of multiple scientific diagrams and experiments.
This document is the cover sheet and first 7 pages of a chemistry exam. It provides instructions for candidates to write their details, not use additional materials, and answer all questions. The exam consists of 7 multi-part chemistry questions testing understanding of topics like the contact process for sulfuric acid production, precipitation reactions, electrolysis, polymers, and stoichiometry.
This document consists of a 14 page chemistry exam with multiple choice and free response questions covering topics like the halogens, redox reactions, organic chemistry, acid-base reactions, and metals/alloys. It includes diagrams of lab setups and reagents/products. The exam provides space for students to show their work and includes a periodic table reference.
This document contains mark schemes for Chemistry examinations from June 2004, including:
- The mark scheme and maximum marks for multiple choice, core, and extended papers.
- Details on how examiners were instructed to award marks and handle unexpected responses.
- Grade thresholds for each exam component.
- Sample exam questions and answers with marks allocated.
Find the best class 10 science sample paper at Studymate that can help students to excel in their board exams. These study materials help students to improve their weaker areas in the aforementioned subject. Visit https://bit.ly/33h4Yxn
This document appears to be an exam paper for a chemistry test. It consists of 7 multi-part questions covering various chemistry topics such as:
- Transition elements and the extraction of iron
- Reactivity of metals with water and acids
- Acids, bases and pH
- Oxides and their reactions
- Structures of carbon, silicon and germanium compounds
- Contact process for making sulfuric acid
- Combustion reactions and cell reactions
- Cracking of hydrocarbons
The questions require students to identify substances, write equations, describe processes, explain concepts, make predictions and draw structural formulas. An answer sheet is provided for students to write their responses.
The document discusses the use of variant question papers by CIE (Cambridge International Examinations) for some of their popular assessments. It explains that while the content and standard of assessment remains the same, there are now two variants of the question papers, mark schemes, and principal examiner reports available for one component. This provides centers with more past examination material than usual to access. It includes both variants in the document. It also provides contact information for any questions about these changes and instructions for identifying the relevant parts of the document.
This document is the cover sheet and first 7 pages of a chemistry exam. It provides instructions for candidates to write their details, not use additional materials, and answer all questions. The exam consists of 7 multi-part chemistry questions testing understanding of topics like the contact process for sulfuric acid production, precipitation reactions, electrolysis, polymers, and stoichiometry.
This document consists of a 14 page chemistry exam with multiple choice and free response questions covering topics like the halogens, redox reactions, organic chemistry, acid-base reactions, and metals/alloys. It includes diagrams of lab setups and reagents/products. The exam provides space for students to show their work and includes a periodic table reference.
This document contains mark schemes for Chemistry examinations from June 2004, including:
- The mark scheme and maximum marks for multiple choice, core, and extended papers.
- Details on how examiners were instructed to award marks and handle unexpected responses.
- Grade thresholds for each exam component.
- Sample exam questions and answers with marks allocated.
Find the best class 10 science sample paper at Studymate that can help students to excel in their board exams. These study materials help students to improve their weaker areas in the aforementioned subject. Visit https://bit.ly/33h4Yxn
This document appears to be an exam paper for a chemistry test. It consists of 7 multi-part questions covering various chemistry topics such as:
- Transition elements and the extraction of iron
- Reactivity of metals with water and acids
- Acids, bases and pH
- Oxides and their reactions
- Structures of carbon, silicon and germanium compounds
- Contact process for making sulfuric acid
- Combustion reactions and cell reactions
- Cracking of hydrocarbons
The questions require students to identify substances, write equations, describe processes, explain concepts, make predictions and draw structural formulas. An answer sheet is provided for students to write their responses.
The document discusses the use of variant question papers by CIE (Cambridge International Examinations) for some of their popular assessments. It explains that while the content and standard of assessment remains the same, there are now two variants of the question papers, mark schemes, and principal examiner reports available for one component. This provides centers with more past examination material than usual to access. It includes both variants in the document. It also provides contact information for any questions about these changes and instructions for identifying the relevant parts of the document.
This document contains the mark scheme for the May/June 2006 International General Certificate of Secondary Education (IGCSE) Chemistry exam. It provides guidance to examiners on how to award marks for students' answers, including identifying acceptable alternative responses. The mark scheme also indicates the minimum marks required to achieve different overall grades. CIE will not enter into discussions about the mark scheme.
The document discusses changes made by CIE to use different variants of some question papers for assessments with large candidatures, where previously there was only one variant, in order to provide more past examination material. It explains that the content and question types remain unchanged between variants, and that the relationships between question papers, mark schemes, and principal examiner's reports have been established. Candidates will typically only see one variant of a question paper for their country.
This document consists of a chemistry exam paper containing multiple choice and short answer questions testing knowledge of chemical apparatus, reactions, and experimental procedures. The questions cover topics such as identifying experimental set ups, describing chemical reactions and tests, planning investigations, analyzing results, and drawing conclusions from experiments.
This document is a 16-page exam for the International General Certificate of Secondary Education in Chemistry. It contains 7 multi-part chemistry questions testing knowledge of topics including the periodic table, atmospheric pollutants, acid-base reactions, extraction of metals, combustion reactions, organic compounds, and properties of group 1 and transition metals. It also includes a copy of the periodic table.
1) The document provides a chemistry exam for Class XII students with three sections - multiple choice questions, short answer questions, and descriptive answer questions.
2) The multiple choice section contains 16 questions testing concepts across the chemistry curriculum.
3) The short answer section contains 8 questions requiring students to provide explanations, equations, or names for various chemistry concepts.
