West Bengal Council of Higher Secondary Education VidYasagar Bhavan No : DS(A)SD 9/2‚ Block lPvBl 861 42l2oL3 DJ‚ Sector-ll‚ Salt Lake‚ Kolkata - 91 Date :09.07.2013 NOTIFICATION Attn: All Heads of Higher Secondary lnstitutions has already This is to notify that west Bengal council of Higher secondary Education published the following Text Books : 1. 2. Blackswan English A & B for Class Xl and Xll - printed & distributed by Orient by Bengali A for Class Xl and Bengali
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Apprentice! Over the course of the semester your company‚ Flavour Fusion‚ will be responsible for exporting a new line of non-alcoholic beverages from Canada to a country outside of North America. You are planning to pitch the new line of beverage and the country you would like to sell it to at the semi-annual International Beverage Fair that your CEO (Mrs. O’Donnell) will be hosting. Your CEO‚ along with the employees of Flavour Fusion will be voting to select the winning beverage to export and
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Enzyme Lab Experiments Problem: How can we demonstrate how enzymes work? What happens if we alter the environment of an enzyme? Materials: G;lucose Test Strips Test Tubes Pipettes Raw Hamburg Lettuce Potato Raw Liver Chalk Beakers Dairy Lactose Tablet Water Sugar Solo Cups Hot Plate Knife Gloves Skim Milk Glow Sticks Peroxide Hypothesis: 1. If we change the environment via temperature the glow stick will Its intensity will change 2. If hydrogen peroxide is added to a certain food liver
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| | Kinetics Author: Katie Wood Instructor: Donald Kavanagh Chem 106b‚ Section 001 Lab Performed 8th‚ 2012 Lab Report Submitted February 22nd‚ 2012 Abstract The purpose of the lab was to determine the order of reaction for the dye Red #40. By measuring the reaction rate between bleach and the dye‚ the order of the reaction was determined to be first order. Introduction The study of kinetics is important for studying the amount of time it takes for a particular reaction to reach
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9/23/12 Lab Report #1 Meter Reading Summary The objective of this experiment was to learn how to read different meters like the D.C. volt meter and the D.C. amperes meter. In all meters each big line is a major division and each little line in between is a minor division‚ and if there is a line smaller than the minor division lines then that would be a sub minor division. Each meter has a low‚ medium‚ and high range. For example on the D.C. volt meter the ranges go from top to bottom 150‚ 15‚
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What is Photosynthesis? Its general reference is sunlight protons converted into resourceful energy‚ of which are autotrophs that work and feed themselves independently. To be more scientific using its equation 6CO2 + 6H2O – Sunlight Energy – C6H12O6 + 6H2O‚ carbon dioxide particles travel through a leaf’s cell surface‚ which is where the chloroplast organelle produces “chlorophyll molecules forming a light harvesting complex absorbing that energy‚ exciting electrons” ((n.d.). Retrieved March 22
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effects of above ground and underground by exposing the mealworms to minimal amounts of light in one of the containers (underground)‚ and placing the other container under a lamp (above ground). A beaker of water was utilized as a heat sink to prevent the variable of heat from tampering with the variable being tested. Twenty five-minute interval trials were conducted in total.
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Lab Report Diffusion is - One of two kinds of passive transport‚ - Diffusion can transport ions from higher concentration to lower concentration region without any other forces. - A net movement of molecules in and out of cell membrane - Diffusion can be affected by the steepness of the concentration gradient. Lab question: Is the rate of diffusion influenced by the presence of second molecule? Prediction: the rate of diffusion is influenced by the presence of second molecule
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high as it could have been. Achieving an efficiency that is as high as possible is important to maximise the amount of energy transferred into the water (or alternate substance which the temperature difference is being measured)‚ meaning that less heat escapes. While the hood worked well‚ there are several ways it could be improved. Firstly‚ would be to have the bottom of the hood lower down‚ so it completely covered the top of the shrowd meaning more of the hot air which rises will be pushed up
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the propanone had evaporated leaving behind crystals of pure paracetamol. Next you need to heat the crude paracetamol in a Thiele tube by filling the tube up with paraffin oil to the point where it just covers the entrance to the elbow tube. Then collect the paracetamol in a capillary tube and attach this to a thermometer using an elastic band. Keep an eye on your elastic band as it can snap under the heat. We made sure that the Thiele tube was filled to the accurate point and the capillary tube
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