N12/4/CHEMI/SPM/ENG/TZ0/XX 88126104 CHEMISTRY standard level Paper 1 Friday 9 November 2012 (afternoon) 45 minutes INSTRUCTIONS TO CANDIDATES • Do not open this examination paper until instructed to do so. • Answer all the questions. • For each question‚ choose the answer you consider to be the best and indicate your choice on the answer sheet provided. • The periodic table is provided for reference on page 2 of this examination paper. • The maximum mark for this examination
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HISTORY OF NANOTECHNOLOGY Nowadays the realm of Nanotechnology has getting much attention at globally. If the old days‚ bigger is much more preferable and fascinating‚ but now small has become much attention from most of the study. Most of definition on Nanotechnology revolves around the study and control of phenomena and materials at length scales below 100 nm. Beside that’s‚ Nanotechnology refers to the constructing and engineering of the functional system at very micro level/ atomic level. According
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disulfate LiF NaCl MgF2 NCl3 Identify the property which decreases across each row of the Periodic Table. (A) (B) (C) (D) Melting point Ionisation energy Valency Atomic radius 11. Which is correct in describing diamond‚ graphite and fullerenes? (A) (B) (C) (D) 13. All have similar physical properties but different chemical compositions. All have the same chemical composition but different physical properties.
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SMART MATERIALS 1. Introduction The primary characteristic of a ‘‘smart material’’ is that it has the ability to respond to external stimuli in a technically useful and technically controlled way. The words ‘‘technically useful’’ and ‘‘technically controlled’’ are emphasized since all materials respond to external stimuli of some sort or other (as a simple example‚ all materials respond to temperature by changing their volume)‚ however‚ to be considered a ‘‘smart material’’ the response must
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INTRODUCTION Nanotechnology has potential applications in many sectors of the American economy‚ including consumer products‚ health care‚ transportation‚ energy and agriculture. In addition‚ nanotechnology presents new opportunities to improve how we measure‚ monitor‚ manage‚ and minimize contaminants in the environment. While the U.S. Environmental Protection Agency (EPA‚ or “the Agency”) is interested in researching and developing the possible benefits of nanotechnology‚ EPA also has the
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Chapter 9 The World of Plastics and Polymers Overview • Plastics are all around us – Polymers‚ materials whose molecules consist of long chain of atoms • Natural • Synthetic • Use of material and impact on economy‚ lifestyle‚ and leisure – Word plastic to some carry connotation “cheap” or “tacky” – Synthetic polymers revolutionised modern life • eg plastics become important in automobile industry‚ some new plastics stronger than steel and resist corrosion‚ less dense than structural
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References: Andrievsky‚ G.V. and Burenin‚ I.S. (2001) ‘On medicinal and preventive efficacy of small doses of hydrated C60 fullerenes at cancer pathologies’‚ Chemistry Preprint Archive‚ 2002‚ No. 6‚ June‚ pp.50–65. Aquilanti‚ V.‚ Liuti‚ G.‚ Pirani‚ F. and Vecchiocattivi‚ F. (1989) ‘Orientational and spin–orbital dependence of interatomic forces’‚ J. Chem. Soc.‚ Faraday Trans.
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About Nanotechnology Email | Print Imagine being able to observe the motion of a red blood cell as it moves through your vein‚ or being able to watch as a type of white blood cell (called a "T-cell") destroys an invading microbe by engulfing it. What would it be like to observe the vibration of molecules as the temperature rises in a pan of water? To observe sodium and chlorine atoms as they get close enough to actually transfer electrons and form a salt crystal? New scientific tools‚ developed
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that you have carefully read the descriptors for the highest levels of both criteria A and B and that your essay addresses all aspects of these descriptors. Scientific words you are expected to use: Atom‚ nanometer‚ nanoparticles‚ nanotubes‚ fullerenes‚ catalyst‚ surface area‚ nanocatalyst‚ carbon monoxide‚ carbon dioxide. Assessment Criteria: Criterion Level 0 1 - 2 3 - 4 5 - 6 A: One World The student does not reach a standard described by any of the descriptors. The student states
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A Report of CONTEMPORARY MANAGEMENT ISSUES On Titled “Feedback of Customers towards Nano” Submitted in partial fulfillment for the Award of degree of Master of Business Administration [pic] Maharaja College of Management‚ Udaipur (Affiliated to Rajasthan Technical University‚ Kota) Submitted By: - Ankur Sheokand Submitted To:- Students Name:-Ankur Sheokand Faculty Name:- MBA 2nd sem
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