characteristic odors and flavors of fruit and flowers is the ester. Although the ester composes most of the scents it is not totally responsible for all scents. Beside the ester functional group an essential oil can also possess complex mixtures of hydrocarbons‚ alcohols‚ and carbonyl groups. These compounds usually belong to one of two groups of natural products called terpenes or phenylpropanoids. Investigation of the essential oils in the nineteenth century found that many of the pleasant odors we
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Cytotoxic and Genotoxic Effects of Gutkha using Allium cepa Assay EKTA BHATTACHARYA Roll BGC/BOT No. 112001 M.Sc Semester IV Examination 2013 Under the supervision of Dr. Shyamal Kr. Chakraborty Associate Professor‚ Cytogenetics Laboratory‚ PG Dept of Botany‚ Barasat Government College Cytotoxic And Genotoxic Effects of Gutkha using Allium cepa Assay EKTA BHATTACHARYA Roll BGC/BOT No. 112001 M.Sc Semester
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acid and sulfuric acid. The percent yield from the experiment was 54.4% of the product‚ and the melting point of the possible results were 59 °C for 1-nitronaphthalene‚ and 78°C for 2-nitronaphthalene. Introduction: Polynuclear aromatic hydrocarbons such as naphthalene can be nitrated by the same methods as benzene derivatives‚ including the well-known “mixed acid” method that utilizes a mixture of nitric acid and sulfuric acid. The electrophile is the nitronium ion‚ NO2+‚ which is formed
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example of an i. Alkane Butane C4H10 ii. Alkene Ethene C2H4 iii. Cycloalkane Cyclohexane C6H12 iv. Alcohol Ethanol C2H5OH v. Ether Methoxy methane CH3OCH3 9. What does an aromatic compound contain? Note all other compounds are aliphatic A benzene ring 10. Give examples of all 3 types of structural isomerism i. Chain
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dye decolorization Project supervisor: Dr. R. Masalu Lab scientist: Mr. Chuwa INTRODUCTION: Due to rapid industrialization and urbanization‚ a lot of chemicals including dyes are manufactured and used in day-to-day life. Dyes are synthetic and aromatic molecular structural compounds. According to their dissociation in an aqueous solution‚ dyes can be classified as acid‚ direct reactive dyes (anionic)‚ basic dyes (cationic) and disperse dyes (nonionic). They are used on several substrates in food
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UniKL MICET TRANSFER DEGREE PROGRAM 1ST YEAR CHEMICAL ENGINEERING TECHNOLOGY Summary of Units (Modules) Module Subjects Credits Semester Offered CPE 1002 Chemical Engineering Design Chemical Process Principles 1 3 1 Chemical Process Principles 2 3 2 Engineering Design 3 2 CPE 1003 Fluid Mechanics and Thermodynamics Fluid Mechanics 3 2 Chemical Engineering Thermodynamics 3 2 CPE 1004 Chemical Engineering Science Physical Chemistry 3 1 Chemical
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Oil from Jackfruit Seeds In partial fulfillment of the requirement Research Submitted To: Mrs. Linda Mahomoc Submitted By: Lucy Mae R. Mendoza Chapter I Introduction Background of the Study Oil is a smooth‚ thick liquid that is used as a fuel and for making the parts of machines move smoothly. Oil is found underground. Oil has many uses. It helps the machines to work like vehicles‚ agricultural equipment and generators. Oil price hike is the
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Air pollution is the introduction of chemicals‚ particulates‚ biological materials‚ or other harmful materials into the Earth’s atmosphere‚ possibly causing disease‚ death to humans‚ damage to other living organisms such as food crops‚ or the natural or built environment. The atmosphere is a complex natural gaseous system that is essential to support life on planet Earth. Stratospheric ozone depletion due to air pollution has long been recognized as a threat to human health as well as to the Earth’s
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size from several hundred tons‚ designed for servicing small harbours and coastal settlements‚ to several hundred thousand tons‚ with these being designed for long-range haulage. A wide range of products are carried by tankers‚ including: * hydrocarbon products such as oil‚ LPG‚ and LNG * Chemicals‚ such as ammonia‚ chlorine‚ and styrene monomer * fresh water * wine Different products require different handling and transport‚ thus special types of tankers have been built‚ such as
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Title: Production of pest repellent using Pandan leaves (Pandanus amaryllifolius) extract against Home Cockroach Research proposal Researchers: Bombita‚ Mark Jairus Horigome‚ Jojie Florague‚ Joana Liza Realista‚ Joy Adviser: Olive B. Blanco Julia Ortiz Luis National High School Sagaba Sto. Domingo Nueva Ecija 2012-2013 INTRODUCTION Background of the Study Any home can have cockroaches. They are scavengers and a health hazard. While walking on spoiled food in garbage containers
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