Chemistry Practical Record Full CBSE Class 12

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The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive function. Exercise causes chemical changes in the brain that may help protect against mental illness and improve symptoms.

Chemistry Practical Record Full CBSE Class 12

This document appears to be a student project report on investigating the relationship between input/output voltage and number of turns in the primary and secondary coils of a transformer. It includes sections on introduction, theory, apparatus, procedure, observations, conclusion, and bibliography. The key points are that the output voltage of a transformer depends on the ratio of turns in the secondary coil to the primary coil, and that there are losses between the input and output resulting in the transformer's efficiency being less than 100%.

To Study the earth's magnetic field using a tangent galvanometer Tangent galv...

Arjun Kumar Sah

1) The document is a 19 page physics investigatory project submitted by a student on the topic of a tangent galvanometer. 2) A tangent galvanometer is used to measure electric current by comparing the magnetic field generated by an unknown current to the Earth's magnetic field. 3) The student describes the components of a tangent galvanometer and its operating principle. Experiments are conducted to determine the reduction factor of the galvanometer and the horizontal intensity of the Earth's magnetic field at the location.

$To find the refractive indexes of (a) water,(b) oil using a plane mirror, an ...$ $To find the refractive indexes of (a) water,(b) oil using a plane mirror, an ...$

To find the refractive indexes of (a) water,(b) oil using a plane mirror, an ...

AnkitSharma1903

1. Ankit Sharma completed a physics project to determine the refractive indices of water and oil using a plane mirror, convex lens, and adjustable needle under the guidance of his teacher Mr. P.K. Sha. 2. The project involved using the lens formula to calculate the focal lengths of the convex lens alone and in combination with water or oil, then using these values and the radius of curvature of the lens to determine the refractive indices. 3. The refractive indices calculated were 1.0831 for water and 1.2886 for oil.

Biology investigatory project

Kavita Kulkarni

This document is a student's biology investigatory project on cancer biology. It includes an index listing the topics covered, such as the description of human cancer cells, differences between healthy and cancer cells, cancer cell division, causes of cancer, cancer types and symptoms, cancer treatment, and acknowledgments and bibliography. The project provides information on the basic biology of cancer, how cancer cells differ from healthy cells, common types and symptoms of cancer, and standard cancer treatments.

Maths practical file (class 12)

Anushka Rai

The passage discusses the importance of summarization in an age of information overload. It notes that with the massive amounts of data available online, being able to quickly understand the key points of lengthy documents, articles, or reports is crucial. The ability to produce clear, concise summaries helps people save time by getting the gist of information without having to read entire lengthy sources.

PHYSICAL EDUCATION PRACTICAL FILE ( Class 12th)

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cbse 12th chemistry investigatory project

NIKHIL DWIVEDI

This document appears to be a chemistry project file submitted by Nikhil Dwivedi, a class 12 science student, on the topic of studying food adulterants. The file includes a certificate, acknowledgements, index, objective, introduction on food adulteration and laws, and details of experiments conducted to detect adulterants in foods like oils, fats, sugar and spices. The introduction provides background on food adulteration issues and legislation in India and other countries to protect consumers from health risks of adulterated foods.

Physics activity file class 12

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The document outlines the terms and conditions for a home loan agreement between a lender and borrower. It specifies details such as the loan amount, interest rate, repayment schedule, borrower obligations, default conditions, and foreclosure procedures. The lender agrees to provide a loan to the borrower to purchase a home, and the borrower agrees to repay the loan amount plus interest according to the payment schedule described.

Chemistry project on study of constituents of alloys

pranav1645

- 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.

TOPIC-To investigate the relation between the ratio of :-1. Input and outpu...

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Full wave rectifier Physics Investigatory Project

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This document is a student project on linguistic chauvinism. It includes an acknowledgement, certificate, and index signed by the student and teacher. The objective is to explain linguistic chauvinism, highlight the importance of language, and describe related historical events. The project covers the concept of linguistic chauvinism, importance of language, relationship between language and culture, and historical examples like the Franco-Prussian War, Japanese invasion of Korea, and annexation of Tibet by China where linguistic identity was threatened. The conclusion is that imposing foreign languages can create inferiority complexes and suppress future uprisings. The student reflection indicates they learned about impacts of foreign language imposition on a region's culture.

chemistry investigatory project on food adulteration

appietech

This chemistry project certificate summarizes Sharath Nair's research project on detecting common food adulterants under the guidance of his teacher Rakhi Phathak. The project includes an introduction on the history and issues of food adulteration, objectives to study common adulterants in different foods, acknowledgments, contents listing the sections, experiments conducted to detect adulterants in fats/oils, sugar, and spices, and precautions consumers can take to avoid adulterated foods.

Physics Investigatory Project - Class 12 - Tangent Galvanometer

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Physics investigatory project for class 12

Kavita Kulkarni

Spoorthi Kulkarni, a class 12 student, conducted an investigatory physics project on the factors that affect the internal resistance of a cell. The factors studied were distance between electrodes, area of electrodes, temperature of electrolytes, and concentration of electrolyte. The results showed that internal resistance increases with distance between electrodes, and decreases with increasing area of electrodes, temperature of electrolytes, and concentration of electrolyte. The project follows the guidelines for the All India Senior Secondary Certificate Examination.

Chemistry project part 1 caseins in milk......

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Transformer(Class 12 Investigatory Project)

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The document is a physics investigatory project report by a 12th grade student on transformers. It includes an introduction to transformers, the theory behind their operation, the apparatus used, experimental procedure followed to investigate the relationship between input/output voltage and primary/secondary coil turns, uses of transformers, conclusions drawn, and sources cited. The student successfully completed the project under a teacher's guidance to fulfill curriculum requirements.

