Unit-1 THE SOLID STATE QUESTIONS VSA QUESTIONS (1 - MARK QUESTIONS) 1. 2. 3. 4. 8. 9. What are anistropic substances. Why are amorphous solids isotropic in nature? Why glass is regarded as an amorphous solid? Define the term ’crystal lattice.’ Define the term voids. What type of stochiometric defect is shown by (i) ZnS and (ii) CsCl? [Hint. : (i) Frenkel defect (ii) Schottky defect] *10. If the formula of a compound is A2B‚ which sites would be occupied by A ions? [Hint. : Number of A ions is
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Andrew Fung Fung 1 Kathleen/Foley Muppet Magic February 23‚ 2010 The Dark Crystal Film Analysis Making its debut 1982‚ The Dark Crystal‚ created and directed by puppeteers Jim Henson and Frank Oz‚ was a fantasy film that involved intricate puppeteers and animatronics. Aside from The Muppets and Sesame Street‚ which involves more comedic skits to relay their message to its viewers‚ The Dark Crystal was a different kind of muppet movie because it used fantasy‚ fiction and action to tell
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and Combustible Liquids? Put simply‚ flammable and combustible liquids are liquids that can burn. The real difference lies within their flash point range‚ or lowest temperature at which vapours of the material will ignite when supplied with an ignition source. Flammable and combustible liquids are utilised in most workplaces‚ from manufacturing to retail and service entities. To ensure the safety of property‚ people‚ and the environment‚ both flammable and combustible liquids need to be handled
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Combustible Liquids (Examples: alcohols‚ esters‚ ethers‚ ketones) Vapors from flammable and combustible liquids can mix with air and burn if they contact an ignition source. Possible ignition sources include hot electrical wires‚ hot surfaces‚ open flames‚ hot particles and embers‚ and sparks. The lowest temperature at which a liquid releases enough vapor to start burning is called the flash point. The flash point is what distinguishes a flammable liquid from a combustible liquid. Flammables:
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pH of several different liquids as well as learning how to change the pH of those liquids by adding other acidic and alkaline mixtures. Materials: Graduated cylinder- used to measure the various liquids 4 100 mL beakers- used to hold liquids when measuring pH pH meter- used to measure the pH of the various liquids Tap water- liquid we are trying to find pH of Distilled water- liquid we are trying to find pH of Soda- liquid we are trying to find pH of Milk- liquid we are trying to find pH
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Charisse Brittney Ann Vicente __________________ THE SCIENTIFIC METHOD: IDENTIFYING WHICH LIQUID EVAPORATES FASTER I. Objectives To know the step-by-step procedure in conducting an experiment To determine how the process of scientific method helps us to solve a certain problem To identify which liquid evaporates faster. II. Science Concept Evaporation is the process whereby atoms or molecules in a liquid state gain sufficient energy to enter the gaseous state. The rate of evaporation is dependent
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due to equilibrium between two molecular species‚ acid-base‚ keto-enol‚ lactim-lactam‚ or between stereoisomer or between crystal structures. This type of thermochromism has various applications for fiber optical science‚ photo storage instrument‚ optical sensor‚ and so on. We can divide three parts on the basis of materials (1) Variation in Crystal Structure (liquid crystal) (2) Stereoisomer (3) Molecular Rearrangement Advantages of organic compound thermochromism are that color change takes
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FAILED PRODUCT REPORT ’’ Crystal Pepsi Prepared by Yeo & Ong March 5‚ 2009 There was a marketing fad in early 1990s equating clarity with purity. Just to name a few‚ Miller Brewing Co. came up with Miller Clear(March 1993)‚ Coors Brewing Co. came up with Zima Clearmalt (1992)‚ Procter & Gamble came up with Ivory clear liquid hand cleanser and Colgate-Palmolive came up with Clear Sparkling fresh dishwashing liquid. Last but not least‚ PepsiCo came up with Crystal Pepsi in April 1992. Company
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Bette Nesmith Graham As electric typewriters came into widespread use after World War II‚ Bette Nesmith Graham and countless other secretaries let out a collective groan. The new machines did make typing easier‚ but their carbon-film ribbons made it impossible to correct mistakes neatly with a pencil eraser. As a result of this predicament‚ Graham ended up inventing one of the most widely used office products of the 20th century. Born in 1924 in Dallas‚ Texas‚ Bette Graham dropped out of high
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Paragraph 1: Crystal chemical relationship between quartz (SiO2) and FePO4 The following describes the crystal chemical relationship between quartz (SiO2) and FePO4. At temperatures below 980 K‚ FePO4 exists as alpha- FePO4. Beyond the temperature mark of 980 K (at 980 K or higher)‚ FePO4 exists as beta- FePO4. The geometrical symmetry of single cell of α- FePO4 is trigonal while the geometrical symmetry of β- FePO4 is octahedral structure. At the alpha phase‚ the cell parameters shoots up by a
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