4) The descriptive answer section provides 3 essay questions where students must explain processes, properties, or reactions in fuller detail. The exam aims to comprehensively test students' understanding of chemistry.
This document consists of a 14-page chemistry exam paper from the University of Cambridge International Examinations. The exam paper contains 8 multi-part chemistry questions testing students' knowledge of topics including the properties of gases, calcium carbonate, the Haber process, food chemistry, and reaction rates. It also includes a periodic table of elements.
The document describes changes made by the Cambridge International Examinations (CIE) to question papers for popular assessments with large candidature. CIE now uses two similar but distinct variants for some question papers instead of just one. The content and standard assessed remains the same between variants. Centres will receive both variants, allowing access to more past exam material. The relationship between question papers, mark schemes, and examiner reports is shown in a table. Any questions about these changes should be directed to CIE Customer Services. The titles of the variant items should clearly indicate which variant they correspond to.
This document is a chemistry exam paper consisting of 10 printed pages and 2 blank pages. It contains questions on topics such as the Contact Process for making sulfuric acid, properties of manganese, Period 3 elements, alkenes, and electrolysis of copper sulfate. The exam is marked out of a total number of marks given at the end of each question.
Engineering Chemistry 2 Jntu Model Paper{Www.Studentyogi.Com}guest3f9c6b
This document appears to contain exam questions for an Engineering Chemistry course. It includes 8 multi-part questions covering various topics related to water treatment, corrosion, fuels, lubrication, and polymers. Students are instructed to answer any 5 of the 8 questions, with all questions carrying equal marks. The questions assess understanding of concepts like water softening methods, corrosion mechanisms, properties and uses of materials like polymers and fuels, and analytical techniques like titration.
Engineering Chemistry Jntu Model Paper{Www.Studentyogi.Com}guest3f9c6b
This document contains four sets of questions for an Engineering Chemistry exam. Each set contains 8 questions related to topics in engineering chemistry. The questions cover topics like water chemistry, corrosion, fuels, lubricants, polymers, coatings, and refractory materials. Students are instructed to answer any 5 of the 8 questions in each set, which vary in length from short answer to longer explanations and calculations.
This document consists of exam questions related to chemistry. It includes 14 pages of multiple choice and free response questions testing knowledge of topics like the composition of air, classification of oxides, properties of metals like zinc and their compounds, organic compounds and reactions, and industrial processes like the contact process for producing sulfuric acid. The exam is for the International General Certificate of Secondary Education in Chemistry.
This document is a chemistry exam paper that consists of 7 questions testing knowledge of various chemistry concepts. It provides instructions for candidates on how to answer the questions, including writing in boxes provided and not writing in barred code or grey areas. It also lists the number of marks allocated for each question or part of a question. Finally, it states that the exam paper is made up of 14 printed pages and 2 blank pages.
This document is a mark scheme for a chemistry exam. It provides guidance to teachers on how to award marks to exam questions. It shows the requirements to receive marks, such as specifying the correct answers or showing the correct steps and reasoning. It does not discuss the exam itself or alternative answers, only the basis for marking. Teachers should use this document along with the exam papers and exam report to properly award marks to student responses.
This document consists of a 13-page chemistry exam from 2007 including:
1) Questions about techniques to separate mixtures, the structure of magnesium bromide, and extracting zinc.
2) Questions involving the properties of alcohols, rates of reaction, and organic reactions.
3) A periodic table of the elements printed on page 16.
This document provides a sample chemistry question paper for Class XII. It includes:
1) Details on the number and type of questions, including short answer, long answer and value based questions.
2) Instructions for students on completing the paper.
3) Sample questions covering topics in chemistry like thermodynamics, equilibrium, redox reactions, organic chemistry and biomolecules.
4) A value based question assessing students' ability to apply chemistry knowledge to an ethical scenario.
The document discusses the production of ammonia via the Haber process. Key points:
- Ammonia is produced by reacting nitrogen and hydrogen gases over an iron catalyst at high temperature (450°C) and pressure (200 atm).
- The balanced equation for the reaction is: N2 + 3H2 → 2NH3
- Unreacted gases are recycled in the process. Ammonia is then cooled to be liquified.
The document discusses CIE's use of variant question papers for some popular assessments with large candidatures. It explains that while the content and question types remain the same, there are now two variants of the question paper, mark scheme, and principal examiner's report for one component. Centres will use only one variant, but this provides access to more past examination material. It includes a diagram showing the relationship between the question papers, mark schemes, and reports for the two variants. The document also provides contact information for questions about these changes.
This document consists of a 14 page chemistry exam for the International General Certificate of Secondary Education. The exam contains multiple choice and free response questions testing knowledge of topics including:
- Gases in air and common air pollutants
- Classification of oxides
- Reactions of zinc and uses of zinc
- Electrochemistry of galvanic cells
- Allotropes and uses of oxygen
- Acid-base reactions involving iodine
- Structures and properties of group 14 elements
- Contact process for sulfuric acid production
- Hydrocarbon reactions to form alcohols
This document is a 14-page exam for the International General Certificate of Secondary Education in Chemistry. It contains 7 multi-part questions testing knowledge of topics including fossil fuels, salt preparations, the periodic table, electrolysis of molten aluminum, esters and fats, and corrosion protection of steel structures. Blank pages are included at the end for calculations and diagrams.
