` CHEMISTRY PROJECT ON PRESENCE OF INSECTICIDES IN FRUITS AND VEGETABLES A PROJECT REPORT Submitted by VAISHAKH MURALEEDHARAN Class: XII-A JANUARY 2015 DEPARTMENT OF CHEMISTRY SHANTINIKETAN INDIAN SCHOOL DOHA-QATAR SHANTINIKETAN INDIAN SCHOOL‚ DOHA – QATAR Affiliated to the Central Board of Secondary Education‚ Delhi. Approved by the Ministry of Education‚ State of Qatar. BONAFIDE CERTIFICATE This is to certify that this project report entitled “CHEMISTRY PROJECT ON” PRESENCE
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Quantitative Determination of Gravimetric Analysis Ophelia Low Gek Suan 1311907DBT/FT/1A/01 | SYNOPSIS By gravimetric analysis‚ we are able to determine the amount of sulphate in barium sulphate quantitatively. We can do so by slowly adding dilute barium sulphate to an unknown sulphate solution that has been heated and acidified with concentrated hydrochloric acid slightly. A white precipitate will be yield from filtering the solution
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the mot water after 24 hours. Apparatus/Materials: Three Conical Flasks‚ Three Filter Funnels‚ Cotton Balls‚ Measuring Cylinder‚ Loam Soil‚ 225ml of Water‚ Paper‚ Pencil Methods/Procedures: Obtain and clean out three conical flasks. Label each flask Sand‚ Loam and Clay. Plug three funnels with cotton balls and place one in each flask. Place 20g of each soil in respected filter funnels. Measure and pour 75ml of water into each flask. Record
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Amount of antioxidants in three green tea samples Aim: To compare the amount of antioxidants in three green tea samples and hence recommend a brand of green tea bag contains a higher antioxidants content to the public. Introduction Problem to investigate: Amount of antioxidants in three green tea samples Hypothesis: It is the antioxidants like catechins‚ a form of flavonoids‚ present in the green tea to cause the DCPIP solution to change from blue to colourless. Prediction: The DCPIP solution
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a Precipitation Reaction NOTE: All photos should be taken so the reading on the electronic balance is readable. Photo 1: filter paper being weighed on electronic balance‚ along with your student information card. Photo 2: beaker with precipitate slurry in it (after step 5) ‚ along with your student information card Photo 3: dried precipitate/filter paper being weighed on electronic balance‚ along with your student information card Additional Question Guidelines: Include the answers
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OUTLINE. Introduction to the Question: -A subclass of pheromones is necromones‚ which contain oleic acid as a primary component. -Some pheromones trigger aggregation between organisms‚ others can trigger separation. -Necromones trigger necrophoric (organisms remove their dead) or necrophobic (organisms avoid their dead) behavior. -Arthropods use pheromones‚ this includes sowbugs and cockroaches. Chemical signals are picked up by antennae. II. Hypothesis: When given a choice between two identical
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High Dynamic Carrier Tracking Using Kalman Filter Aided Phase-Lock Loop Weibin Li†‚‡‚ Shanjian Liu†‚‡‚ Chunhui Zhou‡‚ Shidong Zhou‡‚ Tingchang Wang† † Institute of Communication Engineering PLAUST Nanjing P‚ R China Email: liwb@wireless.mdc.tsinghua.edu.cn Abstract—Tracking dynamics on the GPS signal is still a big challenge to the receiver designer as the operating conditions are becoming more volatile. Usually‚ the Phase-locked loop (PLL) is used in GPS receivers to track
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reaching just below boiling point‚ decolorizing carbon was added to the solution‚ and the solution was allowed cooled for 2-3 minutes. The dark black solution was filtered through a gravity filtration system‚ leaving dark residue behind on the filter paper‚ and colorless to slightly pink liquid in the beaker. Then‚ 9 mL of sodium acetate buffer‚ to maintain a relatively constant pH and 1.8 mL of acetic anhydride were added to the solution‚ and then it was mixed and heated for about 5 minutes. Then
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Lab 10 Low Pass and High Pass Filters Objective To study the behavior of RC and RL circuits when they are connected to AC power supply. Material Function generator‚ resistor‚ capacitor‚ inductor‚ wires‚ breadboard‚ oscilloscope Procedure RC Low Pass Filter We use a 10KΩ resistor and a 0.01μF capacitor in a series and prepare a function generator and a oscilloscope. Next‚ we measure the each voltage by changing the frequency (Start from 10‚ 20‚30‚50‚70Hz). The measurement repeats
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Multiband Bandpass Filter using Multimode Resonator Bachelor of Engineering (Electrical and Electronic Engineering) Project Supervisor: Sie King Ting Student: Mohammad Faizan Suleman (4215400) DECLARATION I hereby declare that this report entitled “Multiband Bandpass Filter using Multimode Resonator” is the outcome of my own project work apart from quotations and citations which have been properly acknowledged. I also state that earlier it has not been or concurrently submitted for
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