produced by unburned fuel in the form of oxides of Nitrogen and hydrocarbons. One of the hydrocarbons produced is Carbon monoxide which is one of the most dangerous gases resulting in many health problems sometimes even death. Another cause of air pollution is Nitrogen oxides. Nitrogen oxide is one of the harmful gases‚ it is produced into the atmosphere by burning of fuel. Nitrogen oxide is very dangerous when combined with rain; it forms Nitrogen trioxide which is acid rain. When acidic rains pour
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to acid rain and global warming (NSC‚ 2006). Vehicles emanate three major pollutants: hydrocarbons‚ nitrogen oxides‚ and carbon monoxide. The Coalition for Clean Air (CCA) web site states that hydrocarbons are defined as compounds containing various combinations of hydrogen and carbon atoms. Nitrogen Oxides pertain to compounds of nitric acid‚ nitrogen dioxide‚ and other oxides of nitrogen. They are typically created during combustion processes‚ and are major contributors to smog
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carats(2)) and to asses the gold purity. Nitric acid also reacts powerfully with most of the organic material‚ which may also explode. It reacts with non-metallic elements except for nitrogen‚ oxygen‚ noble gases‚ silicon and halogens. It oxides them to their highest oxidation states(3) as acids with the formation of nitrogen dioxide for concentrated acid and nitric oxide for dilute acid. Chromium (Cr)‚ iron (Fe) and aluminium (Al) dissolve in dilute nitric acid‚ which the concentrated acid forms a metal
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ST XAVIER INTERNATIONAL SCHOOL‚ BHUBANESWAR SUMMATIVE ASSESMENT ---1 SEPTEMBER 2012 CLASS: VIII SUBJECT : BIOLOGY CHAPTER-1 CROP PRODUCTION AND MANAGEMENT EXERCISE 1. Select the correct word from the following list and fill in the blanks. Float‚ water‚ crop‚ nutrients‚ preparation (a) The same kind of plants grow and cultivated on a large scale at a place is called
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other materials. Among the major sources of air pollution are power and heat generation‚ the burning of solid wastes‚ industrial processes‚ and‚ especially‚ transportation. The six major types of air pollutants are carbon monoxide‚ hydrocarbons‚ nitrogen oxides‚ particulates‚ sulfur dioxide‚ and photochemical oxidants. One of the air polution is acid rain. Acid rain is some of the sulfur dioxide gases released as waste products from factories‚ cars‚ and power plants mix with water vapor in the
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GURUKULAM Syllabus for Recruitment Test Category of Post: PGT – Biological Science Part – I GENERAL KNOWLEDGE AND CURRENT AFFAIRS (Marks: 08) Part – II CHILD DEVELOPMENT AND PEDAGOGY (Marks: 08) 1. Development of Child Development‚ Growth & Maturation – Concept & Nature‚ Principles of development‚ Factors influencing Development – Biological‚ Psychological‚ Sociological‚ Dimensions of Development and their interrelationships – Physical & Motor‚ Cognitive‚ Emotional‚ Social‚ Moral‚ Language relating
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of Albizia falcataria (L.) Fosb. NFT ’RR 5:26-28. Evensen‚ C.‚ et al. 1987. Alley cropping experiment no. 3502. TropsoUs Field Research Brief no. 40. Dept. of Agronomy‚ University of Hawaii. Moloney‚ R.A.‚ et al. 1986. The effect of phosphorus and nitrogen applications on the early growth of Adenanthera pavonina‚ Albizia falcataria‚ andSchleinitzias insularum.. NFTRR 4:3-6. NAS. 1979. Tropical Legumes: Resources for the Future. National Academy Press‚ Washington‚ DC. NAS. 1983. Firewood Crops vol.
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|`Subject Area Code |Preliminaries | |Time Allocation | | |Subject Area |Introduction | | | | |Instructional Hours (min) |
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Jarrett Sears Dr. Hummel Chem 121 2/7/13 A Chemical Reaction between Tin and Nitric Acid Introduction: Finding the products made from the components of tin metal and nitric acid is the ultimate objective of this lab; the formula of the products will be found in the CRC handbook thereafter. Procedure: First‚ obtain a clean crucible‚ and heat it under a Bunsen burner until it is as hot as possible‚ about 15 minutes within a fume hood unit. The Bunsen burner will be used under the fume
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Chemistry Assignment Name : Lorna Ng Xin Mei Student ID : 1000620 Group Members’ Name: Sim Koshin Chen Chui Ting Bhindia Pooja Rayel Title : Paper Chromatography Photochemical Smog Lecturer’s Name : Ms. Usha Nanthini Table of Content No. | Content | page | 1. | Paper Chromatography | | | 1.1 Definition | | | 1.2 Background | | | 1.3 Rf Values | | | 1.4 Principles of Paper Chromatography | | | 1.5 Procedure
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