The document lists over 20 research projects conducted in collaboration with various industry partners between 2000-2007. The projects covered a wide range of topics related to hydrometallurgy including copper electrowinning, heap leaching, removal of impurities from Bayer process liquors, leaching of ores with acids, recovery of precious metals via cyanidation and thiosulfate leaching, and addressing problems like anode corrosion and preg-robbing in gold processing. Many of the projects focused on developing processing methods for ores and tailings from specific mine sites.
- Experimental tests were conducted on double lap timber joints bonded with different adhesives, including stiff epoxy and softer plastic adhesives.
- The tests found no significant differences in load-displacement curves or influence on strength between the different adhesives. Failure occurred brittlely in the timber.
- Numerical modeling confirmed the softer adhesives reduced stress magnitudes but also increased the stressed volumes.
- A probabilistic approach is needed to explain the relationship between stress and strength, rather than a direct correlation, due to size effects and the brittle nature of timber.
- While ductile adhesives reduce stresses, they do not necessarily increase joint strength as expected based on a stress-
Electrolysis is the process of using electric current to cause non-spontaneous chemical changes. During electrolysis, ions are discharged at the electrodes. The key factors that determine which ions are discharged include the position of ions in the electrochemical series, concentration of ions, and type of electrode. Electrolysis has various industrial applications including electroplating, metal purification, and metal extraction.
This document contains the mark scheme for the May/June 2006 International General Certificate of Secondary Education (IGCSE) Chemistry exam. It provides guidance to examiners on how to award marks for students' answers, including identifying acceptable alternative responses. The mark scheme also indicates the minimum marks required to achieve different overall grades. CIE will not enter into discussions about the mark scheme.
The document discusses changes made by CIE to use different variants of some question papers for assessments with large candidatures, where previously there was only one variant, in order to provide more past examination material. It explains that the content and question types remain unchanged between variants, and that the relationships between question papers, mark schemes, and principal examiner's reports have been established. Candidates will typically only see one variant of a question paper for their country.
This document consists of a chemistry exam paper containing multiple choice and short answer questions testing knowledge of chemical apparatus, reactions, and experimental procedures. The questions cover topics such as identifying experimental set ups, describing chemical reactions and tests, planning investigations, analyzing results, and drawing conclusions from experiments.
This document is a 16-page exam for the International General Certificate of Secondary Education in Chemistry. It contains 7 multi-part chemistry questions testing knowledge of topics including the periodic table, atmospheric pollutants, acid-base reactions, extraction of metals, combustion reactions, organic compounds, and properties of group 1 and transition metals. It also includes a copy of the periodic table.
1) The document provides a chemistry exam for Class XII students with three sections - multiple choice questions, short answer questions, and descriptive answer questions.
2) The multiple choice section contains 16 questions testing concepts across the chemistry curriculum.
3) The short answer section contains 8 questions requiring students to provide explanations, equations, or names for various chemistry concepts.
4) The descriptive answer section provides 3 essay questions where students must explain processes, properties, or reactions in fuller detail. The exam aims to comprehensively test students' understanding of chemistry.
This document consists of a 14-page chemistry exam paper from the University of Cambridge International Examinations. The exam paper contains 8 multi-part chemistry questions testing students' knowledge of topics including the properties of gases, calcium carbonate, the Haber process, food chemistry, and reaction rates. It also includes a periodic table of elements.
The document describes changes made by the Cambridge International Examinations (CIE) to question papers for popular assessments with large candidature. CIE now uses two similar but distinct variants for some question papers instead of just one. The content and standard assessed remains the same between variants. Centres will receive both variants, allowing access to more past exam material. The relationship between question papers, mark schemes, and examiner reports is shown in a table. Any questions about these changes should be directed to CIE Customer Services. The titles of the variant items should clearly indicate which variant they correspond to.
This document is a chemistry exam paper consisting of 10 printed pages and 2 blank pages. It contains questions on topics such as the Contact Process for making sulfuric acid, properties of manganese, Period 3 elements, alkenes, and electrolysis of copper sulfate. The exam is marked out of a total number of marks given at the end of each question.
Engineering Chemistry 2 Jntu Model Paper{Www.Studentyogi.Com}guest3f9c6b
This document appears to contain exam questions for an Engineering Chemistry course. It includes 8 multi-part questions covering various topics related to water treatment, corrosion, fuels, lubrication, and polymers. Students are instructed to answer any 5 of the 8 questions, with all questions carrying equal marks. The questions assess understanding of concepts like water softening methods, corrosion mechanisms, properties and uses of materials like polymers and fuels, and analytical techniques like titration.
Engineering Chemistry Jntu Model Paper{Www.Studentyogi.Com}guest3f9c6b
This document contains four sets of questions for an Engineering Chemistry exam. Each set contains 8 questions related to topics in engineering chemistry. The questions cover topics like water chemistry, corrosion, fuels, lubricants, polymers, coatings, and refractory materials. Students are instructed to answer any 5 of the 8 questions in each set, which vary in length from short answer to longer explanations and calculations.
This document consists of exam questions related to chemistry. It includes 14 pages of multiple choice and free response questions testing knowledge of topics like the composition of air, classification of oxides, properties of metals like zinc and their compounds, organic compounds and reactions, and industrial processes like the contact process for producing sulfuric acid. The exam is for the International General Certificate of Secondary Education in Chemistry.
This document is a chemistry exam paper that consists of 7 questions testing knowledge of various chemistry concepts. It provides instructions for candidates on how to answer the questions, including writing in boxes provided and not writing in barred code or grey areas. It also lists the number of marks allocated for each question or part of a question. Finally, it states that the exam paper is made up of 14 printed pages and 2 blank pages.
