GENERAL CERTIFICATE OF SECONDARY EDUCATION GATEWAY SCIENCE ADDITIONAL SCIENCE B Unit 1 Modules B3 C3 P3 FOUNDATION TIER THURSDAY 14 JUNE 2007 Calculators may be used. Additional materials: Pencil Ruler (cm/mm) F B623/01 *CUP/T30055* Afternoon Time: 1 hour INSTRUCTIONS TO CANDIDATES • • • • • • • Write your name‚ Centre Number and Candidate Number in the boxes above. Answer all the questions. Use blue or black ink. Pencil may be used for graphs and diagrams only. Read each question
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STEAM TURBINES A steam turbine is a prime mover which converts heat energy into mechanical energy. In a conventional steam turbines cycle‚ water is used as the working fluid. The water is heated in a boiler by burning fuel. It evaporates into steam which is expanded in a turbine where mechanical power is generated. The steam generated is of high temperature and high pressure. The temperature is often in the 450 to 540 degrees centigrade range. The pressure ranges between 60 and 120 bar. The
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The Madness of King George begins at the end 1788 when King George III’s sanity began to be questioned. The film documents the struggles surrounding the politics and relationships within the Royal Family during King George III’s battle with mental illness. The movie ends only six months later in April of 1789 when King George III is found fit for duty and returns to his regular routine. Despite several historical inaccuracies‚ The Madness of King George accurately displays the hardships associated
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DISCOVERY) Year Discovered ANTIQUITY ANTIQUITY -5000 -3000 -3000 -2500 -2100 -1600 -1000 -1000 1250 1374 1500 1669 1700 1735 1751 1755 1766 1772 1774 1774 1774 Element Name Carbon Sulfur Copper Silver Gold Iron Tin Antimony Mercury Lead Arsenic Zinc Bismuth Phosphorus Platinum Cobald Nickel Magnesium Hydrogen Nitrogen Oxygen Chlorine Manganese Element Symbol
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in a two - step process displayed in figure 1.9. The first stage is the esterification of Terephthalic acid (PTA) with Ethylene glycol (EG) carried out in a succession of polymerisation reactors conventionally stirred tank batch reactors and using antimony (III) oxide catalyst. The solid PTA is mixed with an ethylene glycol. The paste formed is then fed into the primary esterification reactor (PE1) which operates at 7 bar and 270°C‚ vapour from the reactor is rectified via a multi-stage distillation
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Materials in Our Daily Life : 95 : 21 Materials in Our Daily Life The basic aim of science is not only to study and understand natural phenomena but also to use this knowledge to make our lives more comfortable. Science and technology have enabled us to develop more economical and convenient methods to recover useful materials from nature and to put them to various uses. Chemistry has enabled us to synthesize new materials which have desired properties‚ thus‚ making them even better than natural
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The Lycurgus Cup – A Roman Nanotechnology Ian Freestone1‚ Nigel Meeks2‚ Margaret Sax2 and Catherine Higgitt2 Cardiff School of History and Archaeology‚ Cardiff University‚ Cardiff CF10 3EU‚ Wales UK 2 Department of Conservation‚ Documentation and Science‚ The British Museum‚ London WC1B 3DG‚ UK 1 Introduction The Lycurgus Cup (fig 1) represents one of the outstanding achievements of the ancient glass industry. This late Roman cut glass vessel is extraordinary in several respects‚ firstly in
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ENVIRONMENT -COPY OFNOTIFICATION Dated 24th September‚ 2008 Whereas the draft rules‚ namely‚ the Hazardous Material (Management‚ Handling and Transboundary Movement) Rules 2007 was published by the Government of India in the Ministry of Environment and Forest vide number S.O.1676(E)‚ dated 28th September‚ 2007 in the Gazette of India‚ Extraordinary of the same date inviting objection and suggestions from all persons likely to be affected thereby‚ before the expiry of the period of sixty days from
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THIS IS A LEGACY SPECIFICATION H Thursday 26 January 2012 – Morning GCSE GATEWAY SCIENCE ADDITIONAL SCIENCE B B623/02 Unit 1 Modules B3 C3 P3 (Higher Tier) * B 6 2 0 7 6 0 1 1 2 * Candidates answer on the Question Paper. A calculator may be used for this paper. Duration: 1 hour OCR supplied materials: None Other materials required: • Pencil • Ruler (cm/mm) * B 6 2 3 0 2 * INSTRUCTIONS TO CANDIDATES • • • • • • Write your name‚ centre number
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w w ap eP m e tr .X w om .c s er UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education *9505164189* 0653/03 COMBINED SCIENCE May/June 2007 Paper 3 (Extended) 1 hour 15 minutes Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number‚ candidate number and name on all the work you hand in. Write in dark blue or black pen
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