PHYSICS PRACTICAL RECORD XII

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The document appears to be a scanned copy of a legal contract for the sale of a residential property located in California. The contract details the purchase price of $525,000, down payment terms, closing date, inclusion of household appliances, and procedural clauses around contingencies, possession, and risk of loss. The contract is signed and dated by both the buyer and seller agreeing to the terms of the sale.

Hindi project FILE CBSE class 12

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This document appears to be a student's chemistry project report on studying the digestion of starch by salivary amylase and the effects of temperature and pH on this process. It includes sections on objectives, introduction, materials, procedures, observations, and conclusions for 3 experiments. The first experiment examines the digestion of starch by saliva over time. The second analyzes the impact of temperature. The third evaluates the impact of pH. The report was guided by a teacher and examines the student's investigation on how salivary amylase breaks down starch at different temperatures and pH levels.

Factors on which the internal resistance/emf of a cell depends

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TO STUDY THE QUANTITY OF CASEIN PRESENT IN DIFFERENT SAMPLES OF MILK

AnkitSharma1903

This document is a certificate and report for a school science project on studying the quantity of casein in different milk samples. It was completed by Ankit Sharma, a class 12 student, under the guidance of his teacher Mr. S.C. Jatt. The report includes an introduction on milk and casein, the aim, requirements, procedure, observations, and conclusions of the experiment. It found that different milk samples contain varying percentages of casein, with buffalo milk containing the highest at 4.20% and cow milk the lowest at 3.00%.

“To estimate the charge induced on each one of the two identical Styrofoam (o...

VanshPatil7

This document is a certificate certifying that Vansh Patil of class 12th at SNBP International School completed a physics project on estimating the charge induced on two identical Styrofoam balls suspended vertically using Coulomb's Law, in partial fulfillment of a CBSE exam. The student thanks their physics teachers Miss Luna and Miss Ruchita for guidance. The project report includes an introduction to transformers, the theory behind them, sample circuit diagrams, observation tables showing measurements taken, results discussing relationships between voltage ratios and coils, and applications of transformers such as in voltage regulators.

practical file for class 12

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Logic gate class 12

Nipun Shah

This document provides an introduction to basic logic gates. It includes: 1. An introduction that defines logic gates and their use of diodes to allow or block signals based on logic conditions. 2. Descriptions of three basic logic gates - OR, AND, and NOT - including their symbols, Boolean expressions, and truth tables. 3. Sections on each of the three basic gates that explain how to simulate them using components like diodes, transistors, and resistors, and provide examples of their truth tables. The document serves as an overview of logic gates, their components, representations, and functions as basic building blocks of digital circuits.

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TO STUDY THE QUANTITY OF CASEIN PRESENT IN DIFFERENT SAMPLES OF MILK

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The document outlines experiments for a CBSE Class 12 Physics practical exam, including: 1. Determining the resistance of a wire and its specific resistance using a metre bridge. 2. Verifying the laws of series and parallel combinations of resistances using a metre bridge. 3. Comparing the EMF of two primary cells and determining the internal resistance of a primary cell using a potentiometer. 4. Determining the resistance of a galvanometer, converting it into an ammeter and voltmeter, and finding the refractive index of liquids and focal lengths of lenses and mirrors.

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This document describes a physics investigatory project on logic gates submitted by S. Kiruthiga of Kendriya Vidyalaya, Dharmapuri. It includes an introduction to logic gates, their basic principles and types including OR, AND, NOT, NOR and NAND gates. Circuit diagrams and truth tables are provided for each gate. The project was guided by [name removed] and certifies this as Kiruthiga's bona fide work.

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This document is a laboratory file submitted by Krishna Ballabh Gupta for his Bachelor of Technology degree in Computer Science and Engineering at Shivalik College of Engineering in 2015. It contains laboratory files on operating systems, compiler design, artificial intelligence, and visual programming and .NET technologies. Each file was submitted to a different assistant professor and includes an index and signatures.

Foootbal physical education

Aashirwad Jindal

The document provides details about the history and evolution of football/soccer rules and equipment over time. Some key points include: - During early football matches in the 1800s, players wore long pants and hats and balls were egg-shaped as they were made from pig bladders. - The weight and roundness of balls improved as rubber was discovered. Goal crossbars were added in 1875. - Referees were introduced in 1891 as the game became more organized and rules were established by the Football Association in 1863. - Over time, rules were established around aspects like offsides, fouls, free kicks, corner kicks, and penalties. Goalkeeping rules also evolved.

Physical Project Class 12

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identification of cations and anions present in toothpaste

M Sai Sankharan

The document describes an experiment to identify the cations and anions present in toothpaste. Key findings include: - Tests were conducted on samples of toothpaste using chemical reagents. Precipitates formed indicating the presence of calcium, magnesium, phosphate, carbonate, and iodide ions. - Additional components found in toothpaste include abrasives like silica, fluoride compounds, and surfactants. Other common ingredients are antibacterial agents, flavorings, and remineralizers. - Toothpaste aims to promote oral hygiene through abrasion of plaque, delivery of fluoride, and foaming which helps distribute the paste. While not intended for swallowing, small amounts accidentally ingested are generally

Chemistry Investigatory Project Class 12

Self-employed

This document is a student's chemistry investigatory project report on studying the setting of cement mixtures over time. It includes an introduction on cement, the aim to study how cement mixtures with sand, fly ash, and time affect strength. The procedures take cement mixtures and tests their strength after 3, 7, and 30 days by attempting to break slabs. The results found that strength increased with longer setting time and mixtures with fly ash and limestone showed lower required weights to break after each time period compared to a sand-only mixture.

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