This document is a mark scheme for a chemistry exam. It provides guidance to teachers on how to award marks to exam questions. It shows the requirements to receive marks, such as specifying the correct answers or showing the correct steps and reasoning. It does not discuss the exam itself or alternative answers, only the basis for marking. Teachers should use this document along with the exam papers and exam report to properly award marks to student responses.
This document consists of a 13-page chemistry exam from 2007 including:
1) Questions about techniques to separate mixtures, the structure of magnesium bromide, and extracting zinc.
2) Questions involving the properties of alcohols, rates of reaction, and organic reactions.
3) A periodic table of the elements printed on page 16.
This document provides a sample chemistry question paper for Class XII. It includes:
1) Details on the number and type of questions, including short answer, long answer and value based questions.
2) Instructions for students on completing the paper.
3) Sample questions covering topics in chemistry like thermodynamics, equilibrium, redox reactions, organic chemistry and biomolecules.
4) A value based question assessing students' ability to apply chemistry knowledge to an ethical scenario.
The document discusses the production of ammonia via the Haber process. Key points:
- Ammonia is produced by reacting nitrogen and hydrogen gases over an iron catalyst at high temperature (450°C) and pressure (200 atm).
- The balanced equation for the reaction is: N2 + 3H2 → 2NH3
- Unreacted gases are recycled in the process. Ammonia is then cooled to be liquified.
The document discusses CIE's use of variant question papers for some popular assessments with large candidatures. It explains that while the content and question types remain the same, there are now two variants of the question paper, mark scheme, and principal examiner's report for one component. Centres will use only one variant, but this provides access to more past examination material. It includes a diagram showing the relationship between the question papers, mark schemes, and reports for the two variants. The document also provides contact information for questions about these changes.
This document consists of a 14 page chemistry exam for the International General Certificate of Secondary Education. The exam contains multiple choice and free response questions testing knowledge of topics including:
- Gases in air and common air pollutants
- Classification of oxides
- Reactions of zinc and uses of zinc
- Electrochemistry of galvanic cells
- Allotropes and uses of oxygen
- Acid-base reactions involving iodine
- Structures and properties of group 14 elements
- Contact process for sulfuric acid production
- Hydrocarbon reactions to form alcohols
This document is a 14-page exam for the International General Certificate of Secondary Education in Chemistry. It contains 7 multi-part questions testing knowledge of topics including fossil fuels, salt preparations, the periodic table, electrolysis of molten aluminum, esters and fats, and corrosion protection of steel structures. Blank pages are included at the end for calculations and diagrams.
The document lists over 20 research projects conducted in collaboration with various industry partners between 2000-2007. The projects covered a wide range of topics related to hydrometallurgy including copper electrowinning, heap leaching, removal of impurities from Bayer process liquors, leaching of ores with acids, recovery of precious metals via cyanidation and thiosulfate leaching, and addressing problems like anode corrosion and preg-robbing in gold processing. Many of the projects focused on developing processing methods for ores and tailings from specific mine sites.
- Experimental tests were conducted on double lap timber joints bonded with different adhesives, including stiff epoxy and softer plastic adhesives.
- The tests found no significant differences in load-displacement curves or influence on strength between the different adhesives. Failure occurred brittlely in the timber.
- Numerical modeling confirmed the softer adhesives reduced stress magnitudes but also increased the stressed volumes.
- A probabilistic approach is needed to explain the relationship between stress and strength, rather than a direct correlation, due to size effects and the brittle nature of timber.
- While ductile adhesives reduce stresses, they do not necessarily increase joint strength as expected based on a stress-
Electrolysis is the process of using electric current to cause non-spontaneous chemical changes. During electrolysis, ions are discharged at the electrodes. The key factors that determine which ions are discharged include the position of ions in the electrochemical series, concentration of ions, and type of electrode. Electrolysis has various industrial applications including electroplating, metal purification, and metal extraction.
This document provides information about electrolytic processes and electrolysis. It discusses key points about electrolysis, including that ions must be free to move towards electrodes. It then summarizes different types of electrolysis including molten salts like NaCl, aqueous solutions like NaCl, and using copper electrodes. Electroplating is also discussed as coating a metal with another using electricity, with examples like silver plating brass.
Novel electrowinning technologies are now a days has great talks among todays scientist. I heartily thanks to the behind this ppt.Namely- bhagyashree,neelu sheoran,pranitha geedigunta. thanks gls...
The document discusses electroplating, which involves using electrolysis to coat a thin layer of one metal onto another. It explains that electroplating can be used to protect against corrosion or improve appearance. It then provides details on the electroplating process, where the metal to be plated is the cathode and connects to the negative terminal, while the metal used for plating is the anode and connects to the positive terminal. Ions of the anode metal dissolve and deposit onto the cathode. Copper plating of other metals like copper is provided as an example.
Half-reactions indicate the mole ratio of electrons to ions involved in redox reactions. The document discusses how current, time, and charge are related based on 1 mole of electrons equating to 96,500 Coulombs of charge. It provides examples calculating the mass of copper produced from electrolysis and the volume of chlorine gas produced from an industrial electrolysis process based on given values of current and time.
The document summarizes electrolysis of aqueous solutions. It defines electrolysis as the process of using an electric current to cause a non-spontaneous chemical reaction. It describes that during electrolysis, cations move to the cathode and are reduced, while anions move to the anode and are oxidized. Factors like the electrochemical series, ion concentration, and electrode type determine which ions are discharged. Products are identified based on half-reactions and observations like gas evolution and metal deposition.
