Exploration Research Question What is the effect of different concentrations of sucrose in a solution on the mass and surface area of a beetroot (Beta Vulgaris) piece? Background The membrane consists of a phospholipid bilayer which is semi permeable. Osmosis is the passive movement of water molecules from an area of high water potential to an area of low water potential across a semi-permeable membrane. It is easy for water molecules to pass through this membrane however solutes that are big in
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temperature. The network of hydrogen atoms links all the water molecules together which makes it much more difficult to escape. This property gives the water cohesiveness. A drop of water on a polished surface stays intact and hardly wets the surface however a drop of alcohol on the same surface just spreads across it. Relating to the theme the importance of this aspect is to
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Sample Question Paper 349 Sample Question Paper Mathematics (211) Time : 3 Hours Maximum Marks : 100 Note : 1. Question Numbers (1–16) are Multiple Choice Questions. Each question carries one mark. For each question‚ four alternative choices are given‚ of which only one is correct. You have to select the correct alternative and indicate it in the box provided against each question by writing A‚ B‚ C or D as the case may be. 2. Question Numbers (17–26) carry 3 marks each. 3. Question
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NATIONAL SENIOR CERTIFICATE GRADE 12 MATHEMATICAL LITERACY P1 NOVEMBER 2011 MARKS: 150 TIME: 3 hours This question paper consists of 15 pages and 1 annexure. Copyright reserved Please turn over Mathematical Literacy/P1 2 NSC DBE/November 2011 INSTRUCTIONS AND INFORMATION 1. 2. This question paper consists of SIX questions. Answer ALL the questions. Answer QUESTION 6.1.3 and QUESTION 6.1.4 on the attached ANNEXURE. Write your centre number and examination number in the
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is concentrated sulfuric acid but‚ sulfurtrioxide‚ chlorosulfonic acid‚ metallic sulfates‚ and sulfamic acid are also occasionally used. The name sulficants comes from these molecules moving to the surface of a liquid or to an interface between two liquids and changing the properties of the surface. However‚ the nature and properties of sulfuric acid‚ makes it desirable to use it for nucleophilic substitutions whenever possible. For each substance being suflinated‚ there is a critical concentration
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Industrial Training Report Report on Summer Industrial Training at Heavy Engineering Division (HED) of Larsen & Toubro Limited‚ Powai Works Prepared by Subhrajit Bhattacharya Undergraduate Student‚ Indian Institute of Technology‚ Kharagpur Roll no.: 02ME1041 Under the Guidance of Mr. N. R. Raykar Senior Manager‚ FPEX‚ HED‚ L&T Powai Works Industrial Training Report Page 2 of 47 Certificate This is to certify that Subhrajit Bhattacharya‚ form IIT Kharagpur‚ has undergone
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Introduction The secret to a good bubble is something called surface tension‚ an invisible bond that holds water molecules together. Water is a polar molecule‚ so it has plus and minus ends just like magnets that attract each other. When the water molecules align with each other they stick together‚ creating surface tension. You might think that it is the surface tension of the water that holds the skin of a bubble together. Actually‚ the surface tension of water is too strong to make a bubble. You can
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Visit us at : http://www. agyatgupta.com; Email:agyat99@gmail.com Visit us at : http://www. agyatgupta.com; Email:agyat99@gmail.com the AP is (a) 3 (b) -3 (c) 4 (d) -9 Ans d Q.3 Distance of point (1‚2)‚ from the mid point of the line segment joining the points (6‚8) and (2‚4) is (a)4 units (b) 3 units (c) 2 units (d) 5 units Ans d Q.4 :GENERAL INSTRUCTIONS :1. All questions are compulsory. 2. The question paper consists of 34 questions divided into four sections A‚B‚C and D. Section – A comprises
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Resources How much water is needed? How much water is available? How are the requirements satisfied by the supplies? How is the used-up water disposed? Demand for Water Supply Withdrawal uses Nonwithdrawal uses Consumptive uses Involve diversion of surface water or groundwater from its sources Involve on-site uses Involve portion of withdrawn quantity which is used by crop Municipal requirements Water requirement category Large industrial requirements Waste dilution requirements Municipal Requirements
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break down the surface tension of the water. These surfactants work on the surface of the water droplet to reduce its tendency to bead up by pulling the water and the wax on the leaf surface together‚ reducing the water’s surface tension and causing the water droplet to spread out. When the water used in pesticide sprays spreads out more evenly‚ the result is much better pesticide coverage. Adding APSA-80 helps insecticides‚ defoliators and foliar fertilisers to penetrate the surface of the leaf faster
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