Electrolysis is the process of using direct electrical current to cause a non-spontaneous chemical reaction. During electrolysis, ions conduct electricity and move towards the electrode that attracts them. The key factors that determine the products of electrolysis include:
1) The type of electrolyte, whether it is a molten salt or aqueous solution, determines which ions are present and can be reduced or oxidized.
2) An ion's position in the electrochemical series indicates its tendency to gain or lose electrons. Ions lower in the series are more readily reduced or oxidized.
3) The concentration of the electrolyte solution can allow ions higher in the electrochemical series to also be reduced or
This document discusses electrolysis, which is the process of using direct current to cause non-spontaneous chemical reactions. Electrolysis requires an electrolyte containing free ions, a direct current power supply, and two electrodes. During electrolysis, ions are oxidized or reduced at the electrodes through electron transfer. As an example, electrolysis can be used to purify copper by dissolving impure copper and conducting electrolysis, depositing pure copper at the cathode. Electrolysis equations describe the half-reactions that occur at each electrode. The document also provides an example of electrolyzing brine to produce chlorine gas, hydrogen gas, and sodium hydroxide.
The document discusses electrochemistry and electrolysis. It defines electrolytes and non-electrolytes, and explains how electrolytes can conduct electricity in molten or aqueous states through the movement of ions. Examples are given of electrolysis processes and how electrolysis can be used for metal extraction, purification, and electroplating.
This document discusses the uses of electrolysis in industries, including the purification of metals, electroplating of metals, and extraction of metals. It provides examples of how electrolysis is used to purify copper, electroplate metals like tin onto cans, and extract reactive metals like aluminum from ores. The document also notes some of the potential pollution problems caused by electrolysis in industry, such as releasing heavy metals and altering the pH of water resources.
The document discusses various heat treatment processes. It defines heat treatment as operations involving heating and cooling of metals/alloys in their solid state to obtain desirable properties. It describes the stages of heat treatment as heating, soaking, and cooling. It then discusses various heat treatment processes like annealing, normalizing, hardening, and tempering in detail including their purposes, methods, and effects on material properties.
This document discusses separation techniques for mixtures and pure substances. It explains that a pure substance contains only one type of atom or molecule, while a mixture is formed when two or more substances are mixed but do not chemically react. Impurities in solids and liquids cause their melting and boiling points to change - for solids the melting point is depressed and for liquids it is elevated. Various physical separation methods are described that can be used to separate mixtures based on differences in their physical properties.
The document provides a marking scheme for a chemistry exam involving manufactured substances in industry. It includes questions on industrial processes like the Haber process and contact process, polymers, alloys, composites, and an experiment on the rusting of iron and steel. The marking scheme provides the answers and scoring rubrics for questions assessing students' understanding of key concepts and ability to plan experiments.
CBSE10th Science Sample Question Paper 2019Miso Study
Misostudy offers you free CBSE10th Science Sample Question Paper 2019, These papers having most important questions that are specially designed for CBSE class 10 aspirants on the basis of latest exam pattern. Every question is solved by our expert faculty in this field.
This document contains a model question paper for class 10 physical science with 40 total marks. It is divided into 4 sections:
1) Section I contains 4 mark questions with detailed answers required (16 marks total). Example questions include chemical reactions of calcium oxide and hydrochloric acid, and the use of detergents.
2) Section II contains short answer questions worth 4 marks total.
3) Section III contains very short answer questions worth 6 marks total.
4) Section IV contains multiple choice questions worth 6 marks total. The final section provides a blueprint of the question distribution.
1) The document contains an exam for engineering chemistry with multiple choice and long answer questions.
2) Questions cover topics like batteries, fuel cells, corrosion, electrochemistry, and polymers.
3) Students are asked to choose the correct answer for multiple choice questions, define terms, derive equations, describe processes, and explain concepts.
1) The document contains an exam for engineering chemistry with multiple choice and long answer questions.
2) Questions cover topics like batteries, fuel cells, corrosion, electrochemistry, and polymers.
3) Students are instructed to answer 5 full questions by choosing at least 2 from each part, and to answer objective questions on a separate OMR sheet.
The document contains sample exam questions from various years on topics related to atomic structure, the periodic table, ionization energies, atomic spectra, bonding, and the historical experiments that led to discoveries about atomic structure. It includes multiple choice and open response questions testing definitions, explanations of trends, interpretations of data, and descriptions of experiments. The questions would require a strong understanding of foundational atomic and molecular concepts as well as the ability to apply this knowledge to analyze new situations.
The document contains sample exam questions from various years on topics related to atomic structure and the periodic table. It includes multiple choice and open response questions testing definitions, concepts, and explanations of trends. The questions cover topics such as ionization energies, atomic spectra, isotopes, atomic structure, bonding and shapes of molecules, and the historical experiments that led to discoveries about atomic models.
This document contains 10 multiple choice questions about metals and non-metals. It tests understanding of concepts such as why electric wires are insulated, which metals displace hydrogen from acids, how metals are extracted from their ores, properties of ionic compounds, corrosion of metals, and identification of reactivity based on observations of reactions. The questions cover topics like chemical equations, physical properties, and experimental testing to identify gases evolved in reactions between metals and other substances.
This document provides information about variants of question papers used for Cambridge International Examinations (CIE) assessments. It explains that for some popular exams, CIE uses two closely related variants of the question paper to maintain best assessment practices. Both variants assess the same content and skills to the same standard. Accompanying materials like mark schemes and examiner reports are also available in two variants. Schools will use only one variant for a given exam session. This provides students and teachers access to more past paper material for preparation. The document outlines the relationship between the question paper variants and corresponding marking and examiner materials. It also provides contact information for any questions about these changes.
This document is a standardized test for chemistry taken by students in Form 4 at a Malaysian secondary school. It consists of 3 sections - Section A with 20 objective questions, Section B with 3 subjective questions, and Section C with 1 essay question. The test covers topics in chemistry including chemical equations, properties of substances, polymers, electrolysis, electrochemistry and industrial processes. It provides instructions for students on the format and time limit for the test.
This document is a 16-page exam for the International General Certificate of Secondary Education in Chemistry. It contains 7 exam questions testing students' knowledge of topics including the periodic table, atmospheric pollution, acid-base reactions, extraction of metals, combustion reactions, organic compounds, and properties of calcium chloride. Diagrams and tables are provided to aid in answering multiple-choice and written response questions.
This document is a 16-page exam for the International General Certificate of Secondary Education in Chemistry. It contains 7 exam questions testing knowledge of topics including the periodic table, atmospheric pollution, acid-base reactions, extraction of metals, organic compounds, and calcium compounds. Diagrams and tables are provided, and students are to show workings, complete equations, and answer short questions.
The document provides a lesson plan on chemistry topics including:
1. Diagnostic questions, answering techniques, and the particulate nature of matter will be covered.
2. Answering techniques include short answers, active sentences, keywords, and relating topics like acids/bases.
3. The particulate nature of matter is explained using kinetic particle theory including the properties of solids, liquids, and gases. Particle movement and intermolecular forces are related to physical properties.
CBSE Science Paper | 10th Class | Mia Miaseomiamia
Mia Mia is one of the best listing website for Science Classes in Mumbai. We are also known for our systematic listing of various IPCC, Science coaching for CBSE, Engineering and other courses in Mumbai. QLI is a class where each student is our priority. We are one of the best listing website for Science Classes in Mumbai.
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
A Visual Guide to 1 Samuel | A Tale of Two HeartsSteve Thomason
These slides walk through the story of 1 Samuel. Samuel is the last judge of Israel. The people reject God and want a king. Saul is anointed as the first king, but he is not a good king. David, the shepherd boy is anointed and Saul is envious of him. David shows honor while Saul continues to self destruct.
Level 3 NCEA - NZ: A Nation In the Making 1872 - 1900 SML.pptHenry Hollis
The History of NZ 1870-1900.
Making of a Nation.
From the NZ Wars to Liberals,
Richard Seddon, George Grey,
Social Laboratory, New Zealand,
Confiscations, Kotahitanga, Kingitanga, Parliament, Suffrage, Repudiation, Economic Change, Agriculture, Gold Mining, Timber, Flax, Sheep, Dairying,
Temple of Asclepius in Thrace. Excavation resultsKrassimira Luka
The temple and the sanctuary around were dedicated to Asklepios Zmidrenus. This name has been known since 1875 when an inscription dedicated to him was discovered in Rome. The inscription is dated in 227 AD and was left by soldiers originating from the city of Philippopolis (modern Plovdiv).
Walmart Business+ and Spark Good for Nonprofits.pdfTechSoup
"Learn about all the ways Walmart supports nonprofit organizations.
You will hear from Liz Willett, the Head of Nonprofits, and hear about what Walmart is doing to help nonprofits, including Walmart Business and Spark Good. Walmart Business+ is a new offer for nonprofits that offers discounts and also streamlines nonprofits order and expense tracking, saving time and money.
The webinar may also give some examples on how nonprofits can best leverage Walmart Business+.
The event will cover the following::
Walmart Business + (https://business.walmart.com/plus) is a new shopping experience for nonprofits, schools, and local business customers that connects an exclusive online shopping experience to stores. Benefits include free delivery and shipping, a 'Spend Analytics” feature, special discounts, deals and tax-exempt shopping.
Special TechSoup offer for a free 180 days membership, and up to $150 in discounts on eligible orders.
Spark Good (walmart.com/sparkgood) is a charitable platform that enables nonprofits to receive donations directly from customers and associates.
Answers about how you can do more with Walmart!"
Chapter wise All Notes of First year Basic Civil Engineering.pptxDenish Jangid
Chapter wise All Notes of First year Basic Civil Engineering
Syllabus
Chapter-1
Introduction to objective, scope and outcome the subject
Chapter 2
Introduction: Scope and Specialization of Civil Engineering, Role of civil Engineer in Society, Impact of infrastructural development on economy of country.
Chapter 3
Surveying: Object Principles & Types of Surveying; Site Plans, Plans & Maps; Scales & Unit of different Measurements.
Linear Measurements: Instruments used. Linear Measurement by Tape, Ranging out Survey Lines and overcoming Obstructions; Measurements on sloping ground; Tape corrections, conventional symbols. Angular Measurements: Instruments used; Introduction to Compass Surveying, Bearings and Longitude & Latitude of a Line, Introduction to total station.
Levelling: Instrument used Object of levelling, Methods of levelling in brief, and Contour maps.
Chapter 4
Buildings: Selection of site for Buildings, Layout of Building Plan, Types of buildings, Plinth area, carpet area, floor space index, Introduction to building byelaws, concept of sun light & ventilation. Components of Buildings & their functions, Basic concept of R.C.C., Introduction to types of foundation
Chapter 5
Transportation: Introduction to Transportation Engineering; Traffic and Road Safety: Types and Characteristics of Various Modes of Transportation; Various Road Traffic Signs, Causes of Accidents and Road Safety Measures.
Chapter 6
Environmental Engineering: Environmental Pollution, Environmental Acts and Regulations, Functional Concepts of Ecology, Basics of Species, Biodiversity, Ecosystem, Hydrological Cycle; Chemical Cycles: Carbon, Nitrogen & Phosphorus; Energy Flow in Ecosystems.
Water Pollution: Water Quality standards, Introduction to Treatment & Disposal of Waste Water. Reuse and Saving of Water, Rain Water Harvesting. Solid Waste Management: Classification of Solid Waste, Collection, Transportation and Disposal of Solid. Recycling of Solid Waste: Energy Recovery, Sanitary Landfill, On-Site Sanitation. Air & Noise Pollution: Primary and Secondary air pollutants, Harmful effects of Air Pollution, Control of Air Pollution. . Noise Pollution Harmful Effects of noise pollution, control of noise pollution, Global warming & Climate Change, Ozone depletion, Greenhouse effect
Text Books:
1. Palancharmy, Basic Civil Engineering, McGraw Hill publishers.
2. Satheesh Gopi, Basic Civil Engineering, Pearson Publishers.
3. Ketki Rangwala Dalal, Essentials of Civil Engineering, Charotar Publishing House.
4. BCP, Surveying volume 1
Chapter wise All Notes of First year Basic Civil Engineering.pptx
Revision set 2
1. Diagram 6 shows copper refining using electrolysis
Q:........................................................P :......................................... .
DIAGRAM 3
[3 marks]
(a) On diagram 3, name P, Q and R by using the following information
Pure copper
Impure copper
Copper(II) sulphate
(b) State the energy changes in this electrolysis process
(c) Why metal P becomes thinner in the electrolysis process?
(d) State one use of electrolysis other than metal refining.
ANSWER:
(a) P : Impure Copper
Q : Pure Copper
R : Copper (II) sulphate solution 3
b) Chemical energy to electical energy
(c) P metal dissolve to form positive ion
(d) Metal extraction//Metal electroplating
R :.........................................................
2. Diagram 4 shows radioactive radiation in electrical field.
+ + + + +
U
V : -------------------------
- - - - - - -
T : -------------------------
Radioactive source
(a) Name radioactive rays T and V in Diagram 4
(b) (i) Which ray is positively charged?
(ii) Explain your answer in b(i)
(c) Which ray is used to sterile food before packaging?
(a) State the method that can be used to stop ray U from emit to the
environment?
ANSWER:
a) T : Beta ray V : Alpha ray
(b) (i) V ray/Alpha ray (ii) because it deflect to negative plate
(c) U ray/gama ray
(d) Placed in lead block//concrete container
3. Diagram 6 shows the arrangement of atoms in a steel.
(a) Name the atom
( i ) P :
( ii ) Q :
(b) What is the role of atom P in the steel above?
(c) State two new characteristics of the steel compared to the iron.
(d) Name one alloy other than steel.
ANSWER:
(a) (i) P : Carbon
ii) Q : Iron
(b) Foreign atoms/P/carbon prevents the atoms of pure metal from sliding
over one another
(c) Harder// stronger//resistant to corrosion (any two)
(d) Brass//Pewter//Bronze
Diagram 5 shows a cross section of human brain.
DIAGRAM 5
atom P
atom Q
A
B
4. Glass wool
(
Heat Heat
(a) Based on Diagram 5, name the structures labelled A and B.
(b) State one function of structure A .
(b) State two effects of drug abuse on the brain
ANSWER:
(a) A : Cerebrum
B : Cerebellum
1 m
(b) Control the voluntary action//control speech/hearing/vision
(c) Brain damage/depression/hallucination/stay awake or
active/decrease stress/Slow down the reaction time/lost sense of
smell/vision/becomes intellectuallyincapable(any two suitable answers)
(d) Cannot maintain posture and body balance
Diagram 2 shows an experiment to study the reactivity of metals when react
with oxygen.
Three types of metals X, Y and Z are used and the results are shown in the
Table 2.
Metal Observation
X Burns with bright light
Y Glows dimly
Z Burns moderately
TABLE 2
(a) Write down one inference that can be made from observation in Table 2
(b) State the following variables in this experiment.
Metal filling
Potassium manganate (VII) (Serbuk logam)
DIAGRAM 1
5. (i) Manipulated :…………………………………….
(ii) Constant :…………………………………………
(c) Based on the results in Table 2, arrange the reactivity of the metals
from the most reactive to the least reactive.
(d) If the metals used in this experiment are magnesium, zinc and iron,
predict what is metal X?
ANSWER:
(a) Metal X is the most reactive // Metal Y is the least reactive
(b) (i) Type of metal
(ii) Amount/Quantity/Mass of metal
(c) X, Z, Y
(d) Magnesium
Diagram 3 shows the formation of twins.
Diagram 2
(a) Name process P.
(b) Name the cell division at stage Q.
(c) Describe how the two embryos are formed.
6. (d) State one characteristic of the foetuses formed.
ANSWER:
(a) Fertilisation
(b) Mitosis
(c) The zygote formed divides into two cells , then separate and move
apart.
Each zygote continues to divide through mitosis, forming two
embryos. 1
(a) The foetus have the same genetic content// gender
Essay
1. There are two types of variation, continuous variation and discontinuous
variation.
(a) Give four differences between continuous variation and discontinuous
variation. [4 marks]
(b) Diagram 8 shows various characteristics of human being.
Ability to roll tongue Blood group
Variation
(Variasi)
Type of earlob Presence of dimples
DIAGRAM 8
Study the above characteristics. Explain how you would develop a concept
based on the information in Diagram 8
Your explanation of the concept should include the following:
· Identify two common characteristics [2 marks]
· Develop initial concept [ 1 mark]
· Give another example and a non-example in relation to the concept
[2 marks]
· State the actual concept [ 1 mark]
ANSWER:
(a)
Continuous variation Discontinuous variation
7. Does not show obvious differences
in characteristics
Shows obvious differences in
characteristics
Influenced by environmental
factors
Influenced by genetic factors
Not inherited Inherited
Form a normal distribution graph Does not form a normal
distribution graph
4 m
(b)
· Two common characteristics:
Shows obvious differences in characteristics
Influenced by genetic factors
· Initial concept:
Variation that shows obvious differences in characteristics and
influenced by genetic factors is discontinuous variation.
Another example : Fingerprint // type of hair
· Non-example : Height // weight
· Actual concept:
A discontinuous variation is a variation that shows obvious
differences in characteristics and is influenced by genetic factors.
2 (a) (i) Draw and label the arrangement of particles in copper and
bronze
(ii) Explain why bronze is harder than copper?
(b) Diagram 9 shows examples of alloys
Alloys
(Aloi)
DIAGRAM 9
Pewter
(Piuter)
Bronze
(Gangsa)
Brass
(Loyang)
Study the above examples. Explain how you would develop a concept
of alloy. Your explanation of concept should include the following:
8. · Identify two common characteristics
· Develop initial concept.
· Give other examples and non-examples in relation to the
concept.
· Explain the actual concept
ANSWER:
(a) (i) Able to draw and label the arrangement of particles in copper and
bronze.
copper
Copper atom
(ii) Layers of copper atoms can slide over one another when sheared.
Tin atoms in bronze prevent copper atoms from sliding easily over
1 m
one another.
(b) (i) Two common characteristics:
· Mixture of two or more metals//mixture of a metal with a
small amount
of non-metal
Harder // more rust resistance
(ii) Initial concept:
Substance made up of two or more metals (in different
percentage) and
have better physical characteristics than its pure metal is an
alloy
(iii) Another example : ( steel / duralumin)
Non – example : Aluminium / carbon
(accept any suitable answers)
(iv) Actual concept:
Alloy is a substance made up of two or more metals (in
different percentage)
and have better physical characteristics than its pure metal.
3 Study the following statement.
Copper atom
Tin atom
bronze
9. The height of students in a classroom varies from one student to another
student and there are many values between the shortest student and the tallest
student.
(a) Suggest a hypothesis to study the above statement.
(b) Describe an experiment to test your hypothesis in 10(a) according to the
following criteria.
I. Aim of the experiment
II. Procedure or method
III. Tabulation of data and sketch the graph
IV. Conclusion
ANSWER:
a) The height of a student shows a continuous variation.
b) i) to show that the type of the variation for the height of the students in a
class is a continuous variation.
ii) - the height of each student is measured and recorded.
- The height of the student is classified into appropriate categories in
the table.
- The number of students for each category is recorded in the table.
- A histogram is drawn based on the data recorded in the table
c)Tabulation of data
Height(cm)
No.Of
students
d)The height of a student in a class shows a continuous variation.
4. (a) State two sources of water pollution and two effects on the
environment
(b) The Environmental Department had received a complaint from
Kampung Indah’s residents regarding to variety species of fishes found
floating dead in the river. The result of the investigation made on the
10. sample taken from the river proves that the river was contaminated with
effluents from the nearby palm oil factory.
Explain three methods that could be done by the factory management
in order to eliminate the sewages produced. Your explanation should
base on the following aspect:
I. Identify the problem.
II. Explain three alternatives to conserve the river.
III. List two alternatives according to their priority.
ANSWER:
a) Disposal of rubbish / sewage / fertilizer / toxic substance/chemical
substance
Effects:
Kill aquatic organisms / destruction of habits / change the pH value of
the water / leads to lack of oxygen
b) i) the variety species of fishes found floating dead in the river
ii) heating liquid effluents from the factory before dispsing them into
the river
- Recycle effluents frm the factory into useful substances / animals
feed / compost fertilizer
- Burn the oil palm waste can lead to release of thick smoke.
iii)- treating liquid effluent
- Recycle solid effluent
- Burn the waste
5. Study the following statement:
Reaction of different metals with acid will produce different volume of gas.
You are given boiling tube, cork stopper, delivery tube glass trough, water,
magnesium
powder, zinc powder and dilute sulphuric acid.
(a) Suggest a hypothesis to investigate the above statement
(b) Describe an experiment to test your hypothesis in 10(a) based on the
following criteria
(i) Aim of the experiment
11. (ii) Identification of variables
(iii) List of apparatus and materials
(iv) Procedure and methods
(v) Tabulation of Data
ANSWER:
(a) Reaction of reactive metals with acid produce a higher volume of gas/
the more reactive the metal the higher the volume of gas produced
(b) (i) To study the reactivity of metals with acid
(ii) Manipulated variable: type of metal
Responding variable: volume of gas collected
Controlled variable: concentration of dilute sulphuric acid
(iii) boiling tube, cork stopper, delivery tube, glass trough, water,
magnesium powder, zinc powder, copper powder dilute
sulphuric
acid and test tube.
(iv) 1. 5 cm3 of dilute sulphuric acid is poured into a boiling
5. The volume of gas collected is recorded in a table.
(v) Tabulation of data
Type of metal Volume of gas (cm3)
Magnesium
Zinc
Copper
tube.
2. A spatula of magnesium powder is added into the boiling
tube.
3. The gas released is collected in a test tube.
4. Steps 1-3 is repeated using zinc and